Quick answers
- Which hospitals does Si Chen work at?
- Medicare's official clinician data lists Si Chen at 5 hospitals: Goleta Valley Cottage Hospital, Lompoc Valley Medical Center, Santa Barbara Cottage Hospital, Santa Ynez Valley Cottage Hospital and St Johns Regional Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Si Chen see patients?
- Medicare's clinician data lists 5 practice locations, including Glendale, CA, Oxnard, CA and Thousand Oaks, CA. Call before your visit to confirm the address.
- What is Si Chen's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Si Chen accept Medicare assignment?
- Yes. Medicare's clinician data says Si Chen 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 Si Chen?
- (818) 409-8000, as listed in official Medicare / NPI Registry data.
- What is Si Chen's NPI number?
- 1467794180. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Si Chen works
Medicare's Facility Affiliation Data lists Si Chen at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Goleta Valley Cottage HospitalSanta Barbara, CA · Acute Care Hospital · CCN 050357
- Lompoc Valley Medical CenterLompoc, CA · Acute Care Hospital · CCN 050110
- Santa Barbara Cottage HospitalSanta Barbara, CA · Acute Care Hospital · CCN 050396
- Santa Ynez Valley Cottage HospitalSolvang, CA · Critical Access Hospital · CCN 051331
- St Johns Regional Medical CenterOxnard, CA · Acute Care Hospital · CCN 050082
Practice locations
Addresses where Si Chen is enrolled with Medicare (CMS data updated 2026-10-02).
- 1509 Wilson TerGlendale, CA 91206 (818) 409‑8000
- 1600 N Rose AveOxnard, CA 93030 (805) 988‑2500
- 215 W Janss RdThousand Oaks, CA 91360 (805) 497‑2727
- 2309 Antonio AveCamarillo, CA 93010 (805) 389‑5800
- 5333 Hollister Ave, Suite 250Goleta, CA 93111 (805) 879‑4240
Group practices
Medicare enrollment lists Si Chen as a member of these groups (CMS data updated 2026-10-02).
- Galen Inpatient Physicians PC1,077 clinicians in the group
- Cottage Medical Foundation93 clinicians in the group
- Advantage Hospitalists Inc9 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Glendale
Clinicians with the same Medicare primary specialty in Glendale, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2012 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1467794180 |
| 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