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 David N Skurdal, M.D. Anesthesiology Services Mercy Medical Staff James Lewis, CRNA Anesthesiology Services Mercy Medical Staff Karen L. Johnson, CRNA Anesthesiology Services Mercy Medical Staff Kristi J. Johnson, CRNA Anesthesiology Services Mercy Medical Staff Maria E. Tebbetts, M.D. Anesthesiology Services Mercy Medical Staff Melissa Lewis, CRNA Anesthesiology Services Mercy Medical Staff Zeljko S Radic, M.D., MS Mercy Medical Center Mercy Medical Staff Behavioral Health Debra Lukenbill, PMHCNS-BC Behavioral Health Services Mercy Medical Staff Cardiology Boban Mathew, MD Heart & Lung Clinic Visiting Specialist Emergency Medicine Brenna L Kerr, PA-C Emergency Room Mercy Medical Staff Carissa A Niederhauser, PA Emergency Room Mercy Medical Staff James Martin, MD Emergency Room Mercy Medical Staff Michael J Macuga, M.D. Emergency Room Mercy Medical Staff Family Practice Cherise A Norby, APRN, FNP Craven-Hagan Clinic Mercy Medical Staff David E Keene, M.D. Craven-Hagan Clinic Mercy Medical Staff Duane B Mortenson, PA-C Craven-Hagan Clinic Mercy Medical Staff Glenn A Wiens, M.D. Craven-Hagan Clinic Mercy Medical Staff Heidi L Grondahl, RN - WHCNP Craven-Hagan Clinic Mercy Medical Staff James A Kennedy, M.D. Trinity Community Clinic - Western Dakota Mercy Medical Staff Kristen Nardozzi, D.O. Trinity Medical Group Visiting Specialist Lisa M Peterson, PA - C Craven-Hagan Clinic 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 Shu-Ming Wang, MD Craven-Hagan Clinic 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 Mercy Specialty Clinic Mercy Medical Staff Zachary N Bastian, MD Mercy Specialty Clinic Mercy Medical Staff Gynecology Joseph E Adducci, M.D. Craven-Hagan Clinic Mercy Medical Staff Hospitalist Austin McCoy, M.D. Hospitalist/ER Mercy Medical Staff Paul B. Andeline, M.D. Hospitalist Visiting Specialist Samuel F Andelin, MD Hospitalist / ER Mercy Medical Staff Internal Medicine Cory R Miller, M.D. Craven-Hagan Clinic Mercy Medical Staff Interventional Pain Management Christine J Hoglund, D.O. Mercy Specialty Clinic Mercy Medical Staff Medical Oncologists Brock Whittenberger, MD Billings Clinic Visiting Specialist Roger Santala, MD Billings Clinic Visiting Specialist Nephrology Radu Raducu, MD St. Alexius Medical Center Visiting Specialist Neuro Surgery William Spire, MD St. Vincent Regional Neuro Science Center Visiting Specialist Neurology Jeffrey Mosser, MD St. Vincent Regional Neuro Science Center Visiting Specialist Richard Arazi, MD Heart & Lung Clinic Visiting Specialist Obstetrics/Gynecology Beverly Tong, 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 Occupational Health Gary Caplan, M.D. Occupational Health Clinic 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 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 J.A. Grorud, M.D. Craven-Hagan Clinic Mercy Medical Staff Podiatry Karen Rinehart, MD Foot Care Associates Visiting Specialist Michael LaPan, MD Sidney Health Center Visiting Specialist Radiation Oncologist Douglas L. Clark, M.D. Cancer Center Mercy Medical Staff Radiology A.M. Reddy, M.D. Radiology (Imaging Services) Mercy Medical Staff Leszek Jaszczak, M.D. Radiology (Imaging Services) Mercy Medical Staff Urology Salem S Shahin, M.D. Urology Mercy Medical Staff Anesthesiology Services David N Skurdal, M.D. Anesthesiology Anesthesiology Services James Lewis, CRNA Anesthesiology Anesthesiology Services Karen L. Johnson, CRNA Anesthesiology Anesthesiology Services Kristi J. Johnson, CRNA Anesthesiology Anesthesiology Services Maria E. Tebbetts, M.D. Anesthesiology Anesthesiology Services Melissa Lewis, CRNA Anesthesiology Anesthesiology Services Behavioral Health Services Debra Lukenbill, PMHCNS-BC Behavioral Health Behavioral Health Services Billings Clinic Brock Whittenberger, MD Medical Oncologists Billings Clinic Fred E Gunville, MD Pediatric Diabetes Billings Clinic Roger Santala, MD Medical Oncologists Billings Clinic Cancer Center Douglas L. Clark, M.D. Radiation Oncologist Cancer Center Craven-Hagan Clinic Cherise A Norby, APRN, FNP 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 Duane B Mortenson, PA-C Family Practice Craven-Hagan Clinic Glenn A Wiens, M.D. Family Practice Craven-Hagan Clinic Heidi L Grondahl, RN - WHCNP Family Practice Craven-Hagan Clinic J.A. Grorud, M.D. Pediatrics Craven-Hagan Clinic Joseph E Adducci, M.D. Gynecology Craven-Hagan Clinic Lisa M Peterson, PA - C Family Practice Craven-Hagan Clinic Robert G Kemp, M.D. Family Practice Craven-Hagan Clinic Shu-Ming Wang, MD Family Practice Craven-Hagan Clinic Wm. Curtis Small, M.D. Family Practice Craven-Hagan Clinic Emergency Room Brenna L Kerr, PA-C Emergency Medicine Emergency Room Carissa A Niederhauser, PA Emergency Medicine Emergency Room James Martin, MD Emergency Medicine Emergency Room Michael J Macuga, M.D. Emergency