Quick answers
- Which hospitals does Kay-Won Chang work at?
- Medicare's official clinician data lists Kay-Won Chang at 2 hospitals: Eden Medical Center and Washington Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Kay-Won Chang see patients?
- Medicare's clinician data lists 8 practice locations, including Milpitas, CA, Fremont, CA and Los Altos, CA. Call before your visit to confirm the address.
- What is Kay-Won Chang's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty, and also Internal Medicine.
- Does Kay-Won Chang accept Medicare assignment?
- Yes. Medicare's clinician data says Kay-Won Chang 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.
- Does Kay-Won Chang offer telehealth?
- Medicare's clinician data says Kay-Won Chang offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Kay-Won Chang?
- (800) 478-8837, as listed in official Medicare / NPI Registry data.
- What is Kay-Won Chang's NPI number?
- 1205213410. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Kay-Won Chang works
Medicare's Facility Affiliation Data lists Kay-Won Chang at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Eden Medical CenterCastro Valley, CA · Acute Care Hospital · CCN 050488
- Washington HospitalFremont, CA · Acute Care Hospital · CCN 050195
Practice locations
Addresses where Kay-Won Chang is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 8; the Medicare profile lists all.
- 100 N Milpitas BlvdMilpitas, CA 95035 (800) 478‑8837
- 2000 Mowry AveFremont, CA 94538 (510) 797‑1111
- 3200 Kearney StFremont, CA 94538 (510) 490‑1222
- 370 Distel CirLos Altos, CA 94022 (650) 254‑5200
- 4050 Dublin BlvdDublin, CA 94568 (925) 875‑6100
Group practices
Medicare enrollment lists Kay-Won Chang as a member of these groups (CMS data updated 2026-10-02).
- Sutter Bay Medical Foundation3,829 clinicians in the group
- Washington Township Hospital District28 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in California →
Other cardiologists in Milpitas
Clinicians with the same Medicare primary specialty in Milpitas, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Texas Medical School At Houston |
| Graduation year | 2015 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1205213410 |
| 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