Find an in-network doctor from over 1,000 insurance plans

Add your insurance to see in-network doctors
insurance link for 300
insurance link for 307
insurance link for 323
insurance link for 356
insurance link for 324
See all (1,000+)
315 verified Aetna Doctors in South Gate, CA
Zocdoc verifies all providers before they can appear in Zocdoc search results. Every provider that appears in search is open to new patients.
In-network providersInsurance logo
Availability last updated 05/01/2026
Availability last updated 05/01/2026
Physician Assistant (Allergy) (Virtual)
3.74
·19 reviews
Easy and efficient! - Jan 12, 2024 by Diana F.Click to read more
Burbank, CA
In-network · Aetna
Accepting new patients · Offers video visits ·
Read bio
Ms. Kayla Hopkins is a dedicated physician assistant practicing in various locations, including Spillertown, IL; Merritt Island, FL; Smyrna, NY; Broaddus, TX; Burbank, CA; and Empire, NV. Ms. Hopkins sees patients at HeyAllergy for a variety of health concerns. Her patients trust her for annual phy...Click to read more
Physician Assistant (Allergy) (Virtual)
3.83
·6 reviews
Awesome experience with the visit. After applying the instruction and medicines from the Dr, my symptoms are significantly improved. Really appreciate the doctor.Click to read more
Burbank, CA
In-network · Aetna
Accepting new patients · Offers video visits ·
Read bio
This provider's Primary Supervising Physician is Krikor Manoukian. Gayaneh, a California Board-Certified Physician Assistant (PA), holds a Master's in Physician Assistant Studies from Western University of Health Sciences in Pomona and a bachelor's degree in Molecular, Cellular, and Developmental B...Click to read more
Internist
4.48
·137 reviews
It was a nice visit with Dr Madrid, i recommend.. - Oct 6, 2019 by Myra F.Click to read more
15.5 mi · 2701 W Alameda Ave, # 500, Burbank, CA 91505
In-network · Aetna
Also offers video visits · Accepting new patients · 25+ years of experience · Expertise in high cholesterol + 3 more ·
Read bio
Dr. Cecelia T. Madrid has worked in private practice for more than thirty years in the Burbank medical community. Prior to her current private practice, she worked for the largest physician-owned healthcare network in Southern California. She earned her Doctor of Medicine from the University of Min...Click to read more
Internist (Virtual)
4.48
·137 reviews
It was a nice visit with Dr Madrid, i recommend.. - Oct 6, 2019 by Myra F.Click to read more
Burbank, CA
In-network · Aetna
Accepting new patients · 25+ years of experience · Offers video visits · Expertise in high cholesterol + 3 more ·
Read bio
Dr. Cecelia T. Madrid has worked in private practice for more than thirty years in the Burbank medical community. Prior to her current private practice, she worked for the largest physician-owned healthcare network in Southern California. She earned her Doctor of Medicine from the University of Min...Click to read more
Internist (Virtual)
4.48
·137 reviews
It was a nice visit with Dr Madrid, i recommend.. - Oct 6, 2019 by Myra F.Click to read more
Burbank, CA
In-network · Aetna
Accepting new patients · 25+ years of experience · Offers video visits · Expertise in high cholesterol + 3 more ·
Read bio
Dr. Cecelia T. Madrid has worked in private practice for more than thirty years in the Burbank medical community. Prior to her current private practice, she worked for the largest physician-owned healthcare network in Southern California. She earned her Doctor of Medicine from the University of Min...Click to read more
Physician Assistant
4.87
·399 reviews
Dr Nguyen was very patient with what I’m there for - Sep 6, 2024 by Kristine T.Click to read more
16 mi · 289 W. Huntington Drive, Suite 309, Arcadia, CA 91007
In-network · Aetna
Also offers video visits · Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
A dedicated physician assistant, Ms. Diana Nguyen currently offers her services at Cure Medical Care. She welcomes patients from all communities and backgrounds in Arcadia, CA, and also takes virtual appointments. Ms. Nguyen earned her master's degree in physician assistant studies from Western U...Click to read more
Internist
16 mi · 1366 W 7th St, San Pedro, CA 90732
In-network · Aetna
Also offers video visits · Accepting new patients · Expertise in pneumonia + 9 more ·
Read bio
Dr. Thayer is a board-certified internist who earned his Doctor of Osteopathic Medicine from Midwestern University, Arizona College of Osteopathic Medicine. He completed his residency at Creighton University. Before his medical career, he served in the United States Air Force as an electronic warfar...Click to read more
