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

Katey Pestilli, MSW, LCSW

Social Worker in Marshfield, MA · enumerated 2022 · practices at Massbay Counseling,Inc..

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

National Provider Identifier

1871229468

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Registry record

Entity type Individual (Type 1)

Name Katey Pestilli

Credential MSW, LCSW

Sex Female

Practice address Marshfield, MA, 02050

Phone (781) 834-0747

Fax (781) 834-0763

Enumeration date Jul 27, 2022

Last updated in NPPES Jul 27, 2022

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

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 228260 (MA) Primary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

Other identifiers

Identifier	Type	State	Issuer
228260	Other	MA	ASSOCIATION OF SOCIAL WORK BOARD

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

What is the NPI number for Katey Pestilli?

The National Provider Identifier (NPI) for Katey Pestilli is 1871229468, a Type 1 (individual) record in the CMS NPPES registry.

Where does Katey Pestilli practice?

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

Other providers at this practice address

Browse all →

Massbay Counseling,Inc. Mental Health Clinic/Center (Including Community Mental Health Center) · Marshfield, MA NPI 1750437604 Sarah Broughton Mental Health Counselor · Marshfield, MA NPI 1881990315 Alyson Skok Clinical Social Worker · Marshfield, MA NPI 1518214279 Jessie Lane Marriage & Family Therapist · Marshfield, MA NPI 1396156345 Ayala Royster Clinical Social Worker · Marshfield, MA NPI 1548629009 Elizabeth Thomas Clinical Social Worker · Marshfield, MA NPI 1881238962 Philip Mahar Mental Health Counselor · Marshfield, MA NPI 1508677923 Aaron Collier Mental Health Counselor · Marshfield, MA NPI 1386456986

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-27.