Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Robert J Weissman, AU.D.

Audiologist in Pasadena, CA · enumerated 2005.

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

National Provider Identifier

1841293305

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Registry record

Entity type Individual (Type 1)

Name Dr. Robert J Weissman

Credential AU.D.

Sex Male

Practice address 50 Alessandro Pl, Suite 230, Pasadena, CA, 91105

Phone (626) 796-9510

Fax (626) 796-9520

Enumeration date May 27, 2005

Last updated in NPPES Jul 11, 2008

Taxonomy & licenses

231H00000X Audiologist Speech, Language and Hearing Service Providers · License AU2060 (CA) Primary

AUD — Doctor of Audiology: A licensed audiologist diagnosing and treating hearing and balance disorders. About the AUD credential

Other identifiers

Identifier	Type	State	Issuer
AU0020600	Medicaid	CA	—

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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.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Robert Weissman?

Robert Weissman is registered in NPPES with the primary taxonomy of Audiologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-07-11.