Internist (Virtual)
San Pedro, CA
In-network · Aetna
Accepting new patients · Offers video visits · Expertise in pneumonia + 9 more ·
Read bio
Dr. Thayer is a board-certified internist who earned his Doctor of Osteopathic Medicine from Midwestern University, Arizona College of Osteopathic Medicine. He completed his residency at Creighton University. Before his medical career, he served in the United States Air Force as an electronic warfar...Click to read more
Internist
16 mi · 1366 W 7th St, San Pedro, CA 90732
In-network · Aetna
Also offers video visits · Accepting new patients · Expertise in chronic high blood pressure + 4 more ·
Read bio
Dr Sharon Genato is board certified in Internal Medicine. She earned her medical degree from the University of the East College of Medicine in the Philippines. She completed her internship at the Atlantic City Medical Center in the New Jersey and her residency at the Montefiore Medical Center, the U...Click to read more
Internist (Virtual)
San Pedro, CA
In-network · Aetna
Accepting new patients · 25+ years of experience · Offers video visits · Expertise in high cholesterol + 3 more ·
Read bio
Dr. Vargas is a board-certified internist with 26 years of experience and a strong background in cardiology. She earned her Doctor of Medicine from the University of California, Irvine. Skilled at treating acute and chronic conditions for seniors, she places a strong focus on education and lifestyle...Click to read more
Internist (Virtual)
San Pedro, CA
In-network · Aetna
Accepting new patients · Offers video visits · Expertise in chronic high blood pressure + 4 more ·
Read bio
Dr Sharon Genato is board certified in Internal Medicine. She earned her medical degree from the University of the East College of Medicine in the Philippines. She completed her internship at the Atlantic City Medical Center in the New Jersey and her residency at the Montefiore Medical Center, the U...Click to read more
Family Physician (Virtual)
San Pedro, CA
In-network · Aetna
Accepting new patients · Offers video visits · Expertise in upper respiratory infection (uri) + 3 more ·
Read bio
Dr. Paul Sliskovich is a board-certified family medicine physician. He earned his undergraduate degree from the University of Southern California and his Doctor of Medicine from Creighton University in Omaha, Nebraska. He also completed his residency in Family Medicine at Creighton University.Click to read more
Family Physician
16 mi · 1366 W 7th St, San Pedro, CA 90732
In-network · Aetna
Also offers video visits · Accepting new patients · Expertise in chronic diabetes + 2 more ·
Read bio
Dr. Lilia Prado is a board-certified family medicine physician with over 30 years of experience providing medical care to patients of all ages. She is a graduate of the University of Texas at El Paso and earned her Doctor of Osteopathic Medicine from the University of North Texas. Dr. Prado is bilin...Click to read more
Internist
16 mi · 1366 W 7th St, San Pedro, CA 90732
In-network · Aetna
Also offers video visits · Accepting new patients · 25+ years of experience · Expertise in high cholesterol + 3 more ·
Read bio
Dr. Vargas is a board-certified internist with 26 years of experience and a strong background in cardiology. She earned her Doctor of Medicine from the University of California, Irvine. Skilled at treating acute and chronic conditions for seniors, she places a strong focus on education and lifestyle...Click to read more
Family Physician (Virtual)
San Pedro, CA
In-network · Aetna
Accepting new patients · Offers video visits · Expertise in chronic diabetes + 2 more ·
Read bio
Dr. Lilia Prado is a board-certified family medicine physician with over 30 years of experience providing medical care to patients of all ages. She is a graduate of the University of Texas at El Paso and earned her Doctor of Osteopathic Medicine from the University of North Texas. Dr. Prado is bilin...Click to read more
Family Physician
16 mi · 1366 W 7th St, San Pedro, CA 90732
In-network · Aetna
Also offers video visits · Accepting new patients · Expertise in upper respiratory infection (uri) + 3 more ·
Read bio
Dr. Paul Sliskovich is a board-certified family medicine physician. He earned his undergraduate degree from the University of Southern California and his Doctor of Medicine from Creighton University in Omaha, Nebraska. He also completed his residency in Family Medicine at Creighton University.Click to read more
Family Physician (Virtual)
4.62
