Thomas S.lam MD. a Professional Corporation
NPI 1336309350 · Gastroenterology Physician · Alhambra, CA
Thomas S.lam MD. a Professional Corporation is a Gastroenterology Physician organization in Alhambra, CA (NPI 1336309350).
Provider details
- NPI number
- 1336309350
- Entity type
- Organization
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Thomas Lam, Director(626) 943-6274
- License
- A44280 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-06-12
- Last updated
- 2025-06-17
- Certified
- 2025-06-17
Frequently asked questions
- What is Thomas S.lam MD. a Professional Corporation's NPI number?
- Thomas S.lam MD. a Professional Corporation's National Provider Identifier (NPI) is 1336309350, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Thomas S.lam MD. a Professional Corporation?
- Thomas S.lam MD. a Professional Corporation is classified in the NPPES registry as Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas S.lam MD. a Professional Corporation located?
- Thomas S.lam MD. a Professional Corporation's practice location on file with NPPES is 333 S Garfield Ave Ste a, Alhambra, CA 91801-3895.
- What is Thomas S.lam MD. a Professional Corporation's phone number?
- The practice phone number listed in the NPPES registry for Thomas S.lam MD. a Professional Corporation is (626) 284-1997.
- Who is the authorized official for Thomas S.lam MD. a Professional Corporation?
- The authorized official listed on Thomas S.lam MD. a Professional Corporation's NPPES record is Thomas Lam, Director. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Thomas S.lam MD. a Professional Corporation's NPI active?
- Yes — Thomas S.lam MD. a Professional Corporation's NPI (1336309350) is active in the NPPES registry as of the last update on 2025-06-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.