Quick answers
- Which hospitals does James W. Lyon work at?
- Medicare's official clinician data lists James W. Lyon at 3 hospitals: Sharp Chula Vista Medical Center, Sharp Coronado Hospital and HLTHCR Ctr and Sharp Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does James W. Lyon see patients?
- Medicare's clinician data lists 5 practice locations, including Coronado, CA, Chula Vista, CA and San Diego, CA. Call before your visit to confirm the address.
- What is James W. Lyon's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty, and also Interventional Radiology.
- Does James W. Lyon accept Medicare assignment?
- Yes. Medicare's clinician data says James W. Lyon 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 James W. Lyon?
- (619) 522-3721, as listed in official Medicare / NPI Registry data.
- What is James W. Lyon's NPI number?
- 1689647331. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where James W. Lyon works
Medicare's Facility Affiliation Data lists James W. Lyon at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Sharp Chula Vista Medical CenterChula Vista, CA · Acute Care Hospital · CCN 050222
- Sharp Coronado Hospital and HLTHCR CtrCoronado, CA · Acute Care Hospital · CCN 050234
- Sharp Memorial HospitalSan Diego, CA · Acute Care Hospital · CCN 050100
Practice locations
Addresses where James W. Lyon is enrolled with Medicare (CMS data updated 2026-10-02).
- 250 Prospect PlCoronado, CA 92118 (619) 522‑3721
- 751 Med Ctr CtChula Vista, CA 91911 (619) 482‑3639
- 765 Medical Ctr CtChula Vista, CA 91911 (619) 397‑6577
- 7901 Frost StSan Diego, CA 92123
- 7910 Frost St, Suite 100San Diego, CA 92123 (858) 634‑5900
Group practices
Medicare enrollment lists James W. Lyon as a member of these groups (CMS data updated 2026-10-02).
- San Diego Diagnostic Radiology Medical Group Inc47 clinicians in the group
- San Diego Imaging-Chula Vista LLC43 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
- Interventional Radiologyalso
Other radiologists in Coronado
Clinicians with the same Medicare primary specialty in Coronado, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Indiana University School Of Medicine |
| Graduation year | 1979 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1689647331 |
| 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