
Troy A. Fiddler, MD
HematologyHematology OncologyMedical Oncology
Highlights
Age Groups Seen
- Adult 19-64
- Older Adult >65
Gender
MaleHospital Affiliation
- St. Vincent Regional Hospital
- Holy Rosary Hospital
About
About The Provider
Dr. Fiddler is an investigator involved in clinical research trials in the area of medical oncology and hematology. His clinical research focus includes oncology and hematology.
Locations
- St. Vincent Regional Hospital - Cancer Centers of Montana
- 1315 Golden Valley Circle, Billings, MT 59102
- Get Directions
- Phone: 406-238-6290
- Fax: 406-238-6961
Expertise
Education
- Fellowship: Dartmouth-Hitchcock Medical Center, Internal Medicine, Hematology & Oncology, 2006
- Residency: MaineHealth Maine Medical Center, Internal Medicine, 2003
- Medical School: Oregon Health & Science University School of Medicine, 2000
Board Certifications
- Medical Oncology: American Board of Internal Medicine, 2006
Licensed States
- License ID: 7565A, State: WY
- License ID: MED-PHYS-LIC-11070, State: MT
Insurance
- 6 Degrees Health
- Aetna
- Alignetworks
- Allegiance Provider Direct
- Americas Choice Provider Network
- Banner Health System
- BCBS
- Cigna
- City of Billings Employee Health Plan
- Community Health Network
- FedMed Network
- First Choice Health Network
- First Choice of the Midwest
- First Health/Coventry
- Fortified Provider Network
- Humana
- Humana Medicare Advantage
- Interwest
- Logistics Health Incorporated
- Montana Health Systems
- Mountain Health Co-op
- Pacific Steel & Recycling
- PacificSource
- Preferred One
- Sibanye Stillwater Health Partners
- Three Rivers Provider Network
- Tricare
- TriWest
- United Healthcare
- VA Montana Health System
Reviews
4.9 of 5 stars
411 Ratings, 59 ReviewsThe Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.
- 5 out of 5 starsReviewed on 9/29/2026
He's very caring and is on top of whatever happens.
- 5 out of 5 starsReviewed on 9/17/2026
He is very helpful, caring, and friendly.
- 5 out of 5 starsReviewed on 9/16/2026
I trust his knowledge and decisions with my health.
- 5 out of 5 starsReviewed on 9/14/2026
im very comfortable with hm and he listens to me .I. let Dr tell me his plan forl the plan for my cancer and answers any questions I have .
- 5 out of 5 starsReviewed on 9/10/2026
He cares about his patients and I know he reads your chart.
- 5 out of 5 starsReviewed on 9/8/2026
Very professional and is constantly evaluating my care to give me the best treatment.
- 5 out of 5 starsReviewed on 9/6/2026
Very professional
- 5 out of 5 starsReviewed on 9/3/2026
I trust Dr Fiddler.
- 5 out of 5 starsReviewed on 8/30/2026
So friendly and Knowledgeable
- 5 out of 5 starsReviewed on 8/29/2026
Troy is a doctor who cares about his patients care no matter the case. I totally trust his decisions concerning my health.
- 5 out of 5 starsReviewed on 8/29/2026
He took over for Dr. Lucas Sheng she retired. He did a great job.
- 5 out of 5 starsReviewed on 8/26/2026
He is awesome very easy to talk to, explains all my questions, I like him very much!!!!
- 5 out of 5 starsReviewed on 8/22/2026
Dr Fiddler is knowledgeable, empathic, and easy to talk to. I look forward to our visits.
- 5 out of 5 starsReviewed on 8/22/2026
He offers advice, not demands. He’s willing to work with me and allowing occasional recesses in my treatment when it becomes overwhelming.
- 5 out of 5 starsReviewed on 8/20/2026
Very thorough talking with him
- 5 out of 5 starsReviewed on 8/19/2026
He is a great doctor
- 5 out of 5 starsReviewed on 8/15/2026
Dr Fiddler was amazing. Dr Fiddler communicated everything I needed to know with thoroughness, compassion and a nice smile.
- 5 out of 5 starsReviewed on 8/13/2026
He has helped me a lot very knowledgeable
- 5 out of 5 starsReviewed on 8/12/2026
Very clear and direct in his message. I really appreciate that.
- 5 out of 5 starsReviewed on 8/7/2026
Dr is very good at listening/talking to the patient. Very on time and discussed medical labs and future plans. Exceptial physician.
