Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Colleen Marie Witte, RN MS ANP

Nurse Practitioner in San Francisco, CA · enumerated 2005.

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

National Provider Identifier

1689674988

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Registry record

Entity type Individual (Type 1)

Name Ms. Colleen Marie Witte

Credential RN MS ANP

Sex Female

Practice address 1001 Potrero Ave, Bldg. 9, Room 115, San Francisco, CA, 94110

Phone (415) 206-2649

Fax (415) 206-6073

Enumeration date Jul 28, 2005

Last updated in NPPES Jul 22, 2015

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License RNP421777 (CA) Primary

Other identifiers

Identifier	Type	State	Issuer
6124	Other	CA	NP CERTIFICATE

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

How do I verify Colleen Witte's NPI record?

Cross-check NPI 1689674988 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1689674988 active?

Yes, as of the latest NPPES snapshot, NPI 1689674988 is active (record last updated 2015-07-22).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-07-22.