Kenneth Birkenstein, M.D.
Family Medicine Physician · Yorba Linda, CA
Kenneth Birkenstein, M.D. is a family medicine physician with a practice address in Yorba Linda, California, and NPI 1093710022, issued on Jun 16, 2005. Check the license (California A35452, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Kenneth Birkenstein
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A35452 CA
Self-reported in NPPES; status is on the state search - Practice location
- 16960 Bastanchury RD, Yorba Linda, CA 92886
- Phone
- (714) 524-1700
- Enumerated
- Jun 16, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (714) 524-2062
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 16960 Bastanchury RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Kenneth Birkenstein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A35452Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average family medicine physician in 2024
12 Medicare Part D claims, against an average of 3,544 among the 117,163 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.
Kenneth Birkenstein among 17,133 family medicine physician records in California
Kenneth Birkenstein, 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. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2026 · 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).
48 family medicine physician records list a practice address in Yorba Linda
They are 48 of the 748 NPPES records with a practice address in Yorba Linda, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Yorba Linda → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Gregg Denicola, MDYorba Linda, CA 928861164469912
- Roxann Engle, DOYorba Linda, CA 928861710981303
- Fred Hurst, MDYorba Linda, CA 928861114927720
- Maria Hutchinson, DOYorba Linda, CA 928861558349316
- Ana Ivanova, M.D.Yorba Linda, CA 928861104812833
- Angsumarn Luecha, MDYorba Linda, CA 928861023018009
- Daniel May, M.D.Yorba Linda, CA 928861760423917
- Dean Okimoto, MDYorba Linda, CA 928861912908336
Common questions
What is Kenneth Birkenstein, M.D.'s NPI number?
Kenneth Birkenstein, M.D.'s National Provider Identifier (NPI) is 1093710022, issued on Jun 16, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Kenneth Birkenstein, M.D. located?
The NPPES record lists a practice address at 16960 Bastanchury RD, Yorba Linda, CA, 92886. Phone: (714) 524-1700. Providers update this record themselves, so call before visiting.
How can I verify Kenneth Birkenstein, M.D.'s license?
NPPES lists California license number A35452, 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 Kenneth Birkenstein, M.D. prescribe under Medicare Part D?
In 2024, Kenneth Birkenstein, M.D. had 12 Medicare Part D claims; the average among family medicine physician prescribers was 3,544. 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.