Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Theresa Pennachio, LMFT

Marriage & Family Therapist in New Haven, CT · enumerated 2014.

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

National Provider Identifier

1891118204

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Registry record

Entity type Individual (Type 1)

Name Theresa Pennachio

Credential LMFT

Sex Female

Practice address 428 Columbus Avenue, Child Family Guidance, New Haven, CT, 06519

Phone (203) 503-3055

Fax (203) 503-3066

Enumeration date Jan 22, 2014

Last updated in NPPES Mar 17, 2018

Taxonomy & licenses

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers Primary

LMFT · Licensed Marriage and Family Therapist: A licensed therapist specializing in relational and family psychotherapy. About the LMFT credential

Other identifiers

Identifier	Type	State	Issuer
004235918	Medicaid	CT	-

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 Theresa Pennachio?

The National Provider Identifier (NPI) for Theresa Pennachio is 1891118204, a Type 1 (individual) record in the CMS NPPES registry.

Where does Theresa Pennachio practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-03-17.