Troy A. Fiddler, M.D.
Hematology & Oncology Physician · Billings, MT
Troy A. Fiddler, M.D. is a hematology & oncology physician with a practice address in Billings, Montana, and NPI 1730130311, issued on May 16, 2006. Check the license (Montana 11070, as entered in NPPES) on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Troy A. Fiddler
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- 11070 MT
7565A WY
Self-reported in NPPES; status is on the state search - Practice location
- 1315 Golden Valley Cir, Billings, MT 59102
- Phone
- (406) 238-6290
- Enumerated
- May 16, 2006
- Record last updated
- Sep 8, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (406) 238-6961
- Medicaid IDs
- 0079237 MT
123140500 WY - Medicare enrollment
- Enrolled (PECOS I20060606000285); accepts Medicare assignment
- Medical or professional school
- Oregon Health Sciences University School Of Medicine, 2000
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 44 in Montana → Look up another NPI →
Also registered at 1315 Golden Valley Cir
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Carrie Barnhart, PHARMDOncology Pharmacist1902584857
- David Christianson, M.D.Hematology & Oncology Physician1770565871
- Patrick Cobb, M.D.Hematology & Oncology Physician1710968219
- Aidan Guthridge, PHARMDOncology Pharmacist1609536804
- Erin Juedeman, RPHOncology Pharmacist1114870219
- Frank Lamm, MDRadiation Oncology Physician1417949033
Verify Troy A. Fiddler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical Examiners
Search for license 11070Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.5 times the Medicare Part D claims of the average hematology & oncology physician in 2024
2,190 Medicare Part D claims for 329 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims. 112 claims were for opioids.
Most prescribed
- Anastrozole271 claims
- Prednisone168 claims
- Abiraterone Acetate157 claims
- Ondansetron Hcl106 claims
- Gabapentin84 claims
- Potassium Chloride83 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.
Bills Medicare through one group practice
- Scl Health MontanaBillings, MT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Troy A. Fiddler among 44 hematology & oncology physician records in Montana
Troy A. Fiddler, M.D. is one of 44 hematology & oncology physician records with a practice address in Montana. 80% 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 16% of them.
- NPI issued2006 · 16% of these records are older, 36% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2000 · median 2000 among the 28 with a school on file
- Record last updated2010 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Montana
There are 44 hematology & oncology physician records in Montana.
All 44 in Montana → Every provider in Billings → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- David Christianson, M.D.Billings, MT 591021770565871
- Patrick Cobb, M.D.Billings, MT 591021710968219
- Roy Hall, M.D.Billings, MT 591021417953019
- Martin Lucas, M.D.Billings, MT 591021881676971
- Michael Kidd, M.D.Billings, MT 591011093940736
- Roger Santala, MDBillings, MT 591011396828059
- Brock Whittenberger, MDBillings, MT 591011033293444
- Aaron Franke, M.D.Sidney, MT 592701730568403
Common questions
What is Troy A. Fiddler, M.D.'s NPI number?
Troy A. Fiddler, M.D.'s National Provider Identifier (NPI) is 1730130311, issued on May 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Troy A. Fiddler, M.D. located?
The NPPES record lists a practice address at 1315 Golden Valley Cir, Billings, MT, 59102. Phone: (406) 238-6290. Providers update this record themselves, so call before visiting.
How can I verify Troy A. Fiddler, M.D.'s license?
NPPES lists Montana license number 11070, 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 Troy A. Fiddler, M.D. prescribe under Medicare Part D?
In 2024, Troy A. Fiddler, M.D. had 2,190 Medicare Part D claims for 329 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.