Whether you’re looking for a primary care physician or a specialist, we make it easy to find the healthcare provider you need. Mercy's Providers and Visiting Specialists are listed below by specialty. The directory also allows you to sort by last name or practice.

Allergy Arkapol Piyamahunt, MD Heart & Lung Clinic Visiting Specialist Anesthesiology C. David Brown, M.D. Mercy Medical Center Mercy Medical Staff David N Skurdal, M.D. Mercy Medical Center Mercy Medical Staff Zeljko S Radic, M.D., MS Mercy Medical Center Mercy Medical Staff Cardiology Boban Mathew, MD Heart & Lung Clinic Visiting Specialist Ear, Nose & Throat Morris E Bellis, M.D. Mercy Specialty Clinic Mercy Medical Staff Emergency Medicine Antonio M Carbonell, M.D. Express Care Clinic Mercy Medical Staff Michael Boulter, M.D. Emergency Room Mercy Medical Staff Family Practice A. Marc Nielsen, M.D. Craven-Hagan Clinic Mercy Medical Staff David E Keene, M.D. Craven-Hagan Clinic Mercy Medical Staff Glenn A Wiens, M.D. Craven-Hagan Clinic Mercy Medical Staff James A Kennedy, M.D. Trinity Community Clinic - Western Dakota Mercy Medical Staff Mark A Olson, M.D. Trinity Community Clinic - Western Dakota Mercy Medical Staff Robert G Kemp, M.D. Craven-Hagan Clinic Mercy Medical Staff William J Brunsman, M.D. Trinity Community Clinic - Western Dakota Mercy Medical Staff Wm. Curtis Small, M.D. Craven-Hagan Clinic Mercy Medical Staff General Surgery Brett K Vibeto, M.D. Mercy Specialty Clinic Mercy Medical Staff Wayne L Anderson, M.D., FACS Wayne L. Anderson, MD, FACS Mercy Medical Staff Gynecology Joseph E Adducci, M.D. Craven-Hagan Clinic Mercy Medical Staff Internal Medicine Cory R Miller, M.D. Craven-Hagan Clinic Mercy Medical Staff Michael L Kroll, MD Craven-Hagan Clinic Mercy Medical Staff Medical Oncologists Brock Whittenberger, MD Billings Clinic Visiting Specialist Roger Santala, MD Billings Clinic Visiting Specialist Nephrology Kelvin Hsu, MD St. Alexius Medical Center Visiting Specialist Neurology Richard Arazi, MD Heart & Lung Clinic Visiting Specialist Obstetrics/Gynecology Beverly Tong, M.D. Great Plains Women's Health Center, PC Mercy Medical Staff Don Shuwarger, M.D. Great Plains Women's Health Center, PC Mercy Medical Staff Li Loo, M.D. Great Plains Women's Health Center, PC Mercy Medical Staff Sara R Solberg, M.D. Great Plains Women's Health Center, PC Mercy Medical Staff Ophthalmology J. E Reeves, M.D. Trinity Regional Eyecare - Williston Basin Mercy Medical Staff Mark C Raymond, M.D. Trinity Regional Eyecare - Williston Basin Mercy Medical Staff Mark E Morin, M.D. Trinity Regional Eyecare - Williston Basin Mercy Medical Staff Orthopaedic Surgeon David P Lanoue, M.D. Mercy Specialty Clinic Mercy Medical Staff Roxanne R Keene, M.D. Mercy Specialty Clinic Mercy Medical Staff Pathology Franklin McCoy, Jr., M.D. Laboratory Mercy Medical Staff John B Andelin, M.D. Laboratory Mercy Medical Staff Pediatric Diabetes Fred E Gunville, MD Billings Clinic Visiting Specialist Pediatrics Lois Freisleben-Cook, M.D. Comprehensive Pediatric Care, PC Mercy Medical Staff Podiatry Karen Rinehart, MD Foot