Anselm Lam, M.D.
NPI 1841386141 · Family Medicine Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Anselm Lam, M.D. is a Family Medicine Physician provider in San Francisco, CA (NPI 1841386141).
Provider details
- NPI number
- 1841386141
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 19516 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,455 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 342 | $6 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 278 | $13 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 249 | $10 |
| Hemoglobin A1c Level83036 | 236 | $9 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test85027 | 226 | $6 |
| Urine Microalbumin (protein) Level82043 | 225 | $6 |
| Creatinine Level to Test for Kidney Function Or Muscle Injury |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 138 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 835 | 253 |
| Metoprolol Succinate | 519 | 149 |
| Amlodipine Besylate | 470 | 133 |
| Losartan Potassium | 455 | 129 |
| Omeprazole | 345 | 117 |
| Tamsulosin Hcl | 303 | 99 |
| Metformin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-05
- Last updated
- 2017-02-28
Frequently asked questions
- What is Anselm Lam's NPI number?
- Anselm Lam's National Provider Identifier (NPI) is 1841386141, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Anselm Lam's specialty?
- Anselm Lam is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Anselm Lam located?
- Anselm Lam's practice location on file with NPPES is 1520 Stockton St, San Francisco, CA 94133-3354.
- What is Anselm Lam's phone number?
- The practice phone number listed in the NPPES registry for Anselm Lam is (415) 391-9686.
- Does Anselm Lam accept Medicare?
- Anselm Lam is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Anselm Lam's NPI active?
- Yes — Anselm Lam's NPI (1841386141) is active in the NPPES registry as of the last update on 2017-02-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.