1. Home
  2. Directory
  3. California
  4. Hayward
  5. Internal Medicine
  6. NPI Profile

DR. FRANK S.F. HSU M.D.
NPI 1295800365
Internal Medicine - Endocrinology, Diabetes & Metabolism in Hayward, CA

Active since November 22, 2006
21297 FOOTHILL BLVD STE 102, HAYWARD, CA 94541(510) 538-4870(510) 538-6475 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Frank S.f. Hsu M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. FRANK S.F. HSU M.D. (NPI 1295800365) is an individual endocrinology, diabetes & metabolism provider in Hayward, California, licensed in California (C39702) and active in the NPI registry since November 2006.

NPPES Registry Identity

NPI1295800365
Entity TypeIndividualMale
Primary Taxonomy207RE0101X
Provider Legal NameDR. FRANK S.F. HSUCredential: M.D.
Location Address21297 FOOTHILL BLVD STE 102Hayward, CA 94541-1554
Mailing Address21297 Foothill Blvd Ste 102Hayward, CA 94541-1554 · (510) 538-4870 · Fax (510) 538-6475
Phone(510) 538-4870
Fax(510) 538-6475
Sole ProprietorYes
Enumeration DateNovember 22, 2006
Last NPPES UpdateJuly 8, 2007
✔ NPI 1295800365 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
License✔ Licensed in CA · C39702
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
21297 FOOTHILL BLVD STE 102, Hayward, CA 94541
Open in Google Maps ↗

Other Identifiers 2

Medicare UPINA37196
Medicare ID-Type Unspecified00C397020

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

FRANK S.F. HSU, M.D., A PROFESSIONAL CORPORATION
Clinic/Center (Medical Specialty)
21297 FOOTHILL BLVD STE 102
HAYWARD, CA 94541
Alameda County (510) 538-4870
FRANK S.F. HSU, M.D., A PROFESSIONAL CORPORATION
Internal Medicine (Endocrinology, Diabetes & Metabolism)
21297 FOOTHILL BLVD STE 102
HAYWARD, CA 94541
Alameda County (510) 538-4870

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Frank Hsu's NPI number?

The NPI number for Frank Hsu is 1295800365. It was assigned to this individual provider in the NPPES registry on November 22, 2006.

Where is Frank Hsu located?

Frank Hsu practices at 21297 Foothill Blvd Ste 102, Hayward, CA 94541. The listed phone number is (510) 538-4870.

What is Frank Hsu's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

When was this NPI record last updated?

The NPPES record for Frank Hsu was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.