Quick answers
- Which hospitals does William Wang work at?
- Medicare's official clinician data lists William Wang at 2 hospitals: PIH Health Downey Hospital and PIH Health Hospital-Whittier. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William Wang see patients?
- Medicare's clinician data lists 3 practice locations, including La Mirada, CA and Whittier, CA. Call before your visit to confirm the address.
- What is William Wang's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does William Wang accept Medicare assignment?
- Yes. Medicare's clinician data says William Wang 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 William Wang offer telehealth?
- Medicare's clinician data says William Wang offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for William Wang?
- (562) 903-7339, as listed in official Medicare / NPI Registry data.
- What is William Wang's NPI number?
- 1508213646. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where William Wang works
Medicare's Facility Affiliation Data lists William Wang at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- PIH Health Downey HospitalDowney, CA · Acute Care Hospital · CCN 050393
- PIH Health Hospital-WhittierWhittier, CA · Acute Care Hospital · CCN 050169
Practice locations
Addresses where William Wang is enrolled with Medicare (CMS data updated 2026-10-02).
- 12675 La Mirada Blvd, Suite 201and401La Mirada, CA 90638 (562) 903‑7339
- 15725 Whittier BlvdWhittier, CA 90603 (562) 947‑1669
- 6557 Greenleaf AveWhittier, CA 90601
Group practices
Medicare enrollment lists William Wang as a member of this group (CMS data updated 2026-10-02).
- PIH Health Physicians622 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in La Mirada
Clinicians with the same Medicare primary specialty in La Mirada, CA — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | At Still Un Of Hlth Sciences, Col Of Osteo Med, Mesa |
| Graduation year | 2016 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1508213646 |
| 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