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TIFFANY M SIEFKEN LCSW/LISW
NPI 1366068082
Social Worker - Clinical in Fort Collins, CO

Active since June 18, 2020
2244 MILES HOUSE AVE APT 108, FORT COLLINS, CO 80525(319) 316-2262(888) 375-1723 Get Directions Write a Review

NPPES record last updated: August 27, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Tiffany M Siefken Lcsw/lisw NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

TIFFANY M SIEFKEN LCSW/LISW (NPI 1366068082) is an individual clinical provider in Fort Collins, Colorado, licensed in Colorado (09930293) and active in the NPI registry since June 2020.

NPPES Registry Identity

NPI1366068082
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameTIFFANY M SIEFKENCredential: LCSW/LISW
Location Address2244 MILES HOUSE AVE APT 108Fort Collins, CO 80525-4191
Mailing Address2244 Miles House Ave Apt 108Fort Collins, CO 80525-4191 · (319) 316-2262 · Fax (888) 375-1723
Phone(319) 316-2262
Fax(888) 375-1723
Sole ProprietorNo
Enumeration DateJune 18, 2020
Last NPPES UpdateAugust 27, 2025
NPPES CertifiedAugust 27, 2025
✔ NPI 1366068082 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
Licenses✔ Licensed in CO · 09930293✔ Licensed in IL · 149.028517✔ Licensed in IA · 100864
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
2244 MILES HOUSE AVE APT 108, Fort Collins, CO 80525
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Insurance Company, Providence Health Plan, UnitedHealthcare.Insurance ›

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Tiffany Siefken's NPI number?

The NPI number for Tiffany Siefken is 1366068082. It was assigned to this individual provider in the NPPES registry on June 18, 2020.

Where is Tiffany Siefken located?

Tiffany Siefken practices at 2244 Miles House Ave Apt 108, Fort Collins, CO 80525. The listed phone number is (319) 316-2262.

What is Tiffany Siefken's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

What insurance does Tiffany Siefken accept?

Health plans from Oscar Insurance Company, Providence Health Plan and UnitedHealthcare list Tiffany Siefken as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Tiffany Siefken was last updated on August 27, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.