Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Benjamin C Dudley, MD

Urology Physician in Petaluma, CA · enumerated 2007.

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

National Provider Identifier

1669682811

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Registry record

Entity type Individual (Type 1)

Name Dr. Benjamin C Dudley

Credential MD

Sex Male

Practice address 335 S Mcdowell Blvd, Petaluma, CA, 94954

Phone (415) 461-4000

Fax (415) 461-6907

Enumeration date May 23, 2007

Last updated in NPPES Mar 13, 2026

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License 13996 (NV) Secondary

208800000X Urology Physician Allopathic & Osteopathic Physicians · License A136154 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
07938	Medicaid	LA	-

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 1669682811 active?

Yes, as of the latest NPPES snapshot, NPI 1669682811 is active (record last updated 2026-03-13).

How do I verify Benjamin Dudley's NPI record?

Cross-check NPI 1669682811 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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Veronique Au Emergency Medicine Physician · Petaluma, CA NPI 1255399531 Jodi Adams Emergency Medicine Physician · Petaluma, CA NPI 1962511766 Erick Miranda Emergency Medicine Physician · Petaluma, CA NPI 1669597167 Cheryl Negrin Family Nurse Practitioner · Petaluma, CA NPI 1558577692 Tania Sadoun Emergency Medical Services (Emergency Medicine) Physician · Petaluma, CA NPI 1639405640 Tamar Segev Obstetrics & Gynecology Physician · Petaluma, CA NPI 1972902971 Samantha Spinner Physician Assistant · Petaluma, CA NPI 1902407679 Kelley Liao Family Medicine Physician · Petaluma, CA NPI 1053053694

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-03-13.