NPPES file of Aug 9, 2026

Gerald Lim, M.D.

Family Medicine Physician · Garden Grove, CA

Gerald Lim, M.D. is a family medicine physician with a practice address in Garden Grove, California, and NPI 1427091958, issued on Jun 13, 2006. Check the license (California A90080, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1427091958
Name
Gerald Lim
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
A90080 CA
Self-reported in NPPES; status is on the state search
Practice location
12100 Euclid St, Garden Grove, CA 92840
Phone
(714) 741-3555
Enumerated
Jun 13, 2006
Record last updated
Nov 29, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20050502001323); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 12100 Euclid St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Maydole Aldalur, NURSE PRACTITIONERPediatric Nurse Practitioner1811317001
  2. Christine AtallaPharmacist1154860070
  3. Yvonne Bach, M.D.Pediatrics Physician1396967337
  4. Ashley Brown, M.D.Dermatology Physician1245591783
  5. Tuan Cao, PHARM.DPharmacist1679011571
  6. Jennifer Chan, D.O.Family Medicine Physician1821433830

Verify Gerald Lim in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A90080
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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11% more Medicare Part D claims than the average family medicine physician in 2024

3,935 Medicare Part D claims for 1,185 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 231 claims were for opioids.

  1. Gerald Lim3,935
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium291 claims
  2. Amlodipine Besylate160 claims
  3. Losartan Potassium149 claims
  4. Lisinopril126 claims
  5. Hydrocodone-Acetaminophen120 claims
  6. Rosuvastatin Calcium117 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through one group practice

  1. Southern California Permanente Medical GroupGarden Grove, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Gerald Lim among 17,133 family medicine physician records in California

Gerald Lim, M.D. is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.

  • NPI issued2006 · 6% of these records are older, 59% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated1996 · median 2005 among the 10,652 with a school on file
  • Record last updated2021 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

69 family medicine physician records list a practice address in Garden Grove

They are 69 of the 4,572 NPPES records with a practice address in Garden Grove, and 17,133 family medicine physician records in California.

The 8 family medicine physician records with the nearest ZIP codes

  1. Vincent Ayroso, DOGarden Grove, CA 928401891993168
  2. Phillip Castellano, MDGarden Grove, CA 928401467529321
  3. Paul Johnson, MDGarden Grove, CA 928401497790661
  4. Chan Kim, MDGarden Grove, CA 928401679513550
  5. Khiem Lai, M.D.Garden Grove, CA 928401538165576
  6. Nancy Lee-Hata, MDGarden Grove, CA 928401235120734
  7. Michael Malouf, M.D.Garden Grove, CA 928401578549234
  8. Nhanhau Ngo, M.D.Garden Grove, CA 928401336184316

Common questions

What is Gerald Lim, M.D.'s NPI number?

Gerald Lim, M.D.'s National Provider Identifier (NPI) is 1427091958, issued on Jun 13, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Gerald Lim, M.D. located?

The NPPES record lists a practice address at 12100 Euclid St, Garden Grove, CA, 92840. Phone: (714) 741-3555. Providers update this record themselves, so call before visiting.

How can I verify Gerald Lim, M.D.'s license?

NPPES lists California license number A90080, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Gerald Lim, M.D. prescribe under Medicare Part D?

In 2024, Gerald Lim, M.D. had 3,935 Medicare Part D claims for 1,185 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.