NPPES file of Aug 9, 2026

Gregory Mason Macdonald

Addiction (Substance Use Disorder) Counselor · Creve Coeur, MO

Gregory Mason Macdonald is an addiction (substance use disorder) counselor with a practice address in Creve Coeur, Missouri, and NPI 1104077296, issued on Oct 7, 2008. Check the license with the Missouri 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
1104077296
Name
Gregory Mason Macdonald
Primary taxonomy
Addiction (Substance Use Disorder) Counselor 101YA0400X
License number
101YA0400X HI
Self-reported in NPPES; status is on the state search
Practice location
12647 Olive Blvd, Creve Coeur, MO 63141
Phone
(800) 325-3982
Enumerated
Oct 7, 2008
Record last updated
Oct 7, 2008 (not updated in 18 years: call before relying on the address or phone)
Fax
(877) 685-9866
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.
Download card Updates feed

8 nearest addiction (substance use disorder) counselor records → All 299 in Missouri → Look up another NPI →

Also registered at 12647 Olive Blvd

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Claire BakerSocial Worker1326575671
  2. Sheila Dodson, MCClinical Social Worker1437687175
  3. Maria GodoySocial Worker1316463292
  4. Emily HerbstCounselor1538697412
  5. Nichelle Meriwether, MASocial Worker1841711751
  6. Kristi PooreMental Health Counselor1942880877

Verify Gregory Mason Macdonald in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Missouri 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
Find the Missouri license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

Gregory Mason Macdonald among 299 addiction (substance use disorder) counselor records in Missouri

Gregory Mason Macdonald is one of 299 addiction (substance use disorder) counselor records with a practice address in Missouri. 1% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2008, is newer than 13% of them.

  • NPI issued2008 · 13% of these records are older, 80% newer
  • In a Medicare fileNo · 1% of these records are
  • In the CMS Doctors and Clinicians fileNo · 3% of these records are
  • Record last updated2008 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 101YA0400X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Addiction (Substance Use Disorder) Counselor providers in Missouri

There are 299 addiction (substance use disorder) counselor records in Missouri. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 299 in Missouri → Every provider in Creve Coeur → Addiction (Substance Use Disorder) Counselor nationwide →

The 8 addiction (substance use disorder) counselor records with the nearest ZIP codes

  1. Sandra Filer, M.A.,L.C.S.W.Creve Coeur, MO 631411306865944
  2. Eric Flanagan, AASCreve Coeur, MO 631411588925838
  3. Christine Hoester, LCSW, CSAC IICreve Coeur, MO 631411255546875
  4. Evelyn RogersSaint Louis, MO 631411124539978
  5. Brianna Evans, BA, MAADC 2, MARSSaint Louis, MO 631391376268540
  6. Jennifer King Brogan, CRADC, MARS, CHSaint Louis, MO 631391255951398
  7. Stephanie Gladney, CSAC IIBrentwood, MO 631441295968444
  8. Bridget Hamilton, RASAC IIBrentwood, MO 631441801029053

Common questions

What is Gregory Mason Macdonald's NPI number?

Gregory Mason Macdonald's National Provider Identifier (NPI) is 1104077296, issued on Oct 7, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Gregory Mason Macdonald located?

The NPPES record lists a practice address at 12647 Olive Blvd, Creve Coeur, MO, 63141. Phone: (800) 325-3982. Providers update this record themselves, so call before visiting.

How can I verify Gregory Mason Macdonald's license?

Search the Missouri 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.