Provider Profile
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License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
6507 S SANTA FE DR
Littleton, CO 80120
5967 W Alamo Dr
Denver, CO 80123
Colleen Callahan is a clinical social worker in Littleton, CO. That is the designation recorded for this NPI in the federal registry.
NPI registry
Colleen Callahan is listed at 6507 S Santa Fe Dr, Littleton, CO 80120. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (303) 730-8858. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
Colleen Callahan's National Provider Identifier is 1225364441. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Colleen Callahan attended Other, graduating in 2006. This comes from the CMS National Downloadable File.
CMS public data
Colleen Callahan has 20 years experience. Calculated from a graduation year of 2006, reported in the CMS National Downloadable File.
CMS public data
Not yet. This profile is built from public federal data and has not been confirmed by Colleen Callahan. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.