Medicine Emergency Room 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 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 Hospitalist Paul B. Andeline, M.D. Hospitalist Hospitalist Hospitalist / ER Samuel F Andelin, MD Hospitalist Hospitalist / ER Hospitalist/ER Austin McCoy, M.D. Hospitalist Hospitalist/ER Laboratory Franklin McCoy, Jr., M.D. Pathology Laboratory John B Andelin, M.D. Pathology Laboratory 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 Christine J Hoglund, D.O. Interventional Pain Management Mercy Specialty Clinic David P Lanoue, M.D. Orthopaedic Surgeon Mercy Specialty Clinic Roxanne R Keene, M.D. Orthopaedic Surgeon Mercy Specialty Clinic Wayne L Anderson, M.D., FACS General Surgery Mercy Specialty Clinic Zachary N Bastian, MD General Surgery Mercy Specialty Clinic Occupational Health Clinic Gary Caplan, M.D. Occupational Health Occupational Health Clinic Radiology (Imaging Services) A.M. Reddy, M.D. Radiology Radiology (Imaging Services) Leszek Jaszczak, M.D. Radiology Radiology (Imaging Services) Sidney Health Center Michael LaPan, MD Podiatry Sidney Health Center St. Alexius Medical Center Radu Raducu, MD Nephrology St. Alexius Medical Center St. Vincent Regional Neuro Science Center Jeffrey Mosser, MD Neurology St. Vincent Regional Neuro Science Center William Spire, MD Neuro Surgery St. Vincent Regional Neuro Science 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 Trinity Medical Group Kristen Nardozzi, D.O. Family Practice Trinity Medical Group 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 Urology Salem S Shahin, M.D. Urology Urology Provider Adducci, Joseph E, M.D. Gynecology Craven-Hagan Clinic Andelin, John B, M.D. Pathology Laboratory Andelin, Samuel F, MD Hospitalist Hospitalist / ER Andeline, Paul B. , M.D. Hospitalist Hospitalist Anderson, Wayne L, M.D., FACS General Surgery Mercy Specialty Clinic Arazi, Richard , MD Neurology Heart & Lung Clinic Bastian, Zachary N, MD General Surgery Mercy Specialty Clinic Caplan, Gary , M.D. Occupational Health Occupational Health Clinic Clark, Douglas L., M.D. Radiation Oncologist Cancer Center Grondahl, Heidi L , RN - WHCNP Family Practice Craven-Hagan Clinic Grorud, J.A. , M.D. Pediatrics Craven-Hagan Clinic Gunville, Fred E, MD Pediatric Diabetes Billings Clinic Hoglund, Christine J, D.O. Interventional Pain Management Mercy Specialty Clinic Jaszczak, Leszek , M.D. Radiology Radiology (Imaging Services) Johnson, Karen L., CRNA Anesthesiology Anesthesiology Services Johnson, Kristi J., CRNA Anesthesiology Anesthesiology Services 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 Kerr, Brenna L, PA-C Emergency Medicine Emergency Room Lanoue, David P, M.D. Orthopaedic Surgeon Mercy Specialty Clinic LaPan, Michael , MD Podiatry Sidney Health Center Lewis, James , CRNA Anesthesiology Anesthesiology Services Lewis, Melissa , CRNA Anesthesiology Anesthesiology Services Loo, Li , M.D. Obstetrics/Gynecology Great Plains Women's Health Center, PC Lukenbill, Debra , PMHCNS-BC Behavioral Health Behavioral Health Services Macuga, Michael J, M.D. Emergency Medicine Emergency Room Martin, James , MD Emergency Medicine Emergency Room Mathew, Boban , MD Cardiology Heart & Lung Clinic McCoy, Austin , M.D. Hospitalist Hospitalist/ER McCoy, Jr., Franklin , M.D. Pathology Laboratory Miller, Cory R, M.D. Internal Medicine Craven-Hagan Clinic Mortenson, Duane B, PA-C Family Practice Craven-Hagan Clinic Mosser, Jeffrey , MD Neurology St. Vincent Regional Neuro Science Center Nardozzi, Kristen , D.O. Family Practice Trinity Medical Group Niederhauser, Carissa A, PA Emergency Medicine Emergency Room Norby, Cherise A , APRN, FNP Family Practice Craven-Hagan Clinic Olson, Mark A, M.D. Family Practice Trinity Community Clinic - Western Dakota Peterson, Lisa M, PA - C Family Practice Craven-Hagan Clinic Piyamahunt, Arkapol , MD Allergy Heart & Lung Clinic Radic, Zeljko S, M.D., MS Anesthesiology Mercy Medical Center Raducu, Radu , MD Nephrology St. Alexius Medical Center Raymond, Mark C, M.D. Ophthalmology Trinity Regional Eyecare - Williston Basin Reddy, A.M. , M.D. Radiology Radiology (Imaging Services) 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 Urology Skurdal, David N, M.D. Anesthesiology Anesthesiology Services Small, Wm. Curtis , M.D. Family Practice Craven-Hagan Clinic Solberg, Sara R, M.D. Obstetrics/Gynecology Great Plains Women's Health Center, PC Spire, William , MD Neuro Surgery St. Vincent Regional Neuro Science Center Tebbetts, Maria E., M.D. Anesthesiology Anesthesiology Services Tong, Beverly , M.D. Obstetrics/Gynecology Great Plains Women's Health Center, PC Vibeto, Brett K, M.D. General Surgery Mercy Specialty Clinic Wang, Shu-Ming , MD Family Practice Craven-Hagan Clinic Whittenberger, Brock , MD Medical Oncologists Billings Clinic Wiens, Glenn A, M.D. Family Practice Craven-Hagan Clinic