Quick answers
- Which hospitals does Htay Win work at?
- Medicare's official clinician data lists Htay Win at 2 hospitals: St Rose Hospital and Washington Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Htay Win see patients?
- Medicare's clinician data lists 2 practice locations, including Hayward, CA and Fremont, CA. Call before your visit to confirm the address.
- What is Htay Win's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Htay Win accept Medicare assignment?
- Yes. Medicare's clinician data says Htay Win accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Htay Win?
- (510) 793-1958, as listed in official Medicare / NPI Registry data.
- What is Htay Win's NPI number?
- 1881642155. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Htay Win works
Medicare's Facility Affiliation Data lists Htay Win at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- St Rose HospitalHayward, CA · Acute Care Hospital · CCN 050002
- Washington HospitalFremont, CA · Acute Care Hospital · CCN 050195
Practice locations
Addresses where Htay Win is enrolled with Medicare (CMS data updated 2026-10-02).
- 27001 Calaroga Ave, Suite 4Hayward, CA 94545 (510) 793‑1958
- 3458 Mowry AveFremont, CA 94538 (510) 793‑1958
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Hayward
Clinicians with the same Medicare primary specialty in Hayward, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1986 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1881642155 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians