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

Nsisongikanabasi Mfon Udoh, MD

Individual provider Internal Medicine Physician · NPI 1487279824

Nsisongikanabasi Mfon Udoh, MD is registered under Family Practice in Hartford, Connecticut. Qualified in 2018, 8 years ago. Practices with Margaret Chustecka Internal Medicine of Greater New Haven, a 30-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Connecticut.

Years since qualifying
8
Licensed in
CT
In the registry since
2020
Specialties on file
3
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

80 Seymour St Bldg 502
Hartford, CT 06102-8000
Phone: (860) 972-0549
Fax: (860) 545-5221
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 7531 S Stony Island Ave, Chicago, IL 60649-3954 — (773) 947-7500

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 76284 (CT)
Internal Medicine Physician Taxonomy 207R00000X · Licence 76284 (CT)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1487279824
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedJune 11, 2020
Last updated in NPPESJuly 22, 2026
Certification dateJuly 22, 2026

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Also practisesGENERAL PRACTICE
Medical schoolOTHER
Graduated 2018 (8 years in practice)
Group practice Margaret Chustecka Internal Medicine Of Greater New Haven — 30 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients316
Services billed 324 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

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.

Food and Beverage $364 16 payments · a meal or drink at a meeting or visit, not a fee

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 Margaret Chustecka Internal Medicine of Greater New Haven

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 30 clinicians in the practice; 12 are shown here.

Other providers in Hartford