Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum Organization subpart

Thomas M. Howieson D.D.S., PC

Q: What is the NPI number for Thomas M. Howieson D.D.S., PC?

The NPI for Thomas M. Howieson D.D.S., PC is 1265831135, a Type 2 (organization) record in the CMS NPPES registry.

Dental Clinic/Center in Wellesley Hills, MA · enumerated 2014 · authorized official Thomas Howieson, President.

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

National Provider Identifier

1265831135

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Registry record

Entity type Organization (Type 2)

Legal business name Thomas M. Howieson D.D.S., PC

Parent organization Thomas M. Howieson D.D.S., P.C.

Practice address 386 Washington St, Wellesley Hills, MA, 02481

Phone (781) 235-6710

Enumeration date Aug 17, 2014

Last updated in NPPES Aug 17, 2014

Taxonomy & classification

261QD0000X Dental Clinic/Center Ambulatory Health Care Facilities · License 14570 (MA) Primary

Authorized official

Name Thomas Howieson

Title President

Phone (781) 235-6710

Other identifiers

Identifier	Type	State	Issuer
1770657603	Other	MA	INDIVIDUAL NPI #

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 Thomas M. Howieson D.D.S., PC?

NPPES lists Thomas Howieson (President) as the authorized official for this organization.

What is the NPI number for Thomas M. Howieson D.D.S., PC?

The NPI for Thomas M. Howieson D.D.S., PC is 1265831135, a Type 2 (organization) record in the CMS NPPES registry.

Providers at this address

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Janice Washburn Specialist · Wellesley, MA NPI 1134190895 Janice Cleveland Washburn, MD, PC Procedural Dermatology Physician · Wellesley, MA NPI 1467472399 Thomas Howieson Periodontics · Wellesley Hills, MA NPI 1770657603 Samuel Koo Periodontics · Wellesley Hills, MA NPI 1093912982 Apderm Wellesley P.C. Dermatology Physician · Wellesley, MA NPI 1437557519 Women'S Wellness Center, PC Obstetrics & Gynecology Physician · Wellesley Hills, MA NPI 1801380233 Temi Correll Registered Dietitian · Wellesley, MA NPI 1194209304 Samuel Koo, D.M.D., P.C. Periodontics · Wellesley Hills, MA NPI 1588132450

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-08-17.