Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Margaret Witecki, PH.D

Clinical Psychologist in Natick, MA · enumerated 2006.

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

National Provider Identifier

1912949231

Verified

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Registry record

Entity type Individual (Type 1)

Name Margaret Witecki

Credential PH.D

Sex Female

Practice address Natick, MA, 01760

Phone (508) 740-5033

Fax (781) 932-4140

Enumeration date Jun 12, 2006

Last updated in NPPES Sep 20, 2011

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 2315 (MA) Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

Other identifiers

Identifier	Type	State	Issuer
0510939	Medicaid	MA	-
170835	Other	MA	MAGELLAN
W02583	Other	MA	BLUE CROSS/BLUE SHIELD

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

Where does Margaret Witecki practice?

The practice location on file with NPPES is in Natick, MA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Margaret Witecki?

The National Provider Identifier (NPI) for Margaret Witecki is 1912949231, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Janet Weathers Clinical Psychologist · Natick, MA NPI 1093797896 Mary Howes Clinical Psychologist · Natick, MA NPI 1881638682 Deborah Wolozin Clinical Psychologist · Natick, MA NPI 1053337477 Susan Manheim Clinical Psychologist · Natick, MA NPI 1467510396 Anna Lombroso Psychologist · Natick, MA NPI 1073671459 Maureen Klautky Clinical Psychologist · Natick, MA NPI 1720390685 Elizabeth Smith Psychologist · Natick, MA NPI 1508374802

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-09-20.