John Thieszen, M.D.
Hospitalist Physician · Billings, MT
John Thieszen, M.D. is a hospitalist physician with a practice address in Billings, Montana, and NPI 1285667816, issued on Jul 8, 2006. Check the license on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- John Thieszen
- Credential
- M.D.
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License numbers
- 47210 CO
47877-020 WI
Self-reported in NPPES; status is on the state search - Practice location
- 3528 Gabel RD, Billings, MT 59102
- Phone
- (970) 391-0572
- Enumerated
- Jul 8, 2006
- Record last updated
- Dec 6, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (815) 377-2580
- Medicaid ID
- 60427876 CO
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 101 in Montana → Look up another NPI →
Also registered at 3528 Gabel RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sarah Hart, PA-CMedical Physician Assistant1205470564
- Mary Rathbun, OTOccupational Therapist1447757174
- Lynn Smith, PTPhysical Therapist1942532361
- Maia Wetzel, PAMedical Physician Assistant1174494413
Verify John Thieszen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical ExaminersCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average hospitalist physician in 2024
29 Medicare Part D claims for 12 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 81.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $175.77
4 payments; by number, the most common kind was food and beverage; the largest payer was Indivior Inc. The 7,324 providers of this specialty with any payment received $494.84 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
John Thieszen among 101 hospitalist physician records in Montana
John Thieszen, M.D. is one of 101 hospitalist physician records with a practice address in Montana. 91% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 13% of them.
- NPI issued2006 · 13% of these records are older, 68% newer
- In a Medicare fileYes · 91% of these records are
- In the CMS Doctors and Clinicians fileNo · 78% of these records are
- Record last updated2010 · 17% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in Montana
There are 101 hospitalist physician records in Montana.
All 101 in Montana → Every provider in Billings → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Riley Brazil, MD/MPHBillings, MT 591011700464344
- Kathryn Durnford, MDBillings, MT 591011740930353
- Mary Galka, DO, MPHBillings, MT 591011215430053
- Matthew Hartman, M.D.Billings, MT 591011083001374
- Trincy JeysinghBillings, MT 591011821514100
- John Konow, MDBillings, MT 591011033731161
- Megan McMillan, M.D.Billings, MT 591011952797326
- Jacob PerrinBillings, MT 591011982135752
Common questions
What is John Thieszen, M.D.'s NPI number?
John Thieszen, M.D.'s National Provider Identifier (NPI) is 1285667816, issued on Jul 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Thieszen, M.D. located?
The NPPES record lists a practice address at 3528 Gabel RD, Billings, MT, 59102. Phone: (970) 391-0572. Providers update this record themselves, so call before visiting.
How can I verify John Thieszen, M.D.'s license?
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.
How much does John Thieszen, M.D. prescribe under Medicare Part D?
In 2024, John Thieszen, M.D. had 29 Medicare Part D claims for 12 beneficiaries; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
What is John Thieszen, M.D.'s MIPS final score?
The 2023 MIPS final score is 81.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. 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.