Tsz Mei Fong, MD
NPI 1235281031 · Internal Medicine Physician · Fremont, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tsz Mei Fong, MD is a Internal Medicine Physician provider in Fremont, CA (NPI 1235281031).
Provider details
- NPI number
- 1235281031
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A56428 (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
19 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 · 107 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 637 | 200 |
| Losartan Potassium | 420 | 143 |
| Amlodipine Besylate | 370 | 123 |
| Levothyroxine Sodium | 277 | 82 |
| Lisinopril | 204 | 67 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 168 | 42 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-18
- Last updated
- 2021-12-13
Frequently asked questions
- What is Tsz Mei Fong's NPI number?
- Tsz Mei Fong's National Provider Identifier (NPI) is 1235281031, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tsz Mei Fong's specialty?
- Tsz Mei Fong is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Tsz Mei Fong located?
- Tsz Mei Fong's practice location on file with NPPES is 39400 Paseo Padre Pkwy, Fremont, CA 94538-2310.
- What is Tsz Mei Fong's phone number?
- The practice phone number listed in the NPPES registry for Tsz Mei Fong is (510) 795-3000.
- Does Tsz Mei Fong accept Medicare?
- Tsz Mei Fong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tsz Mei Fong's NPI active?
- Yes — Tsz Mei Fong's NPI (1235281031) is active in the NPPES registry as of the last update on 2021-12-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.