Care Associates Visiting Specialist Michael LaPan, MD Sidney Health Center Visiting Specialist Radiation Oncologist Kevin B Collins, M.D. Trinity CancerCare Center Visiting Specialist Radiology Glenn P Moradian, M.D. Radiology (Imaging Services) Mercy Medical Staff Urology Salem S Shahin, M.D. Salem S. Shahin, M.D. Mercy Medical Staff Billings Clinic Brock Whittenberger, MD Medical Oncologists Billings Clinic Fred E Gunville, MD Pediatric Diabetes Billings Clinic Roger Santala, MD Medical Oncologists Billings Clinic Comprehensive Pediatric Care, PC Lois Freisleben-Cook, M.D. Pediatrics Comprehensive Pediatric Care, PC Craven-Hagan Clinic A. Marc Nielsen, M.D. Family Practice Craven-Hagan Clinic Cory R Miller, M.D. Internal Medicine Craven-Hagan Clinic David E Keene, M.D. Family Practice Craven-Hagan Clinic Glenn A Wiens, M.D. Family Practice Craven-Hagan Clinic Joseph E Adducci, M.D. Gynecology Craven-Hagan Clinic Michael L Kroll, MD Internal Medicine Craven-Hagan Clinic Robert G Kemp, M.D. Family Practice Craven-Hagan Clinic Wm. Curtis Small, M.D. Family Practice Craven-Hagan Clinic Emergency Room Michael Boulter, M.D. Emergency Medicine Emergency Room Express Care Clinic Antonio M Carbonell, M.D. Emergency Medicine Express Care Clinic Foot Care Associates Karen Rinehart, MD Podiatry Foot Care Associates Great Plains Women's Health Center, PC Beverly Tong, M.D. Obstetrics/Gynecology Great Plains Women's Health Center, PC Don Shuwarger, M.D. Obstetrics/Gynecology Great Plains Women's Health Center, PC Li Loo, M.D. Obstetrics/Gynecology Great Plains Women's Health Center, PC Sara R Solberg, M.D. Obstetrics/Gynecology Great Plains Women's Health Center, PC Heart & Lung Clinic Arkapol Piyamahunt, MD Allergy Heart & Lung Clinic Boban Mathew, MD Cardiology Heart & Lung Clinic Richard Arazi, MD Neurology Heart & Lung Clinic Laboratory Franklin McCoy, Jr., M.D. Pathology Laboratory John B Andelin, M.D. Pathology Laboratory Mercy Medical Center C. David Brown, M.D. Anesthesiology Mercy Medical Center David N Skurdal, M.D. Anesthesiology Mercy Medical Center Zeljko S Radic, M.D., MS Anesthesiology Mercy Medical Center Mercy Specialty Clinic Brett K Vibeto, M.D. General Surgery Mercy Specialty Clinic David P Lanoue, M.D. Orthopaedic Surgeon Mercy Specialty Clinic Morris E Bellis, M.D. Ear, Nose & Throat Mercy Specialty Clinic Roxanne R Keene, M.D. Orthopaedic Surgeon Mercy Specialty Clinic Radiology (Imaging Services) Glenn P Moradian, M.D. Radiology Radiology (Imaging Services) Salem S. Shahin, M.D. Salem S Shahin, M.D. Urology Salem S. Shahin, M.D. Sidney Health Center Michael LaPan, MD Podiatry Sidney Health Center St. Alexius Medical Center Kelvin Hsu, MD Nephrology St. Alexius Medical Center Trinity CancerCare Center Kevin B Collins, M.D. Radiation Oncologist Trinity CancerCare Center Trinity Community Clinic - Western Dakota James A Kennedy, M.D. Family Practice Trinity Community Clinic - Western Dakota Mark A Olson, M.D. Family Practice Trinity Community Clinic - Western Dakota William J Brunsman, M.D. Family Practice Trinity Community Clinic - Western Dakota