Quick answers
- Where does Debbie Chang see patients?
- Medicare's clinician data lists 2 practice locations, including Ontario, CA and San Francisco, CA. Call before your visit to confirm the address.
- What is Debbie Chang's specialty?
- Medicare lists Psychiatry as the primary specialty.
- Does Debbie Chang accept Medicare assignment?
- Yes. Medicare's clinician data says Debbie 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.
- What is the phone number for Debbie Chang?
- (909) 450-8020, as listed in official Medicare / NPI Registry data.
- What is Debbie Chang's NPI number?
- 1508212499. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Debbie Chang is enrolled with Medicare (CMS data updated 2026-10-02).
- 3200 E Guasti Rd, Suite 100Ontario, CA 91761 (909) 450‑8020
- 580 California StSan Francisco, CA 94104 (415) 480‑7362
Group practices
Medicare enrollment lists Debbie Chang as a member of this group (CMS data updated 2026-10-02).
- Savant Care Inc7 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in Ontario
Clinicians with the same Medicare primary specialty in Ontario, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Creighton University School Of Medicine |
| Graduation year | 2016 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1508212499 |
| 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
- 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