Thomas Joseph Desmarais, MD
Vascular Surgery Physician · Billings, MT
Thomas Joseph Desmarais, MD is a vascular surgery physician with a practice address in Billings, Montana, and NPI 1972918639, issued on Jun 21, 2014. Check the license (Montana MED-PHYS-LIC-76907, as entered in NPPES) on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Thomas Joseph Desmarais
- Credential
- MD
- Primary taxonomy
- Vascular Surgery Physician 2086S0129X
- License number
- MED-PHYS-LIC-76907 MT
Self-reported in NPPES; status is on the state search - Practice location
- 1233 N 30TH St, Billings, MT 59101
- Phone
- (406) 657-7000
- Enumerated
- Jun 21, 2014
- Record last updated
- Jun 24, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20190814002041); accepts Medicare assignment
- Medical or professional school
- Geisel School Of Medicine At Dartmouth, 2014
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest vascular surgery physician records → All 13 in Montana → Look up another NPI →
Also registered at 1233 N 30TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Abigail AgatepPharmacist1285505024
- Carole Anderson, NNP-BCNeonatal Nurse Practitioner1255617742
- Ty Anderson, MDEmergency Medicine Physician1043889033
- William Anderson, MDPhysical Medicine & Rehabilitation Physician1730125006
- Dean Angell, RNFlight Registered Nurse1265718183
- Charles Aragon, M.D.Anesthesiology Physician1093782591
Verify Thomas Joseph Desmarais in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical Examiners
Search for license MED-PHYS-LIC-76907Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
19% more Medicare Part D claims than the average vascular surgery physician in 2024
240 Medicare Part D claims for 66 beneficiaries, against an average of 201 among the 3,936 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Cilostazol74 claims
- Clopidogrel67 claims
- Atorvastatin Calcium27 claims
- Eliquis22 claims
- Rosuvastatin Calcium13 claims
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.
Industry payments in 2024: $1,003.15
13 payments; by number, the most common kind was food and beverage; the largest payer was W. L. Gore & Associates, Inc. The 4,059 providers of this specialty with any payment received $6,178.00 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.
Bills Medicare through one group practice
- Scl Health Medical Group - Billings LLCBillings, MT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thomas Joseph Desmarais among 13 vascular surgery physician records in Montana
Thomas Joseph Desmarais, MD is one of 13 vascular surgery physician records with a practice address in Montana. 100% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 77% of them.
- NPI issued2014 · 77% of these records are older, 15% newer
- In a Medicare fileYes · 100% of these records are
- In the CMS Doctors and Clinicians fileYes · 92% of these records are
- Graduated2014 · median 2001 among the 12 with a school on file
- Record last updated2019 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2086S0129X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Vascular Surgery Physician providers in Montana
There are 13 vascular surgery physician records in Montana.
All 13 in Montana → Every provider in Billings → Vascular Surgery Physician nationwide →
The 8 vascular surgery physician records with the nearest ZIP codes
- Kevin Bruen, M.D.Billings, MT 591011427221886
- Robert Hancock, MDBillings, MT 591011053599407
- Nolan Mann, M.D.Billings, MT 591011063807014
- Arne Olsen, M.D.Billings, MT 591011821108564
- Michael Orcutt, MDGreat Falls, MT 594051780685636
- David Fortenberry, M.D.Dillon, MT 597251215090774
- Jason Hurd, M.D.Missoula, MT 598021093081150
- Steven Marincel, MDMissoula, MT 598021477013886
Common questions
What is Thomas Joseph Desmarais, MD's NPI number?
Thomas Joseph Desmarais, MD's National Provider Identifier (NPI) is 1972918639, issued on Jun 21, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Thomas Joseph Desmarais, MD located?
The NPPES record lists a practice address at 1233 N 30TH St, Billings, MT, 59101. Phone: (406) 657-7000. Providers update this record themselves, so call before visiting.
How can I verify Thomas Joseph Desmarais, MD's license?
NPPES lists Montana license number MED-PHYS-LIC-76907, 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.
How much does Thomas Joseph Desmarais, MD prescribe under Medicare Part D?
In 2024, Thomas Joseph Desmarais, MD had 240 Medicare Part D claims for 66 beneficiaries; the average among vascular surgery physician prescribers was 201. Part D covers Medicare prescriptions 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. 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.