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Base of the Bays Dermatology PC

Pediatric Dermatology Physician in Williamsburg, MI · enumerated 2006 · authorized official Mark Saunders, President.

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

National Provider Identifier

1538263231

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Registry record

Entity type Organization (Type 2)
Legal business name Base of the Bays Dermatology PC
Other name <Unavail>
Practice address 3950 Shore Rd, Williamsburg, MI, 49690
Phone (231) 938-7004
Fax (231) 938-3112
Enumeration date Sep 12, 2006
Last updated in NPPES Sep 11, 2025

Taxonomy & classification

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License MS051504 (MI) Secondary
207ND0101X MOHS-Micrographic Surgery Physician Allopathic & Osteopathic Physicians · License MS051504 (MI) Secondary
207ND0900X Dermatopathology Physician Allopathic & Osteopathic Physicians · License MS051504 (MI) Secondary
207NP0225X Pediatric Dermatology Physician Allopathic & Osteopathic Physicians · License MS051504 (MI) Primary
207NS0135X Procedural Dermatology Physician Allopathic & Osteopathic Physicians · License MS051504 (MI) Secondary

Authorized official

Name Mark Saunders
Title President
Phone (231) 938-3112

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

Who is the authorized official for Base of the Bays Dermatology PC?
NPPES lists Mark Saunders (President) as the authorized official for this organization.
What is the NPI number for Base of the Bays Dermatology PC?
The NPI for Base of the Bays Dermatology PC is 1538263231, a Type 2 (organization) record in the CMS NPPES registry.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.