Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Steven D Tienvieri II, MA, LPC

Mental Health Counselor in Frederick, CO · enumerated 2015.

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

National Provider Identifier

1437525789

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Registry record

Entity type Individual (Type 1)

Name Steven D Tienvieri II

Credential MA, LPC

Sex Male

Practice address 3116 Camanche Ct, Frederick, CO, 80516

Phone (970) 584-9633

Enumeration date Aug 20, 2015

Last updated in NPPES Mar 5, 2025

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License LPCC.0018047 (CO) Secondary

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License LPC.0018930 (CO) Primary

LPC · Licensed Professional Counselor: A licensed mental-health counselor providing psychotherapy. About the LPC credential

Other identifiers

Identifier	Type	State	Issuer
LPC.0018930	Other	CO	COLORADO DEPARTMENT OF REGULATORY AGENCIES
LPCC.0018047	Other	CO	COLORADO DEPARTMENT OF REGULATORY AGENCIES

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 Steven Tienvieri practice?

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

What is the NPI number for Steven Tienvieri?

The National Provider Identifier (NPI) for Steven Tienvieri is 1437525789, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-03-05.