Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William Lane Verlenden, MD

Surgery Physician in Monterey, CA · enumerated 2006.

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

National Provider Identifier

1912979642

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Registry record

Entity type Individual (Type 1)

Name Dr. William Lane Verlenden

Credential MD

Sex Male

Practice address 2 Upper Ragsdale Dr, B230, Monterey, CA, 93940

Phone (831) 649-0808

Enumeration date Feb 6, 2006

Last updated in NPPES Jan 11, 2010

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License G23505 (CA) Primary

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

What is the NPI number for William Verlenden?

The National Provider Identifier (NPI) for William Verlenden is 1912979642, a Type 1 (individual) record in the CMS NPPES registry.

Where does William Verlenden practice?

The practice location on file with NPPES is in Monterey, CA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-01-11.