Quick answers
- Which hospitals does James C. Lilley work at?
- Medicare's official clinician data lists James C. Lilley at 3 hospitals: Casa Colina Hospital, Pomona Valley Hospital Medical Center and San Antonio Regional Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does James C. Lilley see patients?
- Medicare's clinician data lists 3 practice locations, including Pomona, CA and Rancho Cucamonga, CA. Call before your visit to confirm the address.
- What is James C. Lilley's specialty?
- Medicare lists Orthopedic Surgery as the primary specialty, and also Hand Surgery.
- Does James C. Lilley accept Medicare assignment?
- Medicare's clinician data says James C. Lilley 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 James C. Lilley?
- (909) 593-7437, as listed in official Medicare / NPI Registry data.
- What is James C. Lilley's NPI number?
- 1982642153. 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 C. Lilley works
Medicare's Facility Affiliation Data lists James C. Lilley at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Casa Colina HospitalPomona, CA · Acute Care Hospital · CCN 050782
- Pomona Valley Hospital Medical CenterPomona, CA · Acute Care Hospital · CCN 050231
- San Antonio Regional HospitalUpland, CA · Acute Care Hospital · CCN 050099
Practice locations
Addresses where James C. Lilley is enrolled with Medicare (CMS data updated 2026-10-02).
- 2776 N Garey AvePomona, CA 91767
- 7777 A Milliken Ave, Suite 101Rancho Cucamonga, CA 91730 (909) 593‑7437
- 900 E Harrison AvePomona, CA 91767 (909) 624‑5061
Group practices
Medicare enrollment lists James C. Lilley as a member of these groups (CMS data updated 2026-10-02).
- Congregational Homes17 clinicians in the group
- Garey Orthopedic Medical Group7 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
- Hand Surgeryalso
Other orthopedic surgeons in Pomona
Clinicians with the same Medicare primary specialty in Pomona, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Southern California Keck School Of Medicine |
| Graduation year | 1993 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1982642153 |
| 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