Trinity Regional Eyecare - Williston Basin J. E Reeves, M.D. Ophthalmology Trinity Regional Eyecare - Williston Basin Mark C Raymond, M.D. Ophthalmology Trinity Regional Eyecare - Williston Basin Mark E Morin, M.D. Ophthalmology Trinity Regional Eyecare - Williston Basin Wayne L. Anderson, MD, FACS Wayne L Anderson, M.D., FACS General Surgery Wayne L. Anderson, MD, FACS Provider Adducci, Joseph E, M.D. Gynecology Craven-Hagan Clinic Andelin, John B, M.D. Pathology Laboratory Anderson, Wayne L, M.D., FACS General Surgery Wayne L. Anderson, MD, FACS Arazi, Richard , MD Neurology Heart & Lung Clinic Bellis, Morris E, M.D. Ear, Nose & Throat Mercy Specialty Clinic Boulter, Michael , M.D. Emergency Medicine Emergency Room Brown, C. David , M.D. Anesthesiology Mercy Medical Center Brunsman, William J, M.D. Family Practice Trinity Community Clinic - Western Dakota Carbonell, Antonio M, M.D. Emergency Medicine Express Care Clinic Collins, Kevin B, M.D. Radiation Oncologist Trinity CancerCare Center Freisleben-Cook, Lois , M.D. Pediatrics Comprehensive Pediatric Care, PC Gunville, Fred E, MD Pediatric Diabetes Billings Clinic Hsu, Kelvin , MD Nephrology St. Alexius Medical Center Keene, David E, M.D. Family Practice Craven-Hagan Clinic Keene, Roxanne R, M.D. Orthopaedic Surgeon Mercy Specialty Clinic Kemp, Robert G, M.D. Family Practice Craven-Hagan Clinic Kennedy, James A, M.D. Family Practice Trinity Community Clinic - Western Dakota Kroll, Michael L, MD Internal Medicine Craven-Hagan Clinic Lanoue, David P, M.D. Orthopaedic Surgeon Mercy Specialty Clinic LaPan, Michael , MD Podiatry Sidney Health Center Loo, Li , M.D. Obstetrics/Gynecology Great Plains Women's Health Center, PC Mathew, Boban , MD Cardiology Heart & Lung Clinic McCoy, Jr., Franklin , M.D. Pathology Laboratory Miller, Cory R, M.D. Internal Medicine Craven-Hagan Clinic Moradian, Glenn P, M.D. Radiology Radiology (Imaging Services) Morin, Mark E, M.D. Ophthalmology Trinity Regional Eyecare - Williston Basin Nielsen, A. Marc , M.D. Family Practice Craven-Hagan Clinic Olson, Mark A, M.D. Family Practice Trinity Community Clinic - Western Dakota Piyamahunt, Arkapol , MD Allergy Heart & Lung Clinic Radic, Zeljko S, M.D., MS Anesthesiology Mercy Medical Center Raymond, Mark C, M.D. Ophthalmology Trinity Regional Eyecare - Williston Basin Reeves, J. E, M.D. Ophthalmology Trinity Regional Eyecare - Williston Basin Rinehart, Karen , MD Podiatry Foot Care Associates Santala, Roger , MD Medical Oncologists Billings Clinic Shahin, Salem S, M.D. Urology Salem S. Shahin, M.D. Shuwarger, Don , M.D. Obstetrics/Gynecology Great Plains Women's Health Center, PC Skurdal, David N, M.D. Anesthesiology Mercy Medical Center Small, Wm. Curtis , M.D. Family Practice Craven-Hagan Clinic Solberg, Sara R, M.D. Obstetrics/Gynecology Great Plains Women's Health Center, PC Tong, Beverly , M.D. Obstetrics/Gynecology Great Plains Women's Health Center, PC Vibeto, Brett K, M.D. General Surgery Mercy Specialty Clinic Whittenberger, Brock , MD Medical Oncologists Billings Clinic Wiens, Glenn A, M.D. Family Practice Craven-Hagan Clinic