·97 reviews
Very understanding and respectfull excellent care. by NKClick to read more
Seal Beach, CA
In-network · Aetna
Accepting new patients · Offers video visits ·
Read bio
Dr. James Pearson completed his medical residency training at the University of Southern California's CVVP Health system and completed a subsequent fellowship at the University of California Irvine. He has continued his professional training at the American Board of Aesthetic Medicine and practices...Click to read more
Internist
16 mi · 1600 S Gaffey St, San Pedro, CA 90731
In-network · Aetna
Also offers video visits · Accepting new patients · Expertise in pneumonia + 9 more ·
Read bio
Dr. Thayer is a board-certified internist who earned his Doctor of Osteopathic Medicine from Midwestern University, Arizona College of Osteopathic Medicine. He completed his residency at Creighton University. Before his medical career, he served in the United States Air Force as an electronic warfar...Click to read more
Internist
16 mi · 1600 S Gaffey St, San Pedro, CA 90731
In-network · Aetna
Also offers video visits · Accepting new patients · Expertise in chronic high blood pressure + 4 more ·
Read bio
Dr Sharon Genato is board certified in Internal Medicine. She earned her medical degree from the University of the East College of Medicine in the Philippines. She completed her internship at the Atlantic City Medical Center in the New Jersey and her residency at the Montefiore Medical Center, the U...Click to read more
Family Physician
16 mi · 1600 S Gaffey St, San Pedro, CA 90731
In-network · Aetna
Also offers video visits · Accepting new patients · Expertise in chronic diabetes + 2 more ·
Read bio
Dr. Lilia Prado is a board-certified family medicine physician with over 30 years of experience providing medical care to patients of all ages. She is a graduate of the University of Texas at El Paso and earned her Doctor of Osteopathic Medicine from the University of North Texas. Dr. Prado is bilin...Click to read more
Internist
16 mi · 1600 S Gaffey St, San Pedro, CA 90731
In-network · Aetna
Also offers video visits · Accepting new patients · 25+ years of experience · Expertise in high cholesterol + 3 more ·
Read bio
Dr. Vargas is a board-certified internist with 26 years of experience and a strong background in cardiology. She earned her Doctor of Medicine from the University of California, Irvine. Skilled at treating acute and chronic conditions for seniors, she places a strong focus on education and lifestyle...Click to read more
Family Physician
16 mi · 1600 S Gaffey St, San Pedro, CA 90731
In-network · Aetna
Also offers video visits · Accepting new patients · Expertise in upper respiratory infection (uri) + 3 more ·
Read bio
Dr. Paul Sliskovich is a board-certified family medicine physician. He earned his undergraduate degree from the University of Southern California and his Doctor of Medicine from Creighton University in Omaha, Nebraska. He also completed his residency in Family Medicine at Creighton University.Click to read more
Internist
3.94
·54 reviews
The staff and Dr. Luisana were very nice, intelligent and provide fast and efficient service. - May 23, 2017 by Mario C.Click to read more
16.5 mi · 2595 E Washington Blvd, Ste 106, Pasadena, CA 91107
In-network · Aetna
Accepting new patients · 25+ years of experience · Expertise in fibromyalgia and chronic pain and fatigue + 7 more ·
Read bio
Dr. Ramachandran Srinivasan, MD, FACR, completed his Medical Diploma/M.B.B.S. (Bachelor of Medicine, Bachelor of Surgery) at Andhra Medical College, India. He completed his internship at Lakewood Hospital, Ohio. He then finished his Internal Medicine Residency at Veterans Affairs Los Angeles Healthc...Click to read more
Primary Care Doctor (Virtual)
4.84
·472 reviews
Very understanding and fast with office visit! Knowledgeable about internal medicineClick to read more
Fountain Valley, CA
In-network · Aetna
Accepting new patients · 25+ years of experience · Offers video visits · Highly recommended · Excellent wait time · Expertise in sepsis + 3 more ·
Read bio
Dr. Wasim Raja is a skilled and experienced internist. He currently runs his own practice, based in Fountain Valley, CA, and holds licenses to practice in Texas, Nebraska, and Colorado. Fluency in English, Urdu, and Punjabi has made him accessible to various culturally diverse communities. Dr. Raj...Click to read more
Primary Care Doctor
4.87
·46 reviews
