Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gretchen L Anderson, RN, CS, MS(N),FNP

Family Nurse Practitioner in Los Alamos, NM · enumerated 2006.

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

National Provider Identifier

1871563536

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Registry record

Entity type Individual (Type 1)

Name Gretchen L Anderson

Credential RN, CS, MS(N),FNP

Sex Female

Practice address 3917 West Rd, Suite A, Los Alamos, NM, 87544

Phone (505) 661-8900

Fax (505) 661-8961

Enumeration date Jan 25, 2006

Last updated in NPPES Jan 30, 2012

Taxonomy & licenses

163WG0000X General Practice Registered Nurse Nursing Service Providers · License 102429 (MO) Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License CNP-01819 (NM) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN credential

Other identifiers

Identifier	Type	State	Issuer
429664626	Medicaid	MO	-

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 Gretchen Anderson?

Gretchen Anderson is registered in NPPES with the primary taxonomy of Family Nurse Practitioner. 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.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-01-30.