Thomas Chen
NPI 1225453830 · Family Medicine Physician · Fremont, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Chen is a Family Medicine Physician provider in Fremont, CA (NPI 1225453830).
Provider details
- NPI number
- 1225453830
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- 20A15700 (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
12 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 · 24 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 117 | 44 |
| Amlodipine Besylate | 62 | 23 |
| Losartan Potassium | 54 | 14 |
| Metoprolol Succinate | 35 | — |
| Metformin Hclbrand: Metformin Hcl Er | 29 | — |
| Empagliflozinbrand: Jardiance | 26 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-02-19
- Last updated
- 2017-12-11
Frequently asked questions
- What is Thomas Chen's NPI number?
- Thomas Chen's National Provider Identifier (NPI) is 1225453830, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Chen's specialty?
- Thomas Chen is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Chen located?
- Thomas Chen's practice location on file with NPPES is 39400 Paseo Padre Pkwy, Fremont, CA 94538-2310.
- What is Thomas Chen's phone number?
- The practice phone number listed in the NPPES registry for Thomas Chen is (510) 460-5726.
- Does Thomas Chen accept Medicare?
- Thomas Chen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Chen's NPI active?
- Yes — Thomas Chen's NPI (1225453830) is active in the NPPES registry as of the last update on 2017-12-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.