Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Alfred L Horowitz, M.D.

Diagnostic Radiology Physician in Berkeley, CA · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1336182757

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Registry record

Entity type Individual (Type 1)

Name Dr. Alfred L Horowitz

Credential M.D.

Sex Male

Practice address Berkeley, CA, 94708

Phone (510) 548-7634

Fax (888) 633-8231

Enumeration date Jun 14, 2006

Last updated in NPPES Jul 20, 2009

Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License G22171 (CA) Primary

MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
132AT	Other	NC	BCBSNC
N00238	Medicaid	SC	—
89-132AT	Medicaid	NC	—

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1336182757 active?

Yes — as of the latest NPPES snapshot, NPI 1336182757 is active (record last updated 2009-07-20).

How do I verify Alfred Horowitz's NPI record?

Cross-check NPI 1336182757 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-07-20.