Welcome to Park Avenue Endocrinology a leading private endocrinology office dedicated to providing comprehensive and compassionate care for all endocrine-related health concerns. Our team of experienced endocrinologists and in house dietitian/ diabetes educator is committed to diagnosing, treating, and managing a wide range of endocrine disorders to help you achieve optimal health and well-being. Our office looks at the whole patient as an individual and not just lab levels. Our Services At Park Avenue Endocrinology we specialize in the diagnosis and treatment of various endocrine disorders, including: • Diabetes Management: Personalized care plans to help manage blood sugar levels and prevent complications. • Thyroid Disorders: Comprehensive evaluation and treatment for conditions such as hypothyroidism, hyperthyroidism, and thyroid nodules. • Hormonal Imbalances: Diagnosis and management of issues related to adrenal, pituitary, and reproductive glands. • Osteoporosis and Bone Health: Strategies to prevent and treat bone density loss and related conditions. • Metabolic Disorders: Expert care for conditions like metabolic syndrome and lipid disorders. Why Choose Us? • Expert Care: Our board-certified endocrinologists have extensive experience and specialized training in treating a wide range of endocrine disorders. • Advanced Technology: We use the latest diagnostic tools and treatment methods to provide accurate diagnoses and effective care. • Personalized Approach: Each patient receives a tailored treatment plan designed to meet their unique health needs and lifestyle. • Comprehensive Support: From initial consultation to follow-up care, we offer continuous support and education to help you manage your condition. Our Team Meet our dedicated team of professionals who are here to support you on your journey to better health: • Endocrinologists: Highly skilled doctors specializing in endocrine system disorders. • Nurses and Medical Assistants: Compassionate staff providing essential patient care and support. • Dietitians and Nutritionists: Experts offering dietary advice and management plans tailored to your condition. • Administrative Staff: Friendly team members handling scheduling, billing, and insurance matters to ensure a smooth experience. Patient Resources We believe in empowering our patients with knowledge and resources to manage their health effectively: • Educational Materials: Access a wealth of information on various endocrine disorders, treatment options, and healthy lifestyle tips. • Support Groups: Connect with others facing similar health challenges and share experiences and advice. • Online Portal: Conveniently manage your appointments, access medical records, and communicate with your healthcare team. Convenient and Accessible Care Located in the heart of Manhattan our office is easily accessible and designed to provide a comfortable and welcoming environment for all our patients. Our dietitian/diabetes educator offers telemedicine services, allowing you to receive expert care from the comfort of your home. Our commitment is to deliver world-class medical care to our patients. Although insurance companies have lower out-of-pocket costs, in-network providers are often limited by restrictive regulations as per timing and scope of practice. We have chosen to be out-of-network providers to ensure our patients get the highest level of care, allowing us to cater to each patient as an individual. Our providers are out-of-network providers with all insurance providers, including government-issued Medicare and Medicaid. We have a set fee schedule that only applies to your office visit, which will help minimize any unexpected charges. Lab studies and medications will be covered in-network by your insurance. Our office will provide you with an itemized receipt so that you may submit your claims out-of-network for reimbursement, as per your plan’s policy, or through your FSA/HSA accounts. You may pay for the office visit with your Flex Card.**

Patient reviews

All reviews have been submitted by patients after interacting with the practice.

Overall rating

4.78

Wait time

4.44

Bedside manner

4.85

Your trust is our top concern, so providers can't pay to alter or remove reviews. We also don't publish reviews that contain any private patient health information. Learn more here

2751 reviews

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Dr. Jackness was very welcoming and understands my concerns with Hashimoto’s! I can’t wait to keep working with him

May 1, 2026Irma B.Verified patient

Dr Jackness was incredibly helpful and a great communicator …excited and grateful that he will be my doctor going forward.

February 2, 2026Georgio K.Verified patient

I highly recommend Dr. Jackness. He is caring, thoughtful and thorough. I feel very fortunate to have him as my physician.

patricia F.Verified patient

Best endoncrologist I ever had, and I did try many. Very knowledgeable, friendly and caring, up to date with research.

September 5, 2025Ana R.Verified patient

Great Doctor and good staff! I highly recommend Doctor Jackness and Park Avenue Endocrinology.

June 2, 2026Roy G.Verified patient

Dr. Jackness does not accept insurance, but he is worth every penny out-of-pocket that I spend.

April 30, 2026Beth K.Verified patient

Dr. Jackness is thorough, knowledgeable and has a great bedside manner. An absolute pleasure

January 22, 2026Scott B.Verified patient

One of the best physicians I have ever seen in my life, cannot recommend highly enough!

November 8, 2025Hamdan A.Verified patient

Dr. Clifton Jackness is very patient doctor. Thank you very much.

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I couldn’t ask for a more professional, knowledgeable and caring doctor!

March 23, 2026Marylou B.Verified patient

Dr. Jackness is the Best!!! He is Very Knowledgable and Very Kind!! I Highly Recommend him. His Office Staff are Wonderful!!!

November 23, 2016Joseph M.Verified patient

As usual Dr. Jackness answered in detail all my questions. I like his professionalism as well as the appointment efficiency.

May 27, 2016Madalina M.Verified patient

Dr. Jackness is knowledgeable, thorough and easy to talk to. I have consistently had an excellent experience in his care.

