Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Lawrence Arnold Sherwin, M.D.

Dermatopathology Physician in Santa Ana, CA · enumerated 2005.

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

National Provider Identifier

1508863150

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Registry record

Entity type Individual (Type 1)

Name Mr. Lawrence Arnold Sherwin

Credential M.D.

Sex Male

Practice address 800 N Tustin Ave, Ste G, Santa Ana, CA, 92705

Phone (714) 547-6111

Fax (714) 547-0833

Enumeration date Jun 28, 2005

Last updated in NPPES Sep 11, 2025

Taxonomy & licenses

207ND0900X Dermatopathology Physician Allopathic & Osteopathic Physicians · License A23310 (CA) Primary

207NI0002X Clinical & Laboratory Dermatological Immunology Physician Allopathic & Osteopathic Physicians · License A23310 (CA) Secondary

207NS0135X Procedural Dermatology Physician Allopathic & Osteopathic Physicians · License A23310 (CA) Secondary

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.

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Frequently asked questions

What is the NPI number for Lawrence Sherwin?

The National Provider Identifier (NPI) for Lawrence Sherwin is 1508863150, a Type 1 (individual) record in the CMS NPPES registry.

Where does Lawrence Sherwin practice?

The practice location on file with NPPES is in Santa Ana, 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 2025-09-11.