Sinyun Lam, MD
NPI 1285213025 · Family Medicine Physician · Antioch, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sinyun Lam, MD is a Family Medicine Physician provider in Antioch, CA (NPI 1285213025).
Provider details
- NPI number
- 1285213025
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- A200015 (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
5 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 30 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 58 | 16 |
| Atorvastatin Calcium | 53 | 18 |
| Lisinopril | 40 | 15 |
| Meloxicam | 33 | — |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 31 | 13 |
| Furosemide | 30 | — |
| Omeprazole | 30 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-04-07
- Last updated
- 2025-05-05
- Certified
- 2025-05-05
Frequently asked questions
- What is Sinyun Lam's NPI number?
- Sinyun Lam's National Provider Identifier (NPI) is 1285213025, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sinyun Lam's specialty?
- Sinyun Lam is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Sinyun Lam located?
- Sinyun Lam's practice location on file with NPPES is 3400 Delta Fair Blvd, Antioch, CA 94509-4004.
- What is Sinyun Lam's phone number?
- The practice phone number listed in the NPPES registry for Sinyun Lam is (925) 779-5000.
- Does Sinyun Lam accept Medicare?
- Sinyun Lam is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sinyun Lam's NPI active?
- Yes — Sinyun Lam's NPI (1285213025) is active in the NPPES registry as of the last update on 2025-05-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.