Kathryn Allen, MD
Family Medicine Physician · Fountain Valley, CA
Kathryn Allen, MD is a family medicine physician with a practice address in Fountain Valley, California, and NPI 1023058278, issued on Jun 7, 2006. Check the license (California G156448, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Kathryn Allen
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- G156448 CA
173729-1205 UT
Self-reported in NPPES; status is on the state search - Practice location
- 18785 S. Brookhurst St, Fountain Valley, CA 92708
- Phone
- (714) 378-5300
- Enumerated
- Jun 7, 2006
- Entity
- Type 1 · individual
Verify Kathryn Allen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G156448Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
99% fewer Medicare Part D claims than the average family medicine physician in 2024
46 Medicare Part D claims for 18 beneficiaries, against an average of 3,519 among the 111,126 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.
50 family medicine physician records list a Fountain Valley practice address
They are 50 of the 2,190 NPPES records with a Fountain Valley practice address, and 16,272 family medicine physician records in California.
All 50 in Fountain Valley → All 16,272 in California → Every provider in Fountain Valley →
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 Kathryn Allen, MD's NPI number?
Kathryn Allen, MD's National Provider Identifier (NPI) is 1023058278, issued on Jun 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Kathryn Allen, MD located?
The NPPES record lists a practice address at 18785 S. Brookhurst St, Fountain Valley, CA, 92708. Phone: (714) 378-5300. Providers update this record themselves, so call before visiting.
How can I verify Kathryn Allen, MD's license?
NPPES lists California license number G156448, 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 Kathryn Allen, MD prescribe under Medicare Part D?
In 2024, Kathryn Allen, MD had 46 Medicare Part D claims for 18 beneficiaries; 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.