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

Internal Medicine

Syed S. Hassan, MD

Sees patients in Brooklyn, NY · Jamaica, NY · New York

Summary

Dr. Syed S. Hassan, MD is an internal medicine doctor at 739 Knickerbocker Ave, Brooklyn, NY 11221. Phone: (718) 456-1900. Accepts Medicare assignment. In 2024, Syed S. Hassan had 55 Original Medicare patients and 203 services. NPI 1750457032. 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: 739 Knickerbocker Ave, Brooklyn, NY 11221 · Directions (1 more location)
  • Phone: (718) 456‑1900
  • Medicare: Accepts Medicare assignment
  • Medical school: graduated 1985 (41 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Syed S. Hassan, 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 Syed S. Hassan accept Medicare assignment?
Yes. Medicare's clinician data says Syed S. Hassan 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 Syed S. Hassan see?
In 2024, CMS data shows 55 Original Medicare patients and 203 services for Syed S. Hassan. This counts Original Medicare only and measures volume, not quality.
What is Syed S. Hassan's NPI number?
1750457032. 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 Syed S. Hassan, 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 patients55
Services billed to Medicare203
Different services or procedures12
Participating Medicare providerYes
Average age of these patients66

Most frequent services

  1. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)121 services
  2. Insertion of needle into vein for collection of blood sample (36415)28 services
  3. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)21 services
  4. Face-to-face behavioral counseling for obesity, 15 minutes (G0447)12 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High cholesterol75%
  • High blood pressure58%
  • Diabetes42%
  • Arthritis20%
  • Chronic kidney disease20%

Practice locations

Addresses where Syed S. Hassan is enrolled with Medicare (CMS data updated October 2, 2026).

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 →

Clinician information

CredentialMD
Graduation year1985 (41 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1750457032
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