COLLEEN CALLAHAN LCSW
NPI 1225364441
Social Worker - Clinical in Littleton, CO
About Colleen Callahan Lcsw NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
COLLEEN CALLAHAN LCSW (NPI 1225364441) is an individual clinical provider in Littleton, Colorado, licensed in Colorado (CSW.00001313) and active in the NPI registry since October 2009. She is enrolled in Medicare PECOS, maintains a secondary practice location in Denver, and is a graduate of Other (2006).
NPPES Registry Identity
Specialties & Licenses
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.
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Colleen Callahan Lcsw is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 80120 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LITTLETON, CO 80120
LITTLETON, CO 80120
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 Colleen Callahan's NPI number?
The NPI number for Colleen Callahan is 1225364441. It was assigned to this individual provider in the NPPES registry on October 22, 2009.
Where is Colleen Callahan located?
Colleen Callahan practices at 6507 S Santa Fe Dr, Littleton, CO 80120. The listed phone number is (303) 730-8858.
What is Colleen Callahan's specialty?
The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.
Is Colleen Callahan enrolled in Medicare?
Yes. Colleen Callahan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
What insurance does Colleen Callahan accept?
Health plans from Oscar Insurance Company list Colleen Callahan 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 Colleen Callahan was last updated on October 21, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.
