NPI Portal NPI Lookup & Verification

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

Ms. Jill Marie Mattern

Addiction (Substance Use Disorder) Counselor in Ukiah, CA · enumerated 2007 · practices at Ford Street Project.

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

National Provider Identifier

1669514253

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Registry record

Entity type Individual (Type 1)
Name Ms. Jill Marie Mattern
Sex Female
Practice address Ukiah, CA, 95482
Phone (707) 462-6290
Fax (707) 468-6427
Enumeration date Feb 12, 2007
Last updated in NPPES Feb 9, 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 Secondary
207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License A78277 (CA) Secondary
207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 242578-1 (NY) Secondary
101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License 14753 (CA) 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

Is NPI 1669514253 active?
Yes — as of the latest NPPES snapshot, NPI 1669514253 is active (record last updated 2023-02-09).
How do I verify Jill Mattern's NPI record?
Cross-check NPI 1669514253 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-02-09.