Brian Koffman, MD
Family Medicine Physician · Diamond Bar, CA
Brian Koffman, MD is a family medicine physician with a practice address in Diamond Bar, California, and NPI 1326049164, issued on Aug 2, 2005. Check the license (California G36410, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Brian Koffman
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- G36410 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1514 Valley Vista Dr, Diamond Bar, CA 91765
- Phone
- (909) 860-1144
- Enumerated
- Aug 2, 2005
- Entity
- Type 1 · individual
Also registered at 1514 Valley Vista Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- William FenertyFamily Medicine Physician1184625915
- Keli Layton-Cunnigan, PAPhysician Assistant1063613958
- Eric Lee, DOFamily Medicine Physician1801208707
Verify Brian Koffman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G36410Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Industry payments in 2024: $28,331.53
15 payments, mostly travel and lodging; the largest payer was Abbvie Inc.. The 53,013 providers of this specialty with any payment received $861.30 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.
24 family medicine physician records list a Diamond Bar practice address
They are 24 of the 598 NPPES records with a Diamond Bar practice address, and 16,272 family medicine physician records in California.
All 24 in Diamond Bar → All 16,272 in California → Every provider in Diamond Bar →
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 Brian Koffman, MD's NPI number?
Brian Koffman, MD's National Provider Identifier (NPI) is 1326049164, issued on Aug 2, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Brian Koffman, MD located?
The NPPES record lists a practice address at 1514 Valley Vista Dr, Diamond Bar, CA, 91765. Phone: (909) 860-1144. Providers update this record themselves, so call before visiting.
How can I verify Brian Koffman, MD's license?
NPPES lists California license number G36410, 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.
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.