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Gastroenterology

Thomas S. Lam, MD

Sees patients in Alhambra, CA · California

Summary

Thomas S. Lam, MD (Gastroenterology) is enrolled with Medicare at 1 practice location in Alhambra, CA. NPI 1437185295. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

Call(626) 282‑0282 NPI Registry record Medicare profile

From official Medicare data

This page shows what Medicare's official clinician data says about Thomas S. Lam, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

1Practice location
GastroenterologyPrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
45Years since medical school (graduated 1981)
MaleGender (as listed)
AMG a Professional Medical CorporationGroup practice

Quick answers

Where does Thomas S. Lam see patients?
Medicare's clinician data lists 1 practice location in Alhambra, CA. Call before your visit to confirm the address.
What is Thomas S. Lam's specialty?
Medicare lists Gastroenterology as the primary specialty, and also Internal Medicine.
Does Thomas S. Lam accept Medicare assignment?
Yes. Medicare's clinician data says Thomas S. Lam accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
Does Thomas S. Lam offer telehealth?
Medicare's clinician data says Thomas S. Lam offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Thomas S. Lam?
(626) 282-0282, as listed in official Medicare / NPI Registry data.
What is Thomas S. Lam's NPI number?
1437185295. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where Thomas S. Lam is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Thomas S. Lam as a member of this group (CMS data updated 2026-10-02).

  • AMG a Professional Medical Corporation20 clinicians in the group

Specialties

Find other Gastroenterology doctors in California →

Other gastroenterologists in Alhambra

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

All gastroenterologists in Alhambra →

Clinician information

CredentialMD
Graduation year1981
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1437185295
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 2026-10-02, retrieved 2026-10-29
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians