Quick answers
- Which hospitals does John S. Chorba work at?
- Medicare's official clinician data lists John S. Chorba at 5 hospitals: Adventist Health Sonora, Alameda Hospital, Banner - University Medical Center Tucson Campus, Banner-University Medical Center South Campus and Highland Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John S. Chorba see patients?
- Medicare's clinician data lists 7 practice locations, including Sonora, CA, San Leandro, CA and Oakland, CA. Call before your visit to confirm the address.
- What is John S. Chorba's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty, and also Internal Medicine.
- Does John S. Chorba accept Medicare assignment?
- Yes. Medicare's clinician data says John S. Chorba 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 John S. Chorba offer telehealth?
- Medicare's clinician data says John S. Chorba offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for John S. Chorba?
- (209) 536-5000, as listed in official Medicare / NPI Registry data.
- What is John S. Chorba's NPI number?
- 1538364138. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John S. Chorba works
Medicare's Facility Affiliation Data lists John S. Chorba at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Adventist Health SonoraSonora, CA · Acute Care Hospital · CCN 050335
- Alameda HospitalAlameda, CA · Acute Care Hospital · CCN 050211
- Banner - University Medical Center Tucson CampusTucson, AZ · Acute Care Hospital · CCN 030064
- Banner-University Medical Center South CampusTucson, AZ · Acute Care Hospital · CCN 030111
- Highland HospitalOakland, CA · Acute Care Hospital · CCN 050320
Practice locations
Addresses where John S. Chorba is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 7; the Medicare profile lists all.
- 1000 Greenley RdSonora, CA 95370 (209) 536‑5000
- 13855 E 14th StSan Leandro, CA 94578 (510) 357‑6500
- 1411 E 31st StOakland, CA 94602 (510) 437‑4800
- 193 Fairview LnSonora, CA 95370 (209) 536‑5100
- 3838 N Campbell Ave, Bldg 2Tucson, AZ 85719 (520) 694‑8888
Group practices
Medicare enrollment lists John S. Chorba as a member of these groups (CMS data updated 2026-10-02).
- Banner-University Medical Group1,072 clinicians in the group
- Alameda Health System601 clinicians in the group
- Sonora Community Hospital133 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in California →
Other cardiologists in Sonora
Clinicians with the same Medicare primary specialty in Sonora, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Harvard Medical School |
| Graduation year | 2007 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1538364138 |
| 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