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Internal Medicine

Namphuong T. Tran, MD

Works at hospitals in Burlingame, CA · Stanford, CA · California

Summary

Dr. Namphuong T. Tran, MD is an internal medicine doctor at 123 S San Mateo Dr, San Mateo, CA 94401. Phone: (650) 343-4200. Accepts Medicare assignment. In 2024, Namphuong T. Tran had 237 Original Medicare patients and 824 services. NPI 1598110686. 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: 123 S San Mateo Dr, San Mateo, CA 94401 · Directions (3 more locations)
  • Phone: (650) 343‑4200
  • Medicare: Accepts Medicare assignment
  • Hospitals: Peninsula Medical Center, Stanford Health Care
  • Group practice: Sutter Bay Medical Foundation (+1 more)
  • Medical school: Drexel University College Of Medicine · graduated 2016 (10 years since medical school)
  • Gender (as listed): Female
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Namphuong T. Tran, 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 Namphuong T. Tran accept Medicare assignment?
Yes. Medicare's clinician data says Namphuong T. Tran 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 Namphuong T. Tran see?
In 2024, CMS data shows 237 Original Medicare patients and 824 services for Namphuong T. Tran. This counts Original Medicare only and measures volume, not quality.
What is Namphuong T. Tran's NPI number?
1598110686. 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 Namphuong T. Tran, 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 patients237
Services billed to Medicare824
Different services or procedures33
Participating Medicare providerYes
Average age of these patients76

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)203 services
  2. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)150 services
  3. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)124 services
  4. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)99 services
  5. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)40 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 pressure59%
  • Osteoporosis37%
  • Arthritis35%
  • Chronic kidney disease22%
  • Diabetes17%

Hospitals where Namphuong T. Tran works

Medicare's Facility Affiliation Data lists Namphuong T. Tran 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
  • Stanford Health CareStanford, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050441

Practice locations

Addresses where Namphuong T. Tran is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Namphuong T. Tran as a member of these groups (CMS data updated October 2, 2026).

  • Sutter Bay Medical Foundation3,829 clinicians in the group
  • Stanford Health Care3,122 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 schoolDrexel University College Of Medicine
Graduation year2016 (10 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1598110686
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