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

Graham D. Rosenberg, MFT

Mental Health Counselor in San Leandro, CA · enumerated 2007.

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

National Provider Identifier

1255472452

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Registry record

Entity type Individual (Type 1)

Name Graham D. Rosenberg

Credential MFT

Sex Male

Practice address San Leandro, CA, 94578

Phone (510) 667-4901

Fax (510) 667-4964

Enumeration date Feb 9, 2007

Last updated in NPPES Dec 20, 2011

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

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License MFT #138 (HI) Secondary

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License MFC 41511 (CA) Primary

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

What specialty is Graham Rosenberg?

Graham Rosenberg is registered in NPPES with the primary taxonomy of Mental Health Counselor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-12-20.