Thomas J Desmarais, MD

Specialties: Vascular Surgery
Desmarais Thomas J Photo
Primary Location:

SCL Health Heart & Vascular Institute - Billings Cardiac & Vascular Surgery

2900 12th Ave N Ste 400E
Billings, MT 59101
Phone: 406-238-6820
Fax: 406-238-6838
MyChart Provider Yes

Arizona native Dr. Desmarais was drawn to Vascular Surgery for its wide breadth and long-term patients. He provides a level of service that he would expect for his own family members. His philosophy of care is patient centered and evidence based.

Dr. Desmarais looks forward to meaningful interactions with patients whether in the clinic or operating room - and in improving symptoms or preventing complications of vascular disease.

He has many family members locally, and spent a great deal of time during his childhood in Montana. He is pleased to return to Big Sky Country for its friendly and hard-working people, beautiful scenery and outdoor opportunities. When not caring for patients, Dr. Desmarais enjoys backpacking, skiing, cycling and spending time with his family. 

  • American Board of Surgery
  • Washington University School of Medicine
Holy Rosary Healthcare, St. Vincent Healthcare
Patient Ratings (90)
Overall Rating
4.7 out of 5
Provider discussed treatment options
4.7 out of 5
Provider showed concern
4.7 out of 5
Provider explained things clearly
4.7 out of 5
Provider included you in decisions
4.7 out of 5
Likelihood of recommending this provider
4.8 out of 5
Extent to which Care Provider listened
4.8 out of 5

The Patient Rating Score is an average of all responses to physician related questions on the PressGaney Patient Satisfaction Survey.

Responses are reported as a star-rating on a scale of 1 to 5, with 5 being the best score. Learn more about this survey

Patient Reviews (10)

I would recommend *Dr. Desmarais to anyone. He is knowledgeable & caring.


*Dr. Desmarais certainly is one of the best doctors I've had - he's a keeper what a fine young man!


A good listener


I was very impressed by Dr. Desmaris. He is kind and extremely knowledgeable.


Very good with *Dr. Desmarias. We thought he took the time and explained everything very, very well.


It's all good!


Everything was explained _____ if need be he said I could him at anytime.


The dr. saved my life.


Seemed knowledgeable explained pros and cons fairly & honestly I felt. Had my interest 1st and foremost. Took his time with me without being rushed. And he is easy on the eyes.


Very pleased w/doctor.

Page 1 of 1 | Results 1 - 10 of 10
Please contact your insurance company directly before receiving non-emergency medical treatments so you won't have any surprises when it comes to coverage. Depending on your specific insurance policy, the services you receive through SCL Health may be considered “out-of-network." Medical insurance plans we accept:
  • Alignetworks Commercial
  • Alignetworks Work Comp
  • Allegiance Provider Direct LLC Commercial Incl Cigna
  • Allegiance Provider Direct LLC MACo
  • Allegiance Provider Direct LLC MMIA
  • Allegiance Provider Direct LLC State of Montana
  • America's Choice Provider Network
  • Banner Health System
  • BCBS Montana Traditional
  • BCBS Montana Healthlink
  • BCBS Montana Healthy Montana Kids
  • BCBS Montana Medicare Advantage
  • BCBS Montana PPO FEP HMO
  • Cigna see Allegiance Montana
  • Community Health Network/CHN
  • EBMS Associated Employers FCHN Aetna
  • EBMS Avitus Group FCHN Aetna
  • EBMS Billings Public Schools FCHN Aetna
  • EBMS City of Billings FCHN Aetna
  • EBMS Yellowstone County FCHN Aetna
  • FedMed Network Commercial
  • First Choice Health Health Infonet Commercial
  • First Choice of the Midwest Commercial
  • First Health Network Coventry Commercial
  • Fortified Provider Network
  • Health Net Federal Services Tricare
  • Humana Choicecare Alpine Air Employee
  • Humana Medicare Advantage
  • Interwest Commercial
  • Interwest EPO
  • Interwest Work Comp
  • Logistics Health Incorporated RHRP, MEPCOM, WTC and BNSF
  • Montana Health Coop Access Care Open PPO
  • Montana Health Coop Connect Care
  • Montana Health Coop Restrictive preferred network
  • Montana Health Systems Work Comp
  • Pacific Steel & Recycling
  • PacificSource Network
  • Preferred One Commercial
  • Prime Health Services Inc Commercial
  • Prime Health Services Inc Medicare
  • Prime Health Services Inc Work Comp
  • Rocky Mountain Health Plans CHP Plus
  • Rocky Mountain Health Plans PPO/HMO
  • Rocky Mountain Health Plans RAE Medicaid
  • Rocky Mountain Health Plans RMHMO
  • SCL Lutheran Hospice
  • Sibanye Stillwater Health Partners EPO
  • Sibanye Stillwater Health Partners Major Medical PPO
  • Three Rivers Provider Network
  • Triwest Health Alliance Veterans Choice PC3
  • United States Behavioral Health
  • United Healthcare Commercial
  • VA Montana Health System Veterans Choice