Dr Panchal was incredibly kind, thoughtful, and patient. I felt seen & heard by her. I was nervous coming into my appointment, but after some time with her I felt a lot more comfortable. Upon arrival, I was greeted by her friendly front-desk staff. The nurse was incredibly sweet too. She even helped...Click to read more
23.5 mi · 253 S. Diamond Bar Blvd, Diamond Bar, CA 91765
In-network · Aetna
Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
I am excited to be back in my hometown of Diamond Bar to serve my community as your doctor! As your physician, I will partner with you to help optimize your health. My goal is to work with you using different evidence-based modalities to manage and, more importantly, prevent chronic diseases. I s...Click to read more
Primary Care Doctor
5.00
·30 reviews
23.5 mi · 253 S. Diamond Bar Blvd, Diamond Bar, CA 91765
In-network · Aetna
Accepting new patients · Highly recommended · Expertise in chronic high blood pressure + 6 more ·
Read bio
Dr. Kim Tran is a board-certified Family Medicine physician. After graduating from University of California, Irvine in 2011, she went on to complete medical school at Lake Erie College of Osteopathic Medicine in Erie, PA and residency training at Sisters of Charity Hospital in Buffalo, NY, where she...Click to read more
Primary Care Doctor
4.94
·52 reviews
I have been looking for a PCP in the area for some time, but my search has ended. The office was efficiently run. In fact, I was called back for my appointment while I was still filling out my paperwork. I will be returning for any needs I have in the future. - Nov 23, 2024 by Nuvi N.Click to read more
23.5 mi · 253 S. Diamond Bar Blvd, Diamond Bar, CA 91765
In-network · Aetna
Accepting new patients · Highly recommended · Excellent wait time · Expertise in lower back pain + 5 more ·
Read bio
I am committed to providing comprehensive health care for you and your family, working to achieve optimal health through a healthy lifestyle and disease prevention. I believe in caring for you when you are both sick and well. I earned my Doctor of Osteopathic Medicine degree from Rowan University an...Click to read more
Primary Care Doctor
4.60
·30 reviews
23.5 mi · 253 S. Diamond Bar Blvd, Diamond Bar, CA 91765
In-network · Aetna
Accepting new patients · Highly recommended ·
Read bio
Dr. Lilian Li is a family medicine physician with St. Jude Heritage Medical Group practicing in Diamond Bar, CA.Click to read more
Primary Care Doctor
23.5 mi · 845 W La Veta Ave, Orange, CA 92868
In-network · Aetna
Accepting new patients · Expertise in chronic high blood pressure + 1 more ·
Read bio
Dr. Jenny Wang is a boardcertified family medicine physician who has been in practice at community health centers dedicated to helping underserved populations and promoting health equity. She has relocated to Orange County in 2022 and looks forward to continue to care for a diverse patient populatio...Click to read more
Primary Care Doctor (Virtual)
4.39
·131 reviews
Was asked my preferred pronouns and these were ignored by the provider. Kind of bummed about that, but otherwise received care as expected - Feb 15, 2024 by Hannah Lin K.Click to read more
Santa Ana, CA
In-network · Aetna
Accepting new patients · Offers video visits · Excellent wait time · Expertise in upper respiratory infection (uri) + 1 more ·
Read bio
I am passionate about transforming lives through preventive care, helping individuals achieve a healthier and more fulfilling life. My dedication to bridging healthcare disparities and expanding access to care drives me to embrace new medical advancements that reach underserved populations. As a pr...Click to read more
Primary Care Doctor
5.00
·32 reviews
I have had two really bad experiences with doctors since moving out here and he was very nice, helpful and encouraging. Finally a good experience - Sep 10, 2024 by Matthew R.Click to read more
25 mi · 2501 E Chapman Ave, Ste 204, Orange, CA 92869
In-network · Aetna
Also offers video visits · Accepting new patients · 25+ years of experience · Highly recommended · Excellent wait time · Expertise in chronic high blood pressure + 3 more ·
Read bio
Philosophy of Care I went into family medicine to provide comprehensive, continuous, and caring medical services to the entire family. I completed my medical education at Yonsei University College of Medicine, followed by an internship at Methodist Hospital and a residency at Catholic Medical Cent...Click to read more
Primary Care Doctor
5.00
·1 review
25 mi · 2501 E Chapman Ave, Orange, CA 92869
In-network · Aetna
Also offers video visits · Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Dr. Kristi Kwan is a board-certified family medicine physician practicing with St. Joseph Heritage Medical Group in Orange, CA.Click to read more
