Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Internal Medicine

Rafiqur R. Chowdhury, MD

Sees patients in Brooklyn, NY · New York

Summary

Dr. Rafiqur R. Chowdhury, MD is an internal medicine doctor at 100 N Portland Ave, Brooklyn, NY 11205. Phone: (718) 616-3885. Accepts Medicare assignment. In 2024, Rafiqur R. Chowdhury had 15 Original Medicare patients and 139 services. NPI 1063697480. Source: CMS National Downloadable File, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 100 N Portland Ave, Brooklyn, NY 11205 · Directions
  • Phone: (718) 616‑3885
  • Medicare: Accepts Medicare assignment
  • Group practice: New York City Health and Hospitals Corporation
  • Medical school: graduated 1982 (44 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Rafiqur R. Chowdhury, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Rafiqur R. Chowdhury accept Medicare assignment?
Yes. Medicare's clinician data says Rafiqur R. Chowdhury accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Rafiqur R. Chowdhury see?
In 2024, CMS data shows 15 Original Medicare patients and 139 services for Rafiqur R. Chowdhury. This counts Original Medicare only and measures volume, not quality.
What is Rafiqur R. Chowdhury's NPI number?
1063697480. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Rafiqur R. Chowdhury, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients15
Services billed to Medicare139
Different services or procedures12
Participating Medicare providerYes
Average age of these patients68

Most frequent services

  1. Insertion of needle into vein for collection of blood sample (36415)36 services
  2. Blood test, comprehensive group of blood chemicals (80053)33 services
  3. Blood test, lipids (cholesterol and triglycerides) (80061)30 services

Practice locations

Addresses where Rafiqur R. Chowdhury is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Rafiqur R. Chowdhury as a member of this group (CMS data updated October 2, 2026).

  • New York City Health and Hospitals Corporation571 clinicians in the group

Specialties

Find other Internal Medicine doctors in New York →

Other internal medicine doctors in Brooklyn

Clinicians with the same Medicare primary specialty in Brooklyn, NY — not a recommendation.

All internal medicine doctors in Brooklyn →

Other clinicians in New York City Health and Hospitals Corporation

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Graduation year1982 (44 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1063697480
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  2. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians