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

Erin Greenleaf, MED, LMFT, LMHC

Mental Health Counselor in Sharon, MA · enumerated 2011 · practices at Dr Karen Ruskin & Associates Inc.

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

National Provider Identifier

1376822338

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Registry record

Entity type Individual (Type 1)
Name Erin Greenleaf
Credential MED, LMFT, LMHC
Sex Female
Practice address Sharon, MA, 02067
Phone (617) 483-0045
Enumeration date Aug 9, 2011
Last updated in NPPES Apr 1, 2016

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 9006 (MA) Primary
106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License 1511 (MA) Secondary
LMFT · Licensed Marriage and Family Therapist: A licensed therapist specializing in relational and family psychotherapy. About the LMFT 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

What specialty is Erin Greenleaf?
Erin Greenleaf is registered in NPPES with the primary taxonomy of Mental Health Counselor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-04-01.