Mark Decatur Whitman

Mark Decatur Whitman is a Social Worker provider (Social Worker) practicing in Mashpee, MA, registered in the NPPES registry with NPI 1881413029 since 2024.

✓ Active NPI ✓ Valid NPI checksum

NPI	1881413029
Entity type	Individual (Type 1)
Name	Mark Decatur Whitman
Sex	Male
Practice address	299 FALMOUTH RD, Mashpee, MA, 02649
Phone	5086489523
Enumeration date	2024-10-04
Last updated in NPPES	2024-10-04

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
104100000X	Social Worker	Primary	—	—

Copy-ready billing details

Provider: Mark Whitman
NPI: 1881413029
Taxonomy: 104100000X (Social Worker)
Address: 299 FALMOUTH RD, Mashpee, MA, 02649

Verify this record

Cross-check NPI 1881413029 against the authoritative CMS record: view Mark Decatur Whitman on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Mark Whitman?

Mark Whitman is registered in NPPES with the primary taxonomy of Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2024-10-04.