Anesthesiologists in Montana
Data updated monthly · Last refresh October 2026
226 Anesthesiology providers practice in Montana, including 4 (2%) offering telehealth. The largest concentration is in Billings. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.
226providers
4telehealth
Billingstop city
Anesthesiology by city in Montana
Choose a city to see providers there.
Anesthesiology providers in Montana
Listed by city, largest first. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.
Dr. Marvin Warren, M.D.Billings, MT · No drug or device payments recorded (2025) ·
(406) 896-2447 Dr. Matthew SherrodBillings, MT · No drug or device payments recorded (2025) ·
(817) 995-6359 Dr. Michael Casimir, MDBillings, MT · No drug or device payments recorded (2025) ·
(631) 379-2104 Dr. Michael Hovland, M.D.Billings, MT · No drug or device payments recorded (2025) ·
(406) 254-0709 Dr. Michael O'neil, M.D.Billings, MT · $144 in drug and device payments (2025) ·
(406) 896-2447 Dr. Michael SchweitzerBillings, MT · No drug or device payments recorded (2025) ·
(406) 254-0707 Dr. Millie Boyd, MDBillings, MT · No drug or device payments recorded (2025) ·
(406) 238-2210 Dr. Nancy Sweeney, M.D.Billings, MT · No drug or device payments recorded (2025) ·
(406) 248-7186 Dr. Patrick Duey, MDBillings, MT · No drug or device payments recorded (2025) ·
(406) 896-2447 Dr. Paula Roos, M.D.Billings, MT · No drug or device payments recorded (2025) ·
(406) 896-2447 Dr. Rodney Lee, M.D.Billings, MT · No drug or device payments recorded (2025) ·
(406) 896-2447 Dr. Shea Snyder, M.D.Billings, MT · No drug or device payments recorded (2025) ·
(406) 254-0707 Dr. Stephen Ball, M.D.Billings, MT · $125 in drug and device payments (2025) ·
(406) 254-0707 Dr. Steven Kriner, D.O.Billings, MT · $51 in drug and device payments (2025) ·
(406) 896-2447 Dr. Teresa Otto, M.D.Billings, MT · No drug or device payments recorded (2025) ·
(406) 896-2447 Dr. Thomas Robinson, MDBillings, MT · No drug or device payments recorded (2025) ·
(406) 254-0707 Dr. Tysen Trujillo, M.D.Billings, MT · $46 in drug and device payments (2025) ·
(406) 254-0704 Dr. Zeferino Arroyo, D.O.Billings, MT · $19 in drug and device payments (2025) ·
(406) 254-0707 Dr. Andrew Lyons, MDBozeman, MT · No drug or device payments recorded (2025) ·
(406) 582-4963 Dr. Brian Mcguire, MDBozeman, MT · No drug or device payments recorded (2025) ·
(800) 461-3981 Dr. Cheri Conner, MDBozeman, MT · No drug or device payments recorded (2025) ·
(800) 461-3981 Dr. Christopher Thacker, M.D.Bozeman, MT · No drug or device payments recorded (2025) ·
(208) 631-0219 Dr. David Joly, MDBozeman, MT · No drug or device payments recorded (2025) ·
(406) 599-9561 Dr. Dierdre Strigenz, M.D.Bozeman, MT · No drug or device payments recorded (2025) ·
(406) 585-5000 Dr. Erik Bodtker, MDBozeman, MT · No drug or device payments recorded (2025) ·
(800) 461-3981 Dr. Fiona Buckley, M.D.Bozeman, MT · No drug or device payments recorded (2025) ·
(406) 585-5000 Dr. Jeffrey Bolka, M.D.Bozeman, MT · No drug or device payments recorded (2025) ·
(406) 414-5000 Dr. John Meyer, MDBozeman, MT · No drug or device payments recorded (2025) ·
(800) 461-3981 Dr. Kevin Bozarth, MDBozeman, MT · No drug or device payments recorded (2025) ·
(800) 461-3981 Dr. Lawrence Alvarado, MDBozeman, MT · No drug or device payments recorded (2025) ·
(406) 599-9561 Dr. Matthew Fritsch, M.D.Bozeman, MT · No drug or device payments recorded (2025) ·
(406) 414-5000 Dr. Orville Mann, MDBozeman, MT · No drug or device payments recorded (2025) ·
(800) 461-3981 Dr. Peter O'reilly, M.D.Bozeman, MT · No drug or device payments recorded (2025) ·
(406) 586-3316 Dr. Philip Cory, MDBozeman, MT · No drug or device payments recorded (2025) ·
(406) 587-3523 Dr. Richard Barton, MDBozeman, MT · No drug or device payments recorded (2025) ·
(800) 461-3981 Dr. Susan Paglia, MDBozeman, MT · No drug or device payments recorded (2025) ·
(800) 461-3981 Dr. Wallace Hayasaka, M.D.Bozeman, MT · No drug or device payments recorded (2025) ·
(602) 262-8900 Dr. Zachary Hesse, M.D.Bozeman, MT · No drug or device payments recorded (2025) ·
(406) 585-5000 Dr. Danae Aplas, MDButte, MT · No drug or device payments recorded (2025) ·
(406) 723-2500 Dr. Joseph Murphy, MDClancy, MT · No drug or device payments recorded (2025) ·
(406) 490-3833 Dr. Albert Whitesell, M.DGreat Falls, MT · No drug or device payments recorded (2025) ·
(406) 455-5000 Dr. Benjamin Ross, MDGreat Falls, MT · No drug or device payments recorded (2025) ·
(406) 455-5000 Dr. Bradley HillGreat Falls, MT · No drug or device payments recorded (2025) ·
(406) 731-8888 Dr. Brian Bertha, MDGreat Falls, MT · No drug or device payments recorded (2025) ·
(406) 731-8888 Dr. Bryce Mcbride, DOGreat Falls, MT · No drug or device payments recorded (2025) ·
(406) 731-8888 Dr. Collette Jones, MDGreat Falls, MT · No drug or device payments recorded (2025) ·
(406) 731-8888 Dr. David Crumley, MDGreat Falls, MT · No drug or device payments recorded (2025) ·
(406) 455-5000 Dr. Deeann Allen, MDGreat Falls, MT · No drug or device payments recorded (2025) ·
(406) 727-6311 Dr. Derik Neilson, D.O.Great Falls, MT · No drug or device payments recorded (2025) ·
(406) 731-8888 Common questions
How many Anesthesiology providers are in Montana?There are 226 Anesthesiology providers with active NPI records practicing in Montana, according to federal NPPES data refreshed monthly.
Do Anesthesiology providers in Montana offer telehealth?Yes. 4 of the 226 Anesthesiology providers in Montana (about 2%) report offering telehealth services in CMS data.
Which cities in Montana have the most Anesthesiology providers?Billings (67), Missoula (62), Great Falls (34) have the highest concentration of Anesthesiology providers in Montana.
How many Anesthesiology providers in Montana received drug or device company payments?43 of 226 Anesthesiology providers in Montana (19%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.
Where does this data come from?Provider counts and profiles come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.
Do most Anesthesiologists in Montana work in independent practices or large health systems?Among 149 Anesthesiologists in Montana enrolled in Medicare, 0% bill through a solo or small practice with fewer than 10 clinicians, 62% through a mid-size group of 10 to 99, and 38% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do Anesthesiologists in Montana work at?According to CMS facility affiliation records, the Montana hospitals where the most Anesthesiologists hold privileges are St. Patrick Hospital in Missoula; Community Medical Center in Missoula; Billings Clinic Hospital in Billings.
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