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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MR. MICHAEL DINNEEN LCSW
NPI 1770072811
Counselor - Addiction (Substance Use Disorder) in Greenwood Village, CO

Active since May 03, 2018
5600 S QUEBEC ST STE 126B, GREENWOOD VILLAGE, CO 80111(720) 935-5903 Get Directions Write a Review

NPPES record last updated: September 29, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 29, 2026, Mar 3, 2025, Jun 20, 2018 and 1 more (4 updates tracked since 2018).

About Mr. Michael Dinneen Lcsw NPPES

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

MR. MICHAEL DINNEEN LCSW (NPI 1770072811) is an individual addiction (substance use disorder) provider in Greenwood Village, Colorado, licensed in Colorado (4707) and active in the NPI registry since May 2018.

NPPES Registry Identity

NPI1770072811
Entity TypeIndividualMale
Primary Taxonomy101YA0400X
Provider Legal NameMR. MICHAEL DINNEENCredential: LCSW
Location Address5600 S QUEBEC ST STE 126BGreenwood Village, CO 80111-2209
Mailing Address5600 S Quebec St Ste 126bGreenwood Village, CO 80111-2209 · (720) 935-5903
Phone(720) 935-5903
Sole ProprietorYes
Enumeration DateMay 3, 2018
Last NPPES UpdateSeptember 29, 20264 updates tracked since enumeration
NPPES CertifiedMarch 3, 2025
✔ NPI 1770072811 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyCounselor · Addiction (Substance Use Disorder)Behavioral Health & Social Service Providers
Taxonomy Code101YA0400X
License✔ Licensed in CO · 4707
Also ListedCounselor · ProfessionalTaxonomy 101YP2500X · License 992263 (CO)
5600 S QUEBEC ST STE 126B, Greenwood Village, CO 80111
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Other Identifiers 1

Other4707CO · Caciii

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DANIEL C MEYER LPC, LAC
Counselor (Addiction (Substance Use Disorder))
5600 S QUEBEC ST STE 126B
GREENWOOD VILLAGE, CO 80111
Arapahoe County (574) 350-0145
RESTORATIONS THERAPY, LLC
Clinic/Center (Rehabilitation, Substance Use Disorder)
5600 S QUEBEC ST STE 126B
GREENWOOD VILLAGE, CO 80111
Arapahoe County (720) 669-1285

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 Michael Dinneen's NPI number?

The NPI number for Michael Dinneen is 1770072811. It was assigned to this individual provider in the NPPES registry on May 3, 2018.

Where is Michael Dinneen located?

Michael Dinneen practices at 5600 S Quebec St Ste 126B, Greenwood Village, CO 80111. The listed phone number is (720) 935-5903.

What is Michael Dinneen's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Addiction (Substance Use Disorder), with taxonomy code 101YA0400X.

When was this NPI record last updated?

The NPPES record for Michael Dinneen was last updated on September 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 24 days 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.