May 27, 2020Nancy M.Verified patient

The dr and staff are amazing! You can tell they really care for each individual person. I’m so happy I found this Dr.

February 9, 2023Sonia C.Verified patient

He was knowledgeable, attentive, got back to me by phone when I had prescription questions. Overall a terrific experience!

August 4, 2020Lisa Y.Verified patient

Extremely smart, incredibly caring and kind, Dr Jackness is everything you could possibly want and need in a physician.

July 15, 2020Andrea W.Verified patient

Dr. Jackness is a very caring doctor. Friendly and professional. He is very responsive and works to help me feel my best.

Wendy W.Verified patient

Dr. Jackness is intelligent and finds good solutions to issues while talking at the level of the patient's understanding.

November 3, 2016William M.Verified patient

Dr. Jackness is a very good doctor. He gives a lot of attention to the patient health problem. I highly recommend him.

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It was a wonderful visit. All of my questions and concerns were answered. I am confident in his assessment of my problem.

May 21, 2020Hope N.Verified patient

Dr. Jackness was very friendly and professional. He explained everything thoroughly and was patient with my questions.

August 28, 2014Carolyn R.Verified patient

Discussed blood analysis and the meaning. Dr. Jackness explained the results patiently, understandably, and carefully.

May 5, 2020William M.Verified patient

Dr. Jackness is such a thoughtful doctor! The wait was a bit longer today but they were busy at the start of the year

January 2, 2019Cody P.Verified patient

Great doctor and cares a lot about her patients. Staff were super nice. It was an easy and a pleasant experience all around

April 12, 2026Zlata G.Verified patient

Dr. Goddard is a very knowledgeable physician who bases her advice on solid research. She's also a lovely person!

July 4, 2026Ellen W.Verified patient

Dr. Goddard was extremely thorough and informative. I truly enjoyed my visit. She asked me more questions than I asked her!!

July 29, 2015Initials hidden

Dr. Goddard is always so pleasant and professional. I feel well cared for and that she will make the right decisions for me.

February 23, 2015Mary F.Verified patient

Dr. Goddard was incredibly sweet, patient, and informative. Most professional and attentive doctor I have ever seen in NYC.

Kathy R.Verified patient

Very thorough and professional. Takes time to answer questions. Uses language that is understandable to non-medical person.

January 20, 2017Initials hidden

Dr Goddard is a wonderful doctor and comes highly recommended. She puts you at ease and office staff is very nice as well.

July 22, 2020Victoria C.Verified patient

Consult recommended by my Gyn. Dr. Goddard very thorough, explained everything and followed up immediately. Great physician.

June 19, 2015Monique S.Verified patient

It was good. She is a good listener and I had ample opportunity to ask questions. Very straightforward, solid advice.

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Dr. Goddard is related, listens,. I was able to discuss what I wanted to with her and work out a plan. Very good meeting

July 3, 2018Lucia K.Verified patient

Terrific. Very professional, I felt very confident of her skills and knowledge to help me. Genuinely interested on me.

September 8, 2017Steven T.Verified patient

Dr. Goddard was very thorough and very pleasant. This was my first time seeing her, but the experience was really good.

November 30, 2016Jose T.Verified patient

It was such a relief to see Dr. Goddard after having another doctor brush off my concerns. Highly recommend to anyone.

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The doctor is very nice and friendly. She listened everything in detail. She knows her stuff well. Highly recommended.

August 19, 2019Michael T.Verified patient

The doctor took a lot of time and was very thorough. Pleasant office staff and nurses. Would highly recommend.

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Dr. Etyan Listens and engages you in conversation without concentrating on her computer while listening to you.

October 27, 2024Pamela F.Verified patient

Helpful staff all around, and no excessive waiting or cause for concern.

March 24, 2026Initials hidden

Dr. Eytan is great. Highly professional and well-informed and also not a scold when you sometimes don't follow guidelines.

September 25, 2020Gary B.Verified patient

Dr. Shira Eytan is a personable Dr that takes her time to listen to your concerns and then she follows up with her patients.

October 26, 2020Juan R.Verified patient

She was kind and listen to everything I had to say. I was pleased with the entire visit and all the test that where done.

April 28, 2018Jacqueline R.Verified patient

Dr Shira took the time to explain the medical questions I asked and recommended some solutions . Adeline E 28th March 2016

March 29, 2016Adeline Yee Ling E.Verified patient

Dr. Eytan is thorough, patient, and very kind. She is extremely conscientious and I know I am in excellent hands with her.

June 26, 2017Cherise K.Verified patient

She has been a wonderful addition to my life. I have been losing weight with her help. She is very knowledgeable and kind.

May 30, 2017Tya R.Verified patient

She's super smart and listens well. She shows the appropriate amount of care and concern. I would definitely recommend her.

August 18, 2016Lisa C.Verified patient

Dr. Eytan is very professional and knowlegeable. She answered all my questions and explained in detail what to expect.

July 13, 2019Catherine M.Verified patient

Dr Eytan professional medical service is the best my family have experienced. So glad to have her as a medical provider.

Alexis T.Verified patient

Great doctor. Very holistic which is good when you want overall health. I saw her for my thyroid and weight management

June 28, 2018Rayna L.Verified patient