Primary Care Doctor
4.98
·42 reviews
I would go back. No issues I see.Click to read more
25 mi · 2501 E Chapman Ave, Orange, CA 92869
In-network · Aetna
Accepting new patients · Highly recommended · Excellent wait time · Expertise in chronic high blood pressure + 1 more ·
Read bio
Dr. Sonja Abbassi is an internist with St. Joseph Heritage Medical Group. She believes being a physician is the privilege to help and support people. She treats her patients as she treats her family, without any exceptions. Her clinical interests include cholesterol, diabetes, nutrition, stress, str...Click to read more
Primary Care Doctor
4.97
·36 reviews
Excellent service in healthcare - Sep 7, 2023 by Chris F.Click to read more
25 mi · 2501 E Chapman Ave, Orange, CA 92869
In-network · Aetna
Accepting new patients · Highly recommended · Excellent wait time · Expertise in chronic high blood pressure + 2 more ·
Read bio
Dr. Matthew Schroeder is a family physician and primary care doctor in California who practices at St. Joseph - Family Medicine. He earned his Doctor of Medicine degree from the University of Illinois, Rockford, IL, and completed his residency at PIH Health Whittier Hospital in Whittier, CA. Dr. Sc...Click to read more
Primary Care Doctor
5.00
·30 reviews
25 mi · 2501 E Chapman Ave, Orange, CA 92869
In-network · Aetna
Accepting new patients · Highly recommended ·
Read bio
Dr. Kate Monahan is an internist with St. Joseph Heritage Medical Group practicing in Orange, CAClick to read more
Primary Care Doctor
4.56
·9 reviews
My appointment was great. I was greeted by a friendly staff office that checks me in right away and seen by my provider right away . - Aug 20, 2025 by Beatriz H.Click to read more
26 mi · 2212 E 4th St, Santa Ana, CA 92705
In-network · Aetna
Accepting new patients · Excellent wait time ·
Read bio
Dr. Crystal Fame is a Family Medicine physician practicing in Orange County, CA.Click to read more
Nurse Practitioner
5.00
·1 review
19.5 mi · 4955 Van Nuys Blvd, 301, Sherman Oaks, CA 91403
In-network · Aetna
Also offers video visits · Accepting new patients · Highly recommended · Excellent wait time · Expertise in depression + 2 more ·
Read bio
Appointment confirmation is contingent upon insurance verification and completed intake forms. Appointment date and time may change. In-person appointments are available on specific dates. Ms. Traci Babcock is a mindful nurse practitioner providing expert medical care to the community of Sherman O...Click to read more
Nurse Practitioner (Virtual)
5.00
·1 review
Sherman Oaks, CA
In-network · Aetna
Accepting new patients · Offers video visits · Highly recommended · Excellent wait time · Expertise in depression + 2 more ·
Read bio
Appointment confirmation is contingent upon insurance verification and completed intake forms. Appointment date and time may change. In-person appointments are available on specific dates. Ms. Traci Babcock is a mindful nurse practitioner providing expert medical care to the community of Sherman O...Click to read more
Primary Care Doctor
4.92
·52 reviews
If you are looking for a Doctor, Look no longer. Dr. Fouzia listens, and has an attention to detail. In my first visit she spent over an hour learning everything about my medical history. She explained a plan of action we are going to take together. I felt like someone actually heard my health conc...Click to read more
27 mi · 1095 Irvine Blvd, Tustin, CA 92780
In-network · Aetna
Also offers video visits · Accepting new patients · Highly recommended · Excellent wait time · Expertise in high cholesterol + 5 more ·
Read bio
While I enjoy all aspects of adult medicine, I particularly appreciate caring for the elderly. Older adults have unique needs, concerns, and issues, and protecting their health requires not only expertise in chronic and complex health conditions but also a willingness to listen carefully and proacti...Click to read more
Primary Care Doctor
5.00
·33 reviews
- Oct 21, 2022 by Claudia R.Click to read more
27 mi · 1095 Irvine Blvd, Tustin, CA 92780
In-network · Aetna
Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Please note that this provider only sees adult patients. Dr. Drumil Bhatt is an internal medicine physician with St. Joseph Heritage Medical Group practicing in Tustin, CA. Dr. Bhatt attended medical school at Medical College of Wisconsin, and completed his internship and residency at Harbor-UCLA M...Click to read more
Calendar Check
1-3 days

