James M. Larson, M.D.
Emergency Medicine Physician · San Diego, CA
James M. Larson, M.D. is an emergency medicine physician with a practice address in San Diego, California, and NPI 1972519189, issued on Jul 31, 2006. Check the license (California G38734, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- James M. Larson
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- G38734 CA
Self-reported in NPPES; status is on the state search - Practice location
- 6655 Alvarado RD, San Diego, CA 92120
- Phone
- (619) 229-3130
- Enumerated
- Jul 31, 2006
- Record last updated
- May 20, 2009 (not updated in 17 years: call before relying on the address or phone)
- Medicaid ID
- 00G387340 CA
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 6655 Alvarado RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Adler, MDEmergency Medicine Physician1790315794
- Christopher Baladad, PHARMDPharmacist1891564530
- Dino Barhoum, M.D.Emergency Medicine Physician1609175173
- Peter Berkman, M.D.Emergency Medicine Physician1851305478
- Robert Bush, PHARMDPharmacist1427979087
- Laura Chechel, MSN, RN, CNSClinical Nurse Specialist1053290106
Verify James M. Larson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G38734Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average emergency medicine physician in 2024
39 Medicare Part D claims, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
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.
James M. Larson among 7,751 emergency medicine physician records in California
James M. Larson, M.D. is one of 7,751 emergency 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 4% of them.
- NPI issued2006 · 4% of these records are older, 60% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2009 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in California
There are 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in San Diego → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Peter Berkman, M.D.San Diego, CA 921201851305478
- Kathy Cooper, D.O.San Diego, CA 921201891802716
- William Durkin, M.D.San Diego, CA 921201174514582
- James Foster, M.D.San Diego, CA 921201699781955
- David Frant, MDSan Diego, CA 921201174690028
- Steven Kohler, MDSan Diego, CA 921201942377858
- Minh Le, MDSan Diego, CA 921201609829142
- Keri London, M.D.San Diego, CA 921201073527313
Common questions
What is James M. Larson, M.D.'s NPI number?
James M. Larson, M.D.'s National Provider Identifier (NPI) is 1972519189, issued on Jul 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James M. Larson, M.D. located?
The NPPES record lists a practice address at 6655 Alvarado RD, San Diego, CA, 92120. Phone: (619) 229-3130. Providers update this record themselves, so call before visiting.
How can I verify James M. Larson, M.D.'s license?
NPPES lists California license number G38734, 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 James M. Larson, M.D. prescribe under Medicare Part D?
In 2024, James M. Larson, M.D. had 39 Medicare Part D claims; the average among emergency medicine physician prescribers was 226. 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.