NPPES file of Aug 9, 2026

Alexander Dematteis, ED.D.

Counselor · O Fallon, MO

Alexander Dematteis, ED.D. is a counselor with a practice address in O Fallon, Missouri, and NPI 1477393163, issued on May 29, 2024. 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
1477393163
Name
Alexander Dematteis
Credential
ED.D.
Primary taxonomy
Counselor 101Y00000X
Practice location
1654 Bryan RD, O Fallon, MO 63368
Phone
(636) 344-0433
Enumerated
May 29, 2024
Record last updated
May 29, 2024
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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Also registered at 1654 Bryan RD

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

  1. Jana AndersonMental Health Counselor1649089723
  2. Colleen Chiapel, LPCProfessional Counselor1427513332
  3. Elizabeth CieslakMental Health Counselor1508439316
  4. Bettina Comstock, PLPCProfessional Counselor1104153147
  5. Scott Deppong, M.ED.Professional Counselor1780130187
  6. Samantha GorhamMental Health Counselor1285477588

Verify Alexander Dematteis 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

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16 counselor records list a practice address in O Fallon

They are 16 of the 1,225 NPPES records with a practice address in O Fallon, and 1,069 counselor records in Missouri. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 16 in O Fallon → All 1,069 in Missouri → Every provider in O Fallon →

Other counselor records in Missouri

  1. Misty Abbott, MA LPCCape Girardeau, MO1275875023
  2. Khawlah AbdeinSaint Louis, MO1972233955
  3. Julia Adami, LPCMacon, MO1649578931
  4. Henry AdieleWebster Groves, MO1215656889
  5. Delaney Adler, PLPCLebanon, MO1376229237
  6. Trana AgnewSaint Louis, MO1033646690
  7. Nicole AinleySaint Louis, MO1518446954
  8. Natalie Akins, LPCColumbia, MO1902325012
  9. Nancy Albus, LPCKirkwood, MO1811050883
  10. Nicole AlexanderSaint Louis, MO1942752886

Common questions

What is Alexander Dematteis, ED.D.'s NPI number?

Alexander Dematteis, ED.D.'s National Provider Identifier (NPI) is 1477393163, issued on May 29, 2024. An NPI identifies a provider in billing; it is not a license.

Where is Alexander Dematteis, ED.D. located?

The NPPES record lists a practice address at 1654 Bryan RD, O Fallon, MO, 63368. Phone: (636) 344-0433. Providers update this record themselves, so call before visiting.

How can I verify Alexander Dematteis, ED.D.'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.