Alfred L. Horowitz, M.D.
Diagnostic Radiology Physician · Berkeley, CA
Alfred L. Horowitz, M.D. is a diagnostic radiology physician with a practice address in Berkeley, California, and NPI 1336182757, issued on Jun 14, 2006. Check the license (California G22171, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Alfred L. Horowitz
- Credential
- M.D.
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- G22171 CA
Self-reported in NPPES; status is on the state search - Practice location
- 927 Euclid Ave, Berkeley, CA 94708
- Phone
- (510) 548-7634
- Enumerated
- Jun 14, 2006
- Record last updated
- Jul 20, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (888) 633-8231
- Medicaid IDs
- N00238 SC
89-132AT NC - Medicare enrollment
- Enrolled (PECOS I20061221000370); accepts Medicare assignment
- Medical or professional school
- Js Weill Medical College, Cornell University, 1968
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 4,500 in California → Look up another NPI →
Verify Alfred L. Horowitz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G22171Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average diagnostic radiology physician in 2024
13 Medicare Part D claims, against an average of 51 among the 2,711 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
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.
Bills Medicare through one group practice
- Medical Insights Diagnostic Centers Concord Professional CorporationPalm Desert, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alfred L. Horowitz among 4,500 diagnostic radiology physician records in California
Alfred L. Horowitz, M.D. 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. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 52% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated1968 · median 2004 among the 3,130 with a school on file
- Record last updated2009 · 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.
All 4,500 in California → Every provider in Berkeley → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Phoebe Dann, M.D.Kensington, CA 947071396913968
- Leroy Custer, M.D.Berkeley, CA 947051538104179
- Lawrence Holmes, M.D.Berkeley, CA 947051962435834
- Kobi Ledor, M.D.Berkeley, CA 947051477790913
- Anton Pogany, M.D.Berkeley, CA 947051467492264
- Peggy Wu, M.D.Berkeley, CA 947051073701967
- Stephen Chan, MDOakland, CA 946111073019899
- Li Hsia Cheong, MDOakland, CA 946111407514326
Common questions
What is Alfred L. Horowitz, M.D.'s NPI number?
Alfred L. Horowitz, M.D.'s National Provider Identifier (NPI) is 1336182757, issued on Jun 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Alfred L. Horowitz, M.D. located?
The NPPES record lists a practice address at 927 Euclid Ave, Berkeley, CA, 94708. Phone: (510) 548-7634. Providers update this record themselves, so call before visiting.
How can I verify Alfred L. Horowitz, M.D.'s license?
NPPES lists California license number G22171, 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 Alfred L. Horowitz, M.D. prescribe under Medicare Part D?
In 2024, Alfred L. Horowitz, M.D. had 13 Medicare Part D claims; the average among diagnostic radiology physician prescribers was 51. 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.