Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Denise A. Rettenmaier, D.O.

Geriatric Medicine (Internal Medicine) Physician in Yountville, CA · enumerated 2006.

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

National Provider Identifier

1861468373

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Registry record

Entity type Individual (Type 1)

Name Denise A. Rettenmaier

Credential D.O.

Sex Female

Practice address 220 California Dr, C/O Medical Staff Office, Yountville, CA, 94599

Phone (707) 944-4716

Fax (707) 944-5052

Enumeration date Feb 24, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

207RG0300X Geriatric Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 20A6474 (CA) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

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 1861468373 active?

Yes, as of the latest NPPES snapshot, NPI 1861468373 is active (record last updated 2007-07-08).

How do I verify Denise Rettenmaier's NPI record?

Cross-check NPI 1861468373 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.