Robert Lam, M.D.
NPI 1487210670 · Gastroenterology Physician · Santa Rosa, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Lam, M.D. is a Gastroenterology Physician provider in Santa Rosa, CA (NPI 1487210670).
Provider details
- NPI number
- 1487210670
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 yrs in NPPES registry
- Profile completeness38% of score
83% 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 3 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Esomeprazole Magnesium | 20 |
| Famotidine | 15 |
| Omeprazole | 14 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-05-14
- Last updated
- 2025-06-10
- Certified
- 2025-06-10
Frequently asked questions
- What is Robert Lam's NPI number?
- Robert Lam's National Provider Identifier (NPI) is 1487210670, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Lam's specialty?
- Robert Lam is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Lam located?
- Robert Lam's practice location on file with NPPES is 3975 Old Redwood Hwy Ste 152, Santa Rosa, CA 95403-1719.
- What is Robert Lam's phone number?
- The practice phone number listed in the NPPES registry for Robert Lam is (707) 566-5875.
- Does Robert Lam accept Medicare?
- Robert Lam is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Lam's NPI active?
- Yes — Robert Lam's NPI (1487210670) is active in the NPPES registry as of the last update on 2025-06-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.