Quick answers
- Where does Gerald U. Lim see patients?
- Medicare's clinician data lists 4 practice locations, including Garden Grove, CA, Santa Ana, CA and Anaheim, CA. Call before your visit to confirm the address.
- What is Gerald U. Lim's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Gerald U. Lim accept Medicare assignment?
- Yes. Medicare's clinician data says Gerald U. Lim 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 Gerald U. Lim?
- (888) 988-2800, as listed in official Medicare / NPI Registry data.
- What is Gerald U. Lim's NPI number?
- 1427091958. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Gerald U. Lim is enrolled with Medicare (CMS data updated 2026-10-02).
- 12100 Euclid StGarden Grove, CA 92840 (888) 988‑2800
- 1900 E 4th StSanta Ana, CA 92705 (714) 967‑4760
- 3401 S Harbor BlvdSanta Ana, CA 92704 (888) 988‑2800
- 5475 E La Palma AveAnaheim, CA 92807 (714) 279‑6088
Group practices
Medicare enrollment lists Gerald U. Lim as a member of this group (CMS data updated 2026-10-02).
- Southern California Permanente Medical Group11,293 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Garden Grove
Clinicians with the same Medicare primary specialty in Garden Grove, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1996 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1427091958 |
| 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
- 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