Frank Hsu, M.D.
NPI 1295800365 · Endocrinology, Diabetes & Metabolism Physician · Hayward, CA
Frank Hsu, M.D. is a Endocrinology, Diabetes & Metabolism Physician provider in Hayward, CA (NPI 1295800365).
Provider details
- NPI number
- 1295800365
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- C39702 (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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-22
- Last updated
- 2007-07-08
Frequently asked questions
- What is Frank Hsu's NPI number?
- Frank Hsu's National Provider Identifier (NPI) is 1295800365, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Frank Hsu's specialty?
- Frank Hsu is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Frank Hsu located?
- Frank Hsu's practice location on file with NPPES is 21297 Foothill Blvd Ste 102, Hayward, CA 94541-1554.
- What is Frank Hsu's phone number?
- The practice phone number listed in the NPPES registry for Frank Hsu is (510) 538-4870.
- Is Frank Hsu's NPI active?
- Yes — Frank Hsu's NPI (1295800365) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.