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

Ms. Ellen Jean Resnik, M.A., LMHC, LMFT

Q: What is the NPI number for Ellen Resnik?

The National Provider Identifier (NPI) for Ellen Resnik is 1821145129, a Type 1 (individual) record in the CMS NPPES registry.

Mental Health Counselor in Brookline, MA · enumerated 2007.

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

National Provider Identifier

1821145129

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Registry record

Entity type Individual (Type 1)

Name Ms. Ellen Jean Resnik

Credential M.A., LMHC, LMFT

Sex Female

Practice address Brookline, MA, 02446

Phone (617) 739-5939

Fax (617) 734-5375

Enumeration date Jan 5, 2007

Last updated in NPPES Jul 8, 2007

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

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License 369 (MA) 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
347294	Other	MA	MAGELLAN
012897	Other	MA	VALUE OPTIONS
014602	Other	MA	HARVARD PILGRIM
LM0199	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 Ellen Resnik practice?

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

What is the NPI number for Ellen Resnik?

The National Provider Identifier (NPI) for Ellen Resnik is 1821145129, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Rachel Schwarz Clinical Social Worker · Brookline, MA NPI 1740382167 Eugene Arthur Mental Health Counselor · Brookline, MA NPI 1144368572 Melissa Gardner Mental Health Counselor · Brookline, MA NPI 1114140357 Lois Arthur Marriage & Family Therapist · Brookline, MA NPI 1881864486 Alison Levin Clinical Social Worker · Brookline, MA NPI 1700017043

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.