Dr. Avi Sonnenschein, DO, NY | Internist

What patients are saying

Overall rating

4.88

Average wait time

4.58

Bedside manner

4.84

“Dr. Sonnenschein was great. He is very nice, attentive, and personable. He answered all questions and I am happy to have him as my PCP.”

Brogan D.December 15, 2025

About Dr. Avi Sonnenschein

If you need to cancel your appointment within 24 hours of the scheduled time, please call the office. Avi Sonnenschein (pronounced sun-in-shine), DO, practices primary care and osteopathic medicine at Mount Sinai Doctors-55 East 34th Street in Midtown Manhattan. Originally from Kansas, Dr. Sonnenschein earned his medical degree from Touro University Nevada College of Osteopathic Medicine. He completed his residency at Mount Sinai South Nassau and is a certified internal medicine physician by the American Board of Internal Medicine. He went on to complete a fellowship in osteopathic and neuromuscular medicine at Rowan University School of Osteopathic Medicine. Dr. Sonnenschein believes that the patient is the most important person in the care team. Led by evidence-based practice, he aims to address the underlying cause of symptoms and collaborates with each patient to develop an individualized treatment plan to reach their health goals. Dr. Sonnenschein takes the time to respectfully and empathetically listen to patients questions and concerns. His holistic approach prioritizes preventive medicine and helps patients develop a lifestyle that encourages healthy living now and in the future. Dr. Sonnenschein strives to provide not only the best healthcare, but the best care. In addition to primary care, Dr. Sonnenschein specializes in hands-on, osteopathic treatments to help harness the body’s innate healing processes. This treatment can address neuromusculoskeletal issues such as headache, neck pain, back pain, joint pain, and muscle pain, and can also support ENT, cardiac, pulmonary, and gastrointestinal conditions. He also uses osteopathic techniques for pregnant and postpartum women with pain and for infants diagnosed with plagiocephaly, reflux, and latching issues. Outside of work, Dr. Sonnenschein enjoys running, designing board games, playing saxophone, and spending time with his wife and family.

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Popular visit reasons

Annual Physical

Arthritis

Flu

General Consultation

Illness

Infection Consultation

Ozempic / Wegovy (Semaglutide) Consultation

Weight Loss Consultation

Annual Physical

Arthritis

Flu

General Consultation

Office location

Dr. Avi Sonnenschein, DO also offers online video visits for patients

Mount Sinai Doctors

55 E 34th St, 5th Floor, New York, NY 10016

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Education and background

Practice names

Mount Sinai Doctors

Board certifications

American Board of Internal Medicine

Education and training

Medical School - Touro University California, Doctor of Osteopathic Medicine
Mount Sinai South Nassau, Residency in Internal Medicine
Rowan University School of Osteopathic Medicine (Fellowship)

Languages spoken

English

Provider's gender

Male

NPI number

1902480932

Patient reviews

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

Overall rating

4.88

Wait time

4.58

Bedside manner

4.84

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

24 reviews

Most relevant

Great doctor. Finally a doctor that cares and listens.

Less than 3 months agoInitials hidden

Yes

March 26, 2026Debbie N.Verified patient

Good doctor and wasn't in a rush.

December 19, 2025Leonardo V.Verified patient

Dr. Sonnenschein was great. He is very nice, attentive, and personable. He answered all questions and I am happy to have him as my PCP.

December 15, 2025Brogan D.Verified patient

March 28, 2026Leonid C.Verified patient

March 24, 2026Ashlyn L.Verified patient

March 16, 2026Peter P.Verified patient

March 6, 2026Ernest M.Verified patient

February 25, 2026Harrison S.Verified patient

Less than 3 months agoInitials hidden

February 7, 2026Zachary A.Verified patient

February 7, 2026Ashlyn L.Verified patient

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January 29, 2026Celia B.Verified patient

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January 16, 2026Tadhg M.Verified patient

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January 5, 2026Randy A.Verified patient

December 23, 2025Yitzchak D.Verified patient

December 18, 2025Prathamesh N.Verified patient

Frequently asked questions

How soon can I make an appointment with Dr. Avi Sonnenschein?

Generally, Dr. Avi Sonnenschein has appointments available on Zocdoc within 1 week. You can see Dr. Sonnenschein's earliest availability on Zocdoc and make an appointment online.

Is Dr. Avi Sonnenschein accepting new patients?

Dr. Avi Sonnenschein generally accepts new patients on Zocdoc. You can see Dr. Sonnenschein's earliest availability on Zocdoc and schedule an appointment online.

Does Dr. Avi Sonnenschein accept my insurance?

Choose your insurance plan to verify if Dr. Sonnenschein is in-network.

Can I make an appointment with Dr. Avi Sonnenschein online?

Yes, you can make an appointment online with Dr. Sonnenschein using Zocdoc. It’s simple, secure, and free.

What practice does Dr. Avi Sonnenschein work with?

Dr. Avi Sonnenschein works with Mount Sinai Doctors.

Where is Dr. Avi Sonnenschein's office located?

Dr. Avi Sonnenschein has 2 office locations in New York, view full addresses on Dr. Sonnenschein's profile.

Which board certifications does Dr. Avi Sonnenschein have?

Dr. Avi Sonnenschein is certified by American Board of Internal Medicine.

What are common reasons for patients to see Dr. Avi Sonnenschein?

Dr. Avi Sonnenschein frequently sees patients for Annual Physical, Arthritis, Illness, Infection Consultation, and Weight Loss Consultation. You can see other visit reasons for Dr. Avi Sonnenschein on their profile.

What languages does Dr. Avi Sonnenschein speak?

Dr. Avi Sonnenschein speaks English.

How do patients rate Dr. Avi Sonnenschein in reviews?

24 patients have reviewed Dr. Avi Sonnenschein. The overall rating for this doctor is 4.88/5. They have a 4.84/5 rating for bedside manner and a 4.58/5 rating for wait time. You can read individual reviews and ratings on their profile.