Quick answers
- Which hospitals does Brian L. Chang work at?
- Medicare's official clinician data lists Brian L. Chang at 3 hospitals: Adventist Health Clearlake, Chinle Comprehensive Health Care Facility and Kaiser Foundation Hospital - Oakland/Richmond. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Brian L. Chang see patients?
- Medicare's clinician data lists 5 practice locations, including Saint Helena, CA, Clearlake, CA and Oakland, CA. Call before your visit to confirm the address.
- What is Brian L. Chang's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Brian L. Chang accept Medicare assignment?
- Yes. Medicare's clinician data says Brian L. 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 Brian L. Chang?
- (707) 963-3611, as listed in official Medicare / NPI Registry data.
- What is Brian L. Chang's NPI number?
- 1164840013. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Brian L. Chang works
Medicare's Facility Affiliation Data lists Brian L. Chang at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Adventist Health ClearlakeClearlake, CA · Critical Access Hospital · CCN 051317
- Chinle Comprehensive Health Care FacilityChinle, AZ · Acute Care Hospital · CCN 030084
- Kaiser Foundation Hospital - Oakland/RichmondOakland, CA · Acute Care Hospital · CCN 050075
Practice locations
Addresses where Brian L. Chang is enrolled with Medicare (CMS data updated 2026-10-02).
- 10 Woodland RdSaint Helena, CA 94574 (707) 963‑3611
- 15630 18th AveClearlake, CA 95422 (701) 994‑6486
- 275 W Macarthur BlvdOakland, CA 94611 (510) 752‑1000
- N 191 High School RdRock Point, AZ 86545 (928) 724‑3605
- Navajo Route 64 and 12Tsaile, AZ 86556 (928) 724‑3600
Group practices
Medicare enrollment lists Brian L. Chang as a member of these groups (CMS data updated 2026-10-02).
- Permanente Medical Group Inc10,996 clinicians in the group
- DHHS PHS Naihs Chinle Comprehensive Health Care Facility152 clinicians in the group
- Pacific Redwood Medical Group Inc58 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Saint Helena
Clinicians with the same Medicare primary specialty in Saint Helena, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Warren Alpert Medical School Of Brown University |
| Graduation year | 2014 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1164840013 |
| 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