NPPES file of Aug 9, 2026

Mary Katherine Flack

Counselor · Littleton, CO

Mary Katherine Flack is a counselor with a practice address in Littleton, Colorado, and NPI 1710211966, issued on Sep 21, 2009. Check the license with the Colorado board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1710211966
Name
Mary Katherine Flack
Primary taxonomy
Counselor 101Y00000X
Practice location
10655 W Berry Dr, Littleton, CO 80127
Phone
(303) 956-9390
Enumerated
Sep 21, 2009
Record last updated
Sep 21, 2009 (not updated in 17 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Verify Mary Katherine Flack in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Colorado board licenses this professionCheck the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
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61 counselor records list a practice address in Littleton

They are 61 of the 3,918 NPPES records with a practice address in Littleton, and 2,550 counselor records in Colorado. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

Other counselor records in Colorado

  1. Abigail A HarrisonDenver, CO1760221998
  2. Emily Abbett-Wald, B.A.Vail, CO1780916353
  3. Dean AbeytaLakewood, CO1336838960
  4. Tricia AbramDenver, CO1154453694
  5. Jane AckermanWheat Ridge, CO1891183042
  6. Sierra Ackerman, LPCNorthglenn, CO1700463411
  7. Alea Acosta, LPCCFort Collins, CO1699509133
  8. Kaylie AcostaColorado Springs, CO1457219016
  9. Lizbeth Acosta-AguilarLafayette, CO1043951544
  10. Bonnie AcreeThornton, CO1518376862

Common questions

What is Mary Katherine Flack's NPI number?

Mary Katherine Flack's National Provider Identifier (NPI) is 1710211966, issued on Sep 21, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Mary Katherine Flack located?

The NPPES record lists a practice address at 10655 W Berry Dr, Littleton, CO, 80127. Phone: (303) 956-9390. Providers update this record themselves, so call before visiting.

How can I verify Mary Katherine Flack's license?

Search the Colorado board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.