Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Lancelot L. Williams, M.D., Inc.

Anesthesiology Physician in Whittier, CA · enumerated 2006 · authorized official Lancelot Williams, President.

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

National Provider Identifier

1134130214

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Registry record

Entity type Organization (Type 2)

Legal business name Lancelot L. Williams, M.D., Inc.

Practice address 12401 Washington Blvd, Whittier, CA, 90602

Phone (562) 531-2550

Enumeration date Aug 11, 2006

Last updated in NPPES Jan 26, 2009

Taxonomy & classification

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License A46503 (CA) Primary

Authorized official

Name Lancelot Williams

Title President

Phone (800) 883-7243

Other identifiers

Identifier	Type	State	Issuer
00A465030	Medicaid	CA	-

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 a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

What type of organization is Lancelot L. Williams, M.D., Inc.?

Lancelot L. Williams, M.D., Inc. is registered in NPPES as a Anesthesiology Physician (its primary provider taxonomy).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-01-26.