Dr. James Marcus, MD, Greenwich, CT | Internist

About Dr. James Marcus

With over 10 years of experience as a hospitalist, Dr. Marcus is exceptionally comfortable managing higher-acuity and complex medical conditions — bringing that same depth of clinical expertise to his private practice. A board certified internist with residency training at The Jewish Hospital, affiliate of the University of Cincinnati, and fellowship-trained in Hepatology at the Beth Israel Liver Center, associated with Harvard Medical School, he is also board certified in Obesity Medicine. He brings advanced expertise in metabolic health, weight management, and liver disease — areas where thoughtful, preventive care can dramatically change long-term outcomes.

Popular visit reasons

Annual Physical

General Consultation

Glycosylated Hemoglobin Test

High Triglyceride Levels

Illness

New Patient Visit

Ozempic / Wegovy (Semaglutide) Consultation

Weight Loss Consultation

Annual Physical

General Consultation

Glycosylated Hemoglobin Test

High Triglyceride Levels

Office location

Dr. James Marcus, MD also offers online video visits for patients

James Marcus MD PC

4 Dearfield Dr, Ste 106, Greenwich, CT 06831

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Education and background

Practice names

James Marcus MD PC

Board certifications

American Board of Internal Medicine

Education and training

Medical School - Tel Aviv University, Doctor of Medicine
The Jewish Hospital — Mercy Health (Residency)
Beth Israel Deaconess Medical Center (Fellowship)

Languages spoken

English

Provider's gender

Male

NPI number

1568716629

Patient reviews

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Frequently asked questions

How soon can I make an appointment with Dr. James Marcus?

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

Is Dr. James Marcus accepting new patients?

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

Does Dr. James Marcus accept my insurance?

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

Can I make an appointment with Dr. James Marcus online?

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

What practice does Dr. James Marcus work with?

Dr. James Marcus works with James Marcus MD PC.

Where is Dr. James Marcus's office located?

Dr. James Marcus has 2 office locations, including in Greenwich and Mashantucket, view full addresses on Dr. Marcus's profile.

Which board certifications does Dr. James Marcus have?

Dr. James Marcus is certified by American Board of Internal Medicine.

What are common reasons for patients to see Dr. James Marcus?

Dr. James Marcus frequently sees patients for Annual Physical, General Consultation, Illness, New Patient Visit, and Weight Loss Consultation. You can see other visit reasons for Dr. James Marcus on their profile.