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Internal Medicine

Allen K. Tong, MD

Works at hospitals in Burlingame, CA · San Mateo, CA · California

Summary

Dr. Allen K. Tong, MD is an internal medicine doctor at 123 S San Mateo Dr, San Mateo, CA 94401. Phone: (650) 343-4200. Accepts Medicare assignment. NPI 1841467701. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 123 S San Mateo Dr, San Mateo, CA 94401 · Directions (5 more locations)
  • Phone: (650) 343‑4200
  • Medicare: Accepts Medicare assignment
  • Hospitals: Peninsula Medical Center, San Mateo Medical Center
  • Group practice: Sutter Bay Medical Foundation
  • Medical school: Geisel School Of Medicine At Dartmouth · graduated 2007 (19 years since medical school)
  • Gender (as listed): Male
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Allen K. Tong, 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 Allen K. Tong accept Medicare assignment?
Yes. Medicare's clinician data says Allen K. Tong 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.
What is Allen K. Tong's NPI number?
1841467701. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Allen K. Tong works

Medicare's Facility Affiliation Data lists Allen K. Tong 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.

  • Peninsula Medical CenterBurlingame, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050007
  • San Mateo Medical CenterSan Mateo, CA · Acute Care Hospital · Emergency services: listed by Medicare · CCN 050113

Practice locations

Addresses where Allen K. Tong is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.

Group practices

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

  • Sutter Bay Medical Foundation3,829 clinicians in the group

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in San Mateo

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

All internal medicine doctors in San Mateo →

Other clinicians in Sutter Bay Medical Foundation

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

Clinician information

CredentialMD
Medical schoolGeisel School Of Medicine At Dartmouth
Graduation year2007 (19 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1841467701
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. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  5. Medicare Care Compare — official Medicare tool to look up clinicians