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What patients are saying
Overall rating
5.00
Average wait time
5.00
Bedside manner
5.00
“Very friendly, attentive and professional. It’s refreshing to see a doctor who actually cares about your health journey and isn’t just acting like it. Dr. Szerlag reminds me of what seeing a doctor was like when healthcare was simpler and more personal. I would absolutely recommend her to anyone.”
Christopher K.July 23, 2026
“If you are looking to go to a provider who actually listens to you and your needs, you must see Katarzyna Szerlag at InnerGlow. Katarzyna is so patient and kind. You can tell she is so passionate about her work and genuinely wants to help. She works with you and creates a plan to ensure you hit your wellness goals. I HIGHLY recommend InnerGlow for anyone who is looking for a new family provider!! 10/10”
KLLess than 1 month ago
About Katarzyna (Kasia) Szerlag
**We kindly ask that you provide least 24 hours notice if you need to cancel or reschedule you appointment. No show fee is $100.
Please note that late cancellations/no-shows will result in a no-show fee billed to the patient. Self-pay costs: New patient visit - $300 | Follow up visit - $150.**
With over 20 years of experience in healthcare, Katarzyna (Kasia) Szerlag is a highly skilled and compassionate Family Nurse Practitioner dedicated to delivering exceptional, personalized care. Her extensive clinical background spans primary care, urgent care, emergency medicine, and occupational wellness, providing her with a broad and comprehensive foundation in modern medicine.
Kasia has practiced in leading healthcare organizations including Advocate–Aurora Health and the AbbVie 360 Wellness Clinic, where she provided health services.
In addition to her clinical practice, Kasia has served as an adjunct nursing faculty member, mentoring and educating future healthcare professionals. Her commitment to lifelong learning, evidence-based medicine, and patient-centered care has earned her the trust and respect of both patients and colleagues.
At InnerGlow Wellness Clinic, her private boutique practice, Kasia blends advanced medical expertise with functional and lifestyle medicine to provide personalized weight management, hormone optimization, primary care, and wellness coaching. Through a collaborative and empowering approach, she partners with each patient to create individualized care plans that support lasting health, confidence, and vitality.
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In-network insurances
Katarzyna (Kasia) Szerlag, APRN, FNP-BC has +29 in-network plans.
Office location
Katarzyna (Kasia) Szerlag, APRN, FNP-BC also offers online video visits for patients
Education and background
Practice names
Board certifications
- American Nurses Credentialing Center
Education and training
- University of Illinois Chicago, Master's in Family Health Nursing
Languages spoken
- English
- Polish
Provider's gender
Female
NPI number
1366998270
Patient reviews
All reviews have been submitted by patients after interacting with the practice.
Overall rating
5.00
Wait time
5.00
Bedside manner
5.00
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11 reviews
Most relevant
Kasia is kind, has great bed side manners and pay attention to her patients. Highly recommend her!
Less than 1 month agoJS
Highly professional
Very warm atmosphere
I feel that I’m really being helped
Less than 1 month agoJB
Very friendly, attentive and professional. It’s refreshing to see a doctor who actually cares about your health journey and isn’t just acting like it. Dr. Szerlag reminds me of what seeing a doctor was like when healthcare was simpler and more personal. I would absolutely recommend her to anyone.
July 23, 2026Christopher K.Verified patient
If I could give my experience there 10 stars I would. Kasia took the time to review my entire case to decide on the testing and treatments that were custom designed to my individual needs. I look forward to a lasting relationship to address my health and overall fitness.
Less than 1 month agoTB
If you are looking to go to a provider who actually listens to you and your needs, you must see Katarzyna Szerlag at InnerGlow. Katarzyna is so patient and kind. You can tell she is so passionate about her work and genuinely wants to help. She works with you and creates a plan to ensure you hit your wellness goals. I HIGHLY recommend InnerGlow for anyone who is looking for a new family provider!! 10/10
Less than 1 month agoKL
Kasia did an excellent job! She has such an amazing personality and made me feel so comfortable. Not only is she someone you can go to for medical care, but also someone you can talk to about anything. 10/10, definitely recommend!!
