Anson C. Lam, MD
Emergency Medical Services (Emergency Medicine) Physician · Fullerton, CA
Anson C. Lam, MD is an emergency medical services (emergency medicine) physician with a practice address in Fullerton, California, and NPI 1528121845, issued on Dec 18, 2006. Check the license (California G75187, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Anson C. Lam
- Credential
- MD
- Primary taxonomy
- Emergency Medical Services (Emergency Medicine) Physician 207PE0004X
- License number
- G75187 CA
Self-reported in NPPES; status is on the state search - Practice location
- 101 E Valencia Mesa Dr, Fullerton, CA 92835
- Phone
- (714) 992-3965
- Enumerated
- Dec 18, 2006
- Record last updated
- Mar 11, 2009 (not updated in 17 years: call before relying on the address or phone)
- Medicaid ID
- 00G751870 CA
- Entity
- Type 1 · individual
8 nearest emergency medical services (emergency medicine) physician records → All 233 in California → Look up another NPI →
Also registered at 101 E Valencia Mesa Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Daniel Abbott, MDEmergency Medicine Physician1518907864
- Nelson Aguinaga, RN, FNPFamily Nurse Practitioner1043909609
- Jonathon Ahn, MDAnesthesiology Physician1053803882
- Sora Ahn, RNCritical Care Medicine Registered Nurse1730026493
- Sherry Ansari, DPTPhysical Medicine & Rehabilitation Physician1467972992
- Tandeep Bains, PHARM.D.Pharmacist1568958114
Verify Anson C. Lam in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G75187Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.9 times the Medicare Part D claims of the average emergency medical services (emergency medicine) physician in 2024
844 Medicare Part D claims for 434 beneficiaries, against an average of 292 among the 1,653 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims. 95 claims were for opioids.
Most prescribed
- Ondansetron Odt145 claims
- Ibuprofen62 claims
- Methylprednisolone60 claims
- Tramadol Hcl47 claims
- Amoxicillin-Clavulanate Potass45 claims
- Cefpodoxime Proxetil43 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 85 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $15.07
1 payment: food and beverage; the largest payer was Pfizer Inc. The 489 providers of this specialty with any payment received $337.59 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Anson C. Lam among 233 emergency medical services (emergency medicine) physician records in California
Anson C. Lam, MD is one of 233 emergency medical services (emergency medicine) physician records with a practice address in California. 69% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 50% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileNo · 42% of these records are
- Record last updated2009 · 68% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207PE0004X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medical Services (Emergency Medicine) Physician providers in California
There are 233 emergency medical services (emergency medicine) physician records in California.
All 233 in California → Every provider in Fullerton → Emergency Medical Services (Emergency Medicine) Physician nationwide →
The 8 emergency medical services (emergency medicine) physician records with the nearest ZIP codes
- Frederick Mading, MDAnaheim, CA 928071215980248
- Richard Swartzentruber, MDAnaheim, CA 928071134175391
- Lori Ludeman, MDOrange, CA 928681982010013
- Matthew Mullarky, MDOrange, CA 928681639124811
- Amir Rahimian, MD, MPHOrange, CA 928681669092557
- Shannon Toohey, MDOrange, CA 928681033418801
- Heather Mineo, DVM, DACVECCPlacentia, CA 928701003441148
- Bethanie Pereira, M.D.Santa Ana, CA 927051437272440
Common questions
What is Anson C. Lam, MD's NPI number?
Anson C. Lam, MD's National Provider Identifier (NPI) is 1528121845, issued on Dec 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Anson C. Lam, MD located?
The NPPES record lists a practice address at 101 E Valencia Mesa Dr, Fullerton, CA, 92835. Phone: (714) 992-3965. Providers update this record themselves, so call before visiting.
How can I verify Anson C. Lam, MD's license?
NPPES lists California license number G75187, 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 Anson C. Lam, MD prescribe under Medicare Part D?
In 2024, Anson C. Lam, MD had 844 Medicare Part D claims for 434 beneficiaries; the average among emergency medical services (emergency medicine) physician prescribers was 292. Part D covers Medicare prescriptions only.
What is Anson C. Lam, MD's MIPS final score?
The 2023 MIPS final score is 85 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.