Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Theresa Catherine O'Neill, L.A.C.

Counselor in Mountain Lakes, NJ · enumerated 2012.

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

National Provider Identifier

1609149285

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Registry record

Entity type Individual (Type 1)

Name Ms. Theresa Catherine O'Neill

Credential L.A.C.

Sex Female

Practice address 420 Boulevard, Suite 101, Mountain Lakes, NJ, 07046

Phone (973) 321-4380

Enumeration date Feb 13, 2012

Last updated in NPPES Feb 13, 2012

Taxonomy & licenses

101Y00000X Counselor Behavioral Health & Social Service Providers · License 37AC00107900 (NJ) Primary

LAC · Licensed Acupuncturist: A practitioner licensed to perform acupuncture. About the LAC credential

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 Theresa O'Neill practice?

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

What is the NPI number for Theresa O'Neill?

The National Provider Identifier (NPI) for Theresa O'Neill is 1609149285, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-02-13.