July 19, 2026Vanessa K.Verified patient
I can't speak highly enough of Nurse Practitioner Kasia at the Innerglow Clinic. She is incredibly thorough and compassionate. Kasia took the time to listen to my concerns and to understand my full history and ordered relevant tests, which other providers had overlooked for years.
She made me feel very comfortable and explained everything in details. Kasia puts her heart into every moment of the visit and truly wants the best outcome for her patient.
She developed a personalized care plan for me and I’ve noticed a significant improvement. I highly recommend Kasia and her exceptional service!
Less than 1 month agoAC
Kasia is extremely good an knowledgeable, also ver thorough. She also make sure patient understands the treatment, the reason, and consult the prefered course of action . She always follows up and she cares about her patients
Less than 1 month agoDD
Me and my husband had a great experience with Kasia Szerlag, during our IV vitamin therapy. She was professional, knowledgeable, and took the time to explain the treatment and answer all of our questions. She made us feel comfortable throughout the entire visit, and the IV was administered gently and efficiently. I appreciated her caring attitude and attention to detail. We would highly recommend her to anyone looking for IV vitamin therapy.
Less than 1 month agoDB
Highly recommend Kasia for their exceptional care and professionalism. They are energetic, compassionate, and always willing to help patients with genuine kindness and attention. Their thorough approach and outstanding talent make them a trusted and valued healthcare provider.
Less than 1 month agoDG
Kasia, NP, is wonderful. She combines great medical knowledge with genuine compassion. She listened to my issues, found the perfect treatment, and checked in on my progress. I highly recommend her care!
Less than 1 month agoAS
How soon can I make an appointment with Katarzyna (Kasia) Szerlag?
Generally, Katarzyna (Kasia) Szerlag has appointments available on Zocdoc within 1 week. You can see Katarzyna (Kasia) Szerlag's earliest availability on Zocdoc and make an appointment online.
Is Katarzyna (Kasia) Szerlag accepting new patients?
Katarzyna (Kasia) Szerlag generally accepts new patients on Zocdoc. You can see Katarzyna (Kasia) Szerlag's earliest availability on Zocdoc and schedule an appointment online.
Does Katarzyna (Kasia) Szerlag accept my insurance?
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Can I make an appointment with Katarzyna (Kasia) Szerlag online?
Yes, you can make an appointment online with Katarzyna (Kasia) Szerlag using Zocdoc. It’s simple, secure, and free.
What practice does Katarzyna (Kasia) Szerlag work with?
Katarzyna (Kasia) Szerlag works with InnerGlow Clinic PLLC.
Where is Katarzyna (Kasia) Szerlag's office located?
Katarzyna (Kasia) Szerlag has 3 office locations, including in Arlington Heights and New Ashford, view full addresses on Katarzyna (Kasia) Szerlag's profile.
Which board certifications does Katarzyna (Kasia) Szerlag have?
Katarzyna (Kasia) Szerlag is certified by American Nurses Credentialing Center.
What are common reasons for patients to see Katarzyna (Kasia) Szerlag?
Katarzyna (Kasia) Szerlag frequently sees patients for Annual Pap Smear / GYN Exam, Annual Physical, Gastroenterology Consultation, Illness, and Pediatric Consultation. You can see other visit reasons for Katarzyna (Kasia) Szerlag on their profile.
What languages does Katarzyna (Kasia) Szerlag speak?
Katarzyna (Kasia) Szerlag speaks English and Polish.
How do patients rate Katarzyna (Kasia) Szerlag in reviews?
11 patients have reviewed Katarzyna (Kasia) Szerlag. The overall rating for this doctor is 5/5. They have a 5/5 rating for bedside manner and a 5/5 rating for wait time. You can read individual reviews and ratings on their profile.