Quick answers
- Which hospitals does John C. Thompson work at?
- Medicare's official clinician data lists John C. Thompson at 3 hospitals: Grossmont Hospital, Sharp Chula Vista Medical Center and UC San Diego Health Hillcrest - Hillcrest Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John C. Thompson see patients?
- Medicare's clinician data lists 4 practice locations, including La Mesa, CA and San Diego, CA. Call before your visit to confirm the address.
- What is John C. Thompson's specialty?
- Medicare lists Nephrology as the primary specialty, and also Internal Medicine.
- Does John C. Thompson accept Medicare assignment?
- Yes. Medicare's clinician data says John C. Thompson 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 C. Thompson offer telehealth?
- Medicare's clinician data says John C. Thompson offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for John C. Thompson?
- (619) 740-6000, as listed in official Medicare / NPI Registry data.
- What is John C. Thompson's NPI number?
- 1770663890. 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 C. Thompson works
Medicare's Facility Affiliation Data lists John C. Thompson at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Grossmont HospitalLa Mesa, CA · Acute Care Hospital · CCN 050026
- Sharp Chula Vista Medical CenterChula Vista, CA · Acute Care Hospital · CCN 050222
- UC San Diego Health Hillcrest - Hillcrest Medical CenterSan Diego, CA · Acute Care Hospital · CCN 050025
Practice locations
Addresses where John C. Thompson is enrolled with Medicare (CMS data updated 2026-10-02).
- 5555 Grossmont Ctr DrLa Mesa, CA 91942 (619) 740‑6000
- 7901 Frost StSan Diego, CA 92123 (858) 939‑3400
- 8851 Ctr Dr, Suite 505La Mesa, CA 91942 (619) 461‑3880
- 8885 Rio San Diego Dr, Suite 212San Diego, CA 92108 (619) 299‑2350
Group practices
Medicare enrollment lists John C. Thompson as a member of these groups (CMS data updated 2026-10-02).
- Emergency and Acute Care Medical Corporation422 clinicians in the group
- Balboa Nephrology Medical Group Inc76 clinicians in the group
Specialties
- Nephrologyprimary
- Internal Medicinealso
Other nephrologists in La Mesa
Clinicians with the same Medicare primary specialty in La Mesa, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Kansas School Of Med (kc/wich/sal) |
| Graduation year | 1992 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1770663890 |
| 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