Quick answers
- Which hospitals does William C. Koonce work at?
- Medicare's official clinician data lists William C. Koonce at 3 hospitals: Goleta Valley Cottage Hospital, Santa Barbara Cottage Hospital and Santa Ynez Valley Cottage Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William C. Koonce see patients?
- Medicare's clinician data lists 2 practice locations, including Santa Barbara, CA. Call before your visit to confirm the address.
- What is William C. Koonce's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Diagnostic Radiology.
- Does William C. Koonce accept Medicare assignment?
- Medicare's clinician data says William C. Koonce may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for William C. Koonce?
- (805) 682-7200, as listed in official Medicare / NPI Registry data.
- What is William C. Koonce's NPI number?
- 1124010095. 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 C. Koonce works
Medicare's Facility Affiliation Data lists William C. Koonce 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
- Santa Barbara Cottage HospitalSanta Barbara, CA · Acute Care Hospital · CCN 050396
- Santa Ynez Valley Cottage HospitalSolvang, CA · Critical Access Hospital · CCN 051331
Practice locations
Addresses where William C. Koonce is enrolled with Medicare (CMS data updated 2026-10-02).
- 219 Nogales Ave, Suite BSanta Barbara, CA 93105 (805) 682‑7200
- 300 Hot Springs RdSanta Barbara, CA 93108
Specialties
- Internal Medicineprimary
- Diagnostic Radiologyalso
Other internal medicine doctors in Santa Barbara
Clinicians with the same Medicare primary specialty in Santa Barbara, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, Irvine, California College Of Medicine |
| Graduation year | 1985 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1124010095 |
| 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