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Internal Medicine

Gurpreet K. Hazra, MD

Works at hospitals in San Leandro, CA · California

Summary

Dr. Gurpreet K. Hazra, MD is an internal medicine doctor at 3553 Whipple Rd, Union City, CA 94587. Phone: (510) 675-4010. Accepts Medicare assignment. In 2024, Gurpreet K. Hazra had 14 Original Medicare patients and 635 services. NPI 1639257488. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 3553 Whipple Rd, Union City, CA 94587 · Directions
  • Phone: (510) 675‑4010
  • Medicare: Accepts Medicare assignment
  • Hospital: Kaiser Foundation Hospital - San Leandro
  • Group practice: Permanente Medical Group Inc
  • Medical school: Michigan State University College Of Human Medicine · graduated 1995 (31 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Gurpreet K. Hazra, 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 Gurpreet K. Hazra accept Medicare assignment?
Yes. Medicare's clinician data says Gurpreet K. Hazra 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 Gurpreet K. Hazra see?
In 2024, CMS data shows 14 Original Medicare patients and 635 services for Gurpreet K. Hazra. This counts Original Medicare only and measures volume, not quality.
What is Gurpreet K. Hazra's NPI number?
1639257488. 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 Gurpreet K. Hazra, 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 patients14
Services billed to Medicare635
Different services or procedures15
Participating Medicare providerYes
Average age of these patients66

Hospitals where Gurpreet K. Hazra works

Medicare's Facility Affiliation Data lists Gurpreet K. Hazra at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Gurpreet K. Hazra is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Gurpreet K. Hazra as a member of this group (CMS data updated October 2, 2026).

  • Permanente Medical Group Inc10,996 clinicians in the group

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Union City

Clinicians with the same Medicare primary specialty in Union City, CA — not a recommendation.

All internal medicine doctors in Union City →

Other clinicians in Permanente Medical Group Inc

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

Clinician information

CredentialMD
Medical schoolMichigan State University College Of Human Medicine
Graduation year1995 (31 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1639257488
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. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians