NPPES file of Aug 9, 2026

John Thomas Harris, M.D.

Psychiatry Physician · Helena, MT

John Thomas Harris, M.D. is a psychiatry physician with a practice address in Helena, Montana, and NPI 1710189709, issued on Jun 3, 2007. Check the license (Montana 11371, as entered in NPPES) on the Montana Board of Medical Examiners; 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
1710189709
Name
John Thomas Harris
Credential
M.D.
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
11371 MT
Self-reported in NPPES; status is on the state search
Practice location
900 Jackson St, Helena, MT 59601
Phone
(406) 443-7151
Enumerated
Jun 3, 2007
Record last updated
Mar 7, 2023
Fax
(406) 443-3420
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 900 Jackson St

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

  1. Susan Anderson, LCSWClinical Social Worker1619245925
  2. Sherry Bersanti, LCPCMental Health Counselor1699845875
  3. Robert Brown, LCPCMental Health Counselor1346414349
  4. Arlena Crandell, LCSWClinical Social Worker1336114768
  5. Rosemary Crowley, LCSWClinical Social Worker1063570240
  6. Christine DalyPsychiatry Physician1649380684

Verify John Thomas Harris in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMontana Board of Medical Examiners
    Search for license 11371
    Check 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
Open the Montana license search

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16 psychiatry physician records list a practice address in Helena

They are 16 of the 1,591 NPPES records with a practice address in Helena, and 156 psychiatry physician records in Montana. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

Other psychiatry physician records in Montana

  1. Nora Abdullah, MDMissoula, MT1295354298
  2. Graig Aders, M.D.Great Falls, MT1265758734
  3. Erin Amato, MDBillings, MT1447425178
  4. Alexis Anderson, D.O.Bozeman, MT1124162177
  5. Deanna Armstrong, M.D.Helena, MT1003900184
  6. Eric Arzubi, M.D.Billings, MT1770738353
  7. Kary Aytes, MDMissoula, MT1831261189
  8. Mary Bassingthwaighte, MDMissoula, MT1346399912
  9. Julia Bell, MDHamilton, MT1780664318
  10. Daniel Bemporad, D.O.Warm Springs, MT1811438120

Common questions

What is John Thomas Harris, M.D.'s NPI number?

John Thomas Harris, M.D.'s National Provider Identifier (NPI) is 1710189709, issued on Jun 3, 2007. An NPI identifies a provider in billing; it is not a license.

Where is John Thomas Harris, M.D. located?

The NPPES record lists a practice address at 900 Jackson St, Helena, MT, 59601. Phone: (406) 443-7151. Providers update this record themselves, so call before visiting.

How can I verify John Thomas Harris, M.D.'s license?

NPPES lists Montana license number 11371, as entered by the provider. Search the Montana Board of Medical Examiners at https://ebiz.mt.gov/POL/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

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.