Average time it takes to be seen by a provider

Doctor
100k

Verified providers with a 4.8 average rating

Primary Care Physician
15+ years

In the business of finding quality care for patients

Patients trust Zocdoc
Made my life so much easier. As someone with chronic health conditions, Zocdoc makes it easy for me to build my medical team and keep track of everything!!
Rachel C
wish I would have found this dentist sooner highly recommend. Thanks Zocdoc
Stefan M
Zocdoc is great and so convenient. It always makes my appointments go smoothly as well.
Marta F
NPR
New York Times
Yahoo
Self
Verge
Wall Street Journal
Frequently asked questions

How can I make a same-day appointment with a Primary Care Doctor in South Gate who takes Aetna insurance?

On average, patients who use Zocdoc can search for a Primary Care Doctor in South Gate who takes Aetna insurance, book an appointment, and see the Primary Care Doctor within 24 hours. Same-day appointments are often available, you can search for real-time availability of Doctors in South Gate who accept Aetna insurance and make an appointment online.


How can I find a Primary Care Doctor in South Gate who takes Aetna?

Zocdoc lets you search specifically for a Primary Care Doctor in South Gate who takes Aetna. Just choose your carrier and plan from the drop-down menu at the top of the page. If you’re not sure which plan you have, you can use Zocdoc’s insurance checker to find out.


How can I book an appointment online with an Aetna Primary Care Doctor in South Gate?

Zocdoc is a free online service that helps patients find Aetna Doctors in South Gate and book appointments instantly. You can search for Aetna Doctors in South Gate by symptom or visit reason. Based on that information, you’ll see a list of providers who meet your search criteria, along with their available appointment slots.


How can I find a female Primary Care Doctor in South Gate who takes Aetna insurance?

When you search for Aetna Doctors in South Gate on Zocdoc, you can filter your results by gender, in addition to other criteria. That way, you’ll only see Aetna Doctors in South Gate who match your preferences.


How can I find an Aetna Primary Care Doctor in South Gate who sees patients after hours?

On Zocdoc, you can search specifically for Aetna Doctors in South Gate with availability after 5 p.m.


How can I find a top-rated Aetna Primary Care Doctor in South Gate?

You can use Zocdoc to find Aetna Doctors in South Gate who are highly rated by other patients. These ratings are based on verified reviews submitted by real patients. Every time a patient completes an appointment booked on Zocdoc, they’re invited to review their experience. Each review must comply with Zocdoc’s guidelines.


How can I find a video visit with a Primary Care Doctor online in South Gate?

Doctors in South Gate on Zocdoc who see patients through online video visits will have a purple video icon on their profiles. You can also filter your search results to show only Doctors who offer video visits.


Are video visits with a Primary Care Doctor online covered by Aetna?

Most insurers provide coverage for video visits at the same cost as in-person visits. You can search on Zocdoc specifically for Doctors in South Gate who accept Aetna for video visits by selecting your carrier and plan from the drop-down menu at the top of the page. We recommend you check with your insurance carrier directly to confirm your coverage and out of pocket costs for video visits.


How can I find an Aetna Primary Care Doctor in South Gate who sees patients in the morning or evening?

Zocdoc lets you search specifically for a Primary Care Doctor who has appointments available before 10:00 am, or after 5:00 pm. Just choose the special hours filter at the top of our search page.


How can I find an Aetna Primary Care Doctor in South Gate who sees patients during the weekend?

Zocdoc let's you see real-time availability for Aetna Doctors in South Gate. Many Aetna Doctors offer appointments on Saturdays and Sundays.


Zocdoc›Doctors›Los Angeles, CA›South Gate, CA›Aetna