Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Stefan Somlo, MD

Individual provider Nephrology Physician · NPI 1538144035

Stefan Somlo, MD practises Internal Medicine in New Haven, Connecticut. Graduated from Columbia University College of Physicians and Surgeons in 1984, 42 years ago. Practices with Yale University, a 2,618-clinician group and accepts Medicare assignment. Licensed in Connecticut.

Years since qualifying
42
Trained at
Columbia University College of Physicians and Surgeons
Licensed in
CT
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

333 Cedar St Bb 114
New Haven, CT 06510-3206 Not confirmed with CMS for 13 years — call before visiting
Phone: (203) 785-4184
Fax: (203) 785-7068
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nephrology Physician (primary) Taxonomy 207RN0300X · Licence 028167 (CT)

Record details

NPI number1538144035
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 7, 2005
Last updated in NPPESJuly 18, 2013

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolCOLUMBIA UNIVERSITY COLLEGE OF PHYSICIANS AND SURGEONS
Graduated 1984 (42 years in practice)
Group practice Yale University — 2618 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Consulting Fee $28,125 5 payments

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Yale University

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2618 clinicians in the practice; 12 are shown here.

Other providers in New Haven