NPI Portal NPI Lookup & Verification

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

Melissa A. Mazzei

Marriage & Family Therapist in Indianapolis, IN · enumerated 2013 · practices at Indianapolis Vamc.

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

National Provider Identifier

1851725568

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Registry record

Entity type Individual (Type 1)
Name Melissa A. Mazzei
Sex Female
Practice address Indianapolis, IN, 46254
Phone (317) 974-4007
Enumeration date Aug 29, 2013
Last updated in NPPES Feb 7, 2023

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

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License 87001448A (IN) Secondary
106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License 35001738A (IN) Primary

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

How do I verify Melissa Mazzei's NPI record?
Cross-check NPI 1851725568 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1851725568 active?
Yes, as of the latest NPPES snapshot, NPI 1851725568 is active (record last updated 2023-02-07).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-02-07.