Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Whispering Rock Counseling

Q: What type of organization is Whispering Rock Counseling?

Whispering Rock Counseling is registered in NPPES as a Mental Health Counselor (its primary provider taxonomy).

Mental Health Counselor in Lutherville, MD · enumerated 2024 · authorized official Lisa Mazzilli, Owner/Therapist.

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

National Provider Identifier

1881457604

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Registry record

Entity type Organization (Type 2)

Legal business name Whispering Rock Counseling

Practice address 315 Chapelwood Ln, Lutherville, MD, 21093

Phone (410) 812-1292

Enumeration date Feb 5, 2024

Last updated in NPPES Feb 5, 2024

Taxonomy & classification

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers Primary

Authorized official

Name Lisa Mazzilli

Title Owner/Therapist

Phone (410) 812-1292

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.

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Frequently asked questions

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

What type of organization is Whispering Rock Counseling?

Whispering Rock Counseling is registered in NPPES as a Mental Health Counselor (its primary provider taxonomy).

Providers at this address

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Lisa Mazzilli Mental Health Counselor · Lutherville, MD NPI 1841874765

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-02-05.