Internist in New York City
An internal medicine doctor for complex, ongoing symptoms.
Dr. Raphael Kellman is an internist, a physician trained in internal medicine, practicing at 7 West 45th Street in Midtown Manhattan. For more than 25 years his focus has been adults with complex, chronic or unexplained symptoms, especially those involving the thyroid, the gut and the immune system.
Want an internist who has time to dig deeper?
- Your appointments feel rushed and your questions go unanswered
- You have symptoms that cross gut, thyroid, energy and mood
- You want thorough testing and a doctor who explains it
You’re not alone. Many of Dr. Kellman’s patients arrive after years of unexplained symptoms and being told their labs look normal. His job is to keep looking.
What is an internist?
An internist is a doctor who specializes in internal medicine: the diagnosis and treatment of illness in adults. Internists are trained to look at the whole body and to sort out problems where several systems are involved at once, which is why many patients with long-running or unclear symptoms end up seeing one.
Dr. Kellman trained in internal medicine at Albert Einstein College of Medicine of Yeshiva University.
How Dr. Kellman practices internal medicine
Dr. Kellman combines the diagnostic approach of internal medicine with functional and integrative medicine. In practice that means a thorough history, testing chosen to answer specific questions, conventional treatment where it's indicated, and close attention to how the gut, thyroid, hormones and immune system affect each other.
He is the pioneer of Microbiome Medicine and the author of more than 10 books on the microbiome and health.
Common reasons patients see Dr. Kellman
- Persistent thyroid symptoms, low thyroid and Hashimoto's
- Fatigue and brain fog without a clear cause
- Bloating, SIBO, constipation and other digestive problems
- Autoimmune conditions
- Weight and metabolic concerns
- Symptoms after COVID or Lyme disease
What to expect
Your first visit is a detailed review of your symptoms, history, medications and past results. Bring copies of earlier lab reports. Testing is chosen from there, and follow-up visits review results and adjust your plan. The initial consultation is $575 and follow-ups are $475; Dr. Kellman is out of network. Fees & insurance →
Visiting the office
Raphael Kellman, MD · 7 West 45th Street, Suite 301, New York, NY 10036 · (212) 717-1118. The office is in Midtown Manhattan, a short walk from Bryant Park and Grand Central. Telehealth is available for many aspects of care.
Common questions
What does an internist do?
An internist is a physician who specializes in diagnosing and treating illness in adults, with training to manage problems involving several body systems at once.
Is an internist the same as a primary care doctor?
Many internists work as primary care doctors, and some focus on particular kinds of problems. Dr. Kellman's practice focuses on complex, chronic and unexplained symptoms. Ask the office about your specific needs.
Where did Dr. Kellman train?
Dr. Kellman trained in internal medicine at Albert Einstein College of Medicine of Yeshiva University.
Do you offer telehealth?
Yes, for many aspects of care. Some testing and in-office treatments require a visit to the Midtown office.
Let's look deeper together.
Book a ConsultationThis page is for general information and is not medical advice. Individual results vary. Please consult a qualified clinician about your own care.