- 5 out of 5 starsReviewed on 8/6/2026
Somewhat awkward bedside manner, but very efficient and read through chart.
- 5 out of 5 starsReviewed on 8/1/2026
VERY GOOD
- 5 out of 5 starsReviewed on 7/23/2026
He is a wonderful Dr. and person
- 5 out of 5 starsReviewed on 7/19/2026
Professional knowledgeable caring
- 5 out of 5 starsReviewed on 7/17/2026
Dr.Fidder truly cares about his clients well being.
- 5 out of 5 starsReviewed on 7/11/2026
He has been doing a good job finding what works for me!!
- 5 out of 5 starsReviewed on 6/22/2026
I was so impressed on how well he communicates with his patients. I was so comfortable with Dr Fiddler
- 5 out of 5 starsReviewed on 6/20/2026
terrific doctor in every way.
- 5 out of 5 starsReviewed on 6/19/2026
He is exceptional as a communicator and medial professional.
- 5 out of 5 starsReviewed on 6/7/2026
Professional knowledgeable caring
- 5 out of 5 starsReviewed on 6/4/2026
He seems concerned and easy to talk to always positive and a great attitude.
- 5 out of 5 starsReviewed on 5/28/2026
Amazing physician knowledge pro-active caring
- 5 out of 5 starsReviewed on 5/28/2026
He is super'
- 5 out of 5 starsReviewed on 5/21/2026
He does a good job with me !
- 5 out of 5 starsReviewed on 5/6/2026
Very friendly, competent
- 5 out of 5 starsReviewed on 5/4/2026
Makes visits much easier.
- 5 out of 5 starsReviewed on 4/27/2026
Professional knowledgeable caring
- 5 out of 5 starsReviewed on 4/24/2026
always first class
- 5 out of 5 starsReviewed on 4/23/2026
He shows that he cares and I feel confident in his abilities. He explains my tests very well.
- 5 out of 5 starsReviewed on 4/20/2026
Dr. is exceptional, being a retired physician myself, his medical approach with patients is above 100%..
- 5 out of 5 starsReviewed on 4/17/2026
Amazing caring
- 5 out of 5 starsReviewed on 4/11/2026
He listens
- 5 out of 5 starsReviewed on 4/3/2026
ALWAYS TREATED WELL
- 5 out of 5 starsReviewed on 3/29/2026
Professional knowledgeable caring
- 5 out of 5 starsReviewed on 3/18/2026
Terrific knowledgeable caring
- 5 out of 5 starsReviewed on 3/10/2026
DR FIDDLER TO ME IS VERY CAREING GREAT TO HAVE HIM TAKEING CARE OF MYSELF
- 5 out of 5 starsReviewed on 2/27/2026
Dr. Fiddler provides such positive care.
- 5 out of 5 starsReviewed on 2/26/2026
Very knowledgeable and professional..easy to talk to and discuss details of our medical plan an exceptional care giver and Doctor.
- 4 out of 5 starsReviewed on 2/17/2026
I have been involved with Dr fiddler for the last couple years because of my husband's cancer. And we were happy with the care he received and I received. Nothing like keeping it in the family!
- 5 out of 5 starsReviewed on 2/1/2026
He stays really positive whether it’s good news or bad news which puts my mind at ease.
- 5 out of 5 starsReviewed on 1/30/2026
He’s been very personable and professional
- 5 out of 5 starsReviewed on 1/21/2026
Dr Fiddler has been with me from the start of this horrendous diagnosis. He is pleasant and personable and walks me through every fear or question I may have. I will forever be grateful for him and the help and care he gives and continues to give over the last 3+ years
- 4 out of 5 starsReviewed on 1/21/2026
Dr. Fiddler was always pleasant, courteous and helpful.
- 5 out of 5 starsReviewed on 1/17/2026
He is so knowledgeable and personable. He cares!
- 5 out of 5 starsReviewed on 1/6/2026
Very pleasant and caring
- 5 out of 5 starsReviewed on 12/12/2025
He does a good job with me hebis very knowledgeable
- 5 out of 5 starsReviewed on 12/11/2025
Dr. Fiddler explains things as they are. He is polite and kind.
- 5 out of 5 starsReviewed on 12/6/2025
I like him and he put up with all my joking around.
- 5 out of 5 starsReviewed on 11/30/2025
Dr Fiddler always listens to my concerns and addresses them.