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Internal Medicine

Jennifer Tinloy, DO

Works at hospitals in San Leandro, CA · California

Summary

Dr. Jennifer Tinloy, DO is an internal medicine doctor at 2500 Merced St, San Leandro, CA 94577. Phone: (510) 454-1000. Accepts Medicare assignment. In 2024, Jennifer Tinloy had 12 Original Medicare patients and 20 services. NPI 1609196187. 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: 2500 Merced St, San Leandro, CA 94577 · Directions
  • Phone: (510) 454‑1000
  • Medicare: Accepts Medicare assignment
  • Hospital: Kaiser Foundation Hospital - San Leandro
  • Group practice: Permanente Medical Group Inc
  • Medical school: New York College Of Osteo Medicine Of New York Institute Of Technology · graduated 2010 (16 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Jennifer Tinloy, 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 Jennifer Tinloy accept Medicare assignment?
Yes. Medicare's clinician data says Jennifer Tinloy 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 Jennifer Tinloy see?
In 2024, CMS data shows 12 Original Medicare patients and 20 services for Jennifer Tinloy. This counts Original Medicare only and measures volume, not quality.
What is Jennifer Tinloy's NPI number?
1609196187. 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 Jennifer Tinloy, 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 patients12
Services billed to Medicare20
Different services or procedures5
Participating Medicare providerYes
Average age of these patients69

Hospitals where Jennifer Tinloy works

Medicare's Facility Affiliation Data lists Jennifer Tinloy 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 Jennifer Tinloy is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Jennifer Tinloy 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 San Leandro

Clinicians with the same Medicare primary specialty in San Leandro, CA — not a recommendation.

All internal medicine doctors in San Leandro →

Other clinicians in Permanente Medical Group Inc

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

Clinician information

CredentialDO
Medical schoolNew York College Of Osteo Medicine Of New York Institute Of Technology
Graduation year2010 (16 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1609196187
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