James Amberg, MD
Family Medicine Physician · La Mesa, CA
James Amberg, MD is a family medicine physician with a practice address in La Mesa, California, and NPI 1265497093, issued on Apr 17, 2006. Check the license (California G048686, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- James Amberg
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- G048686 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5525 Grossmont Center Dr, La Mesa, CA 91942
- Phone
- (619) 644-6500
- Enumerated
- Apr 17, 2006
- Entity
- Type 1 · individual
Also registered at 5525 Grossmont Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Cynthia Adams, PA-CMedical Physician Assistant1447564141
- Alicia Afrah-Boateng, PA-CPhysician Assistant1174073886
- Sonal Agrawal, M.D.Pediatrics Physician1881702348
- Mary Alexander, M.D.Internal Medicine Physician1538177845
- Marsha Blount, MDFamily Medicine Physician1710174693
Verify James Amberg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G048686Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
96% fewer Medicare Part D claims than the average family medicine physician in 2024
131 Medicare Part D claims, against an average of 3,519 among the 111,126 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims.
Most prescribed
- Levothyroxine Sodium39 claims
- Atomoxetine Hcl13 claims
- Dexlansoprazole Dr13 claims
- Estradiol13 claims
- Lubiprostone13 claims
- Medroxyprogesterone Acetate13 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.
59 family medicine physician records list a La Mesa practice address
They are 59 of the 2,168 NPPES records with a La Mesa practice address, and 16,272 family medicine physician records in California.
All 59 in La Mesa → All 16,272 in California → Every provider in La Mesa →
Other family medicine physician records in California
- Omer Aba-Omer, MDSanta Monica, CA1649702093
- Michelle Ababa, MDWilmington, CA1710922513
- Anna Tzeitel Abalos, MDRoseville, CA1720200017
- Adan Abarca, MDAnaheim, CA1760553689
- Vanessa Abarca, DOVentura, CA1952040859
- Lorraine Abate, M.D.Sacramento, CA1104840008
- Robert Abatecola, MDCastro Valley, CA1669551719
- Romeo Abaya, M.D.Cottonwood, CA1598053506
- Effiem Abbah, MD, MPHSan Francisco, CA1821185133
- Khuzeman Abbasi, MDSanta Rosa, CA1841979952
Common questions
What is James Amberg, MD's NPI number?
James Amberg, MD's National Provider Identifier (NPI) is 1265497093, issued on Apr 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James Amberg, MD located?
The NPPES record lists a practice address at 5525 Grossmont Center Dr, La Mesa, CA, 91942. Phone: (619) 644-6500. Providers update this record themselves, so call before visiting.
How can I verify James Amberg, MD's license?
NPPES lists California license number G048686, 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 Amberg, MD prescribe under Medicare Part D?
In 2024, James Amberg, MD had 131 Medicare Part D claims; the average among family medicine physician prescribers was 3,519. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.