William Benjamin Birnbaum, MD
Diagnostic Radiology Physician · Anaheim, CA
William Benjamin Birnbaum, MD is a diagnostic radiology physician with a practice address in Anaheim, California, and NPI 1225105745, issued on Nov 29, 2006. Check the license (California G19532, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- William Benjamin Birnbaum
- Credential
- MD
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- G19532 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1111 West LA Palma Ave, Anaheim, CA 92801
- Phone
- (714) 999-6080
- Enumerated
- Nov 29, 2006
- Record last updated
- Mar 7, 2023
- Fax
- (714) 999-3924
- Medicaid ID
- 00G195320 CA
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 4,500 in California → Look up another NPI →
Also registered at 1111 West LA Palma Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Roy Dorman, MDDiagnostic Radiology Physician1366519886
- Lina Le, MDDiagnostic Radiology Physician1912074402
- John Lee, MDDiagnostic Radiology Physician1518026814
- Neil Siegel, MDDiagnostic Radiology Physician1548337033
- Michael Wang, MDDiagnostic Radiology Physician1427117720
Verify William Benjamin Birnbaum in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G19532Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
William Benjamin Birnbaum among 4,500 diagnostic radiology physician records in California
William Benjamin Birnbaum, MD is one of 4,500 diagnostic radiology physician records with a practice address in California. 74% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 52% newer
- In a Medicare fileNo · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 70% of these records are
- Record last updated2023 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Diagnostic Radiology Physician providers in California
There are 4,500 diagnostic radiology physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 4,500 in California → Every provider in Anaheim → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Roy Dorman, MDAnaheim, CA 928011366519886
- Zain Lalani, MDAnaheim, CA 928011659931335
- Lina Le, MDAnaheim, CA 928011912074402
- John Lee, MDAnaheim, CA 928011518026814
- Ashkon Senaati, MDAnaheim, CA 928011346509197
- Neil Siegel, MDAnaheim, CA 928011548337033
- Michael Wang, MDAnaheim, CA 928011427117720
- John Anderson, M.D.Anaheim, CA 928041235246695
Common questions
What is William Benjamin Birnbaum, MD's NPI number?
William Benjamin Birnbaum, MD's National Provider Identifier (NPI) is 1225105745, issued on Nov 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Benjamin Birnbaum, MD located?
The NPPES record lists a practice address at 1111 West LA Palma Ave, Anaheim, CA, 92801. Phone: (714) 999-6080. Providers update this record themselves, so call before visiting.
How can I verify William Benjamin Birnbaum, MD's license?
NPPES lists California license number G19532, 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.