James Fenlon, M.D
Family Medicine Physician · Irvine, CA
James Fenlon, M.D is a family medicine physician with a practice address in Irvine, California, and NPI 1851347256, issued on May 26, 2006. Check the license (California C30110, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- James Fenlon
- Credential
- M.D
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- C30110 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4870 Barranca Pkwy, Irvine, CA 92604
- Phone
- (949) 857-1248
- Enumerated
- May 26, 2006
- Record last updated
- Oct 9, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (949) 559-1165
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 4870 Barranca Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify James Fenlon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C30110Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
James Fenlon among 17,133 family medicine physician records in California
James Fenlon, 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 not. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 59% newer
- In a Medicare fileNo · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2007 · 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).
148 family medicine physician records list a practice address in Irvine
They are 148 of the 7,778 NPPES records with a practice address in Irvine, and 17,133 family medicine physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 17,133 in California → Every provider in Irvine → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Jon Biorkman, MDIrvine, CA 926041023008679
- David Bunten, D.O.Irvine, CA 926041679527857
- Jun Ho Chae, M.D.Irvine, CA 926041003811969
- Howard Fishbein, M.D.Irvine, CA 926041689629487
- Richard Kim, DOIrvine, CA 926041710978770
- Steven Long, MDIrvine, CA 926041760446470
- Mary McCarthy, MDIrvine, CA 926041508820267
- Maryam Rahnemun, M.D.Irvine, CA 926041114921673
Common questions
What is James Fenlon, M.D's NPI number?
James Fenlon, M.D's National Provider Identifier (NPI) is 1851347256, issued on May 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James Fenlon, M.D located?
The NPPES record lists a practice address at 4870 Barranca Pkwy, Irvine, CA, 92604. Phone: (949) 857-1248. Providers update this record themselves, so call before visiting.
How can I verify James Fenlon, M.D's license?
NPPES lists California license number C30110, 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), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.