Photo of Dr. James Underberg

Dr. James Underberg, MD

Concierge Internal Medicine physician, New York, NY

Castle Connolly Private Health Partners
5.0 (10 reviews)

Dr. Underberg is a board-certified internal medicine physician who treats adults with lipid disorders.

110 East 55th Street, 9th Floor, New York, NY 10022
At a glance
Practice model
Private practice, does not accept insurance
Board certification
American Board of Internal Medicine and American Board of Clinical Lipidology
Patients
Adults
Languages
English

Facts on this page last checked October 2026. How we check doctors

About Dr. Underberg

Dr. Underberg completed his internal medicine residency at NYU Medical Center in 1989. He is board certified by the American Board of Internal Medicine in internal medicine. He is also a diplomate of the American Board of Clinical Lipidology.

He works in internal medicine and lipid disorders, and his patients are adults. He is a Clinical Assistant Professor of Medicine at NYU Grossman School of Medicine. He is an affiliated provider at NYU Langone Health, but he practices privately and is not employed by NYU Langone.

His research interests include clinical lipidology, cholesterol management and inherited lipoprotein disorders. He maintains an active clinical research program.

Membership and fees

Dr. Underberg does not accept insurance.

Services

Internal medicine Lipid disorders Adult patients
What internal medicine doctors commonly treat

Education and credentials

Degree
MD
Residency
Internal medicine, NYU Medical Center (1989)
Board certification
American Board of Internal Medicine (internal medicine, 1989) and diplomate of the American Board of Clinical Lipidology
Professional memberships
Fellow of the National Lipid Association
NPI
1538167127

Location

110 East 55th Street, 9th Floor, New York, NY 10022
Castle Connolly Private Health Partners practice page
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Recognition and research

Publications

Co-author of a long-term study of lomitapide for homozygous familial hypercholesterolemia, Journal of Clinical Lipidology, 2026
Author of 55 publications

Teaching and research roles

Maintains an active clinical research program and has authored numerous articles and book chapters in clinical lipidology

Patient reviews

5.0
10 reviews
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Write a review
Rated 5 out of 5

Great!

"Very professional care and consult."

FMDD UserNov 2024
Rated 5 out of 5

Amazing!

"Enlightened me about my condition."

FMDD UserOct 2024
Rated 5 out of 5

Awesome!

"Guided me in choosing the best treatment option."

FMDD UserOct 2024
Rated 5 out of 5

taking very good care of me

"Dr. Underberg has treated me for a very long time. He has always struck me as being meticulous, considerate, and extremely knowledgeable. He seems to be taking very good care of me."

FMDD UserJul 2022

Questions patients ask

Does Dr. Underberg take insurance?

No. Dr. Underberg does not accept insurance.

Is Dr. Underberg board certified?

Yes. Dr. Underberg is board certified by the American Board of Internal Medicine in internal medicine. He is also a diplomate of the American Board of Clinical Lipidology.

Where did Dr. Underberg train?

Dr. Underberg completed an internal medicine residency at NYU Medical Center in 1989.

Is Dr. Underberg employed by NYU Langone?

No. He is an affiliated provider at NYU Langone Health, practicing in a private practice.

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