Clinicians affiliated with Providence Health And Services Oregon

53 clinicians on file with this group · most practice in Portland-Vancouver-Hillsboro, OR-WA · PAC ID 6103728753

Affiliation snapshotOctober 2, 2026CMS Doctors and Clinicians file, current snapshot (no end-of-2024 archive), applied to 2024
Activity year2024Medicare Part B claims, Original Medicare fee-for-service

52 clinicians affiliated with Providence Health And Services Oregon are in the 2024 Medicare Part B data, 52 of them physicians. Data years with affiliated clinicians: 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024.

Each clinician's exact figures are in their Physician Report, from their page; a specialty's figures in this market are in a Market Comparison. View sample report · Already purchased? Open your report

Affiliated clinicians by specialty, 2024

All specialties · Pathology (22) · Cardiology (19) · Emergency Medicine (3) · Internal Medicine (3) · Advanced Heart Failure and Transplant Cardiology (1) · Gastroenterology (1) · General Surgery (1) · Interventional Cardiology (1) · Neurology (1)

Specialty links go to the specialty in Portland-Vancouver-Hillsboro, OR-WA.

Clinicians affiliated with Providence Health And Services Oregon, 2024

Alphabetical by last name; 52.

NameSpecialtyCity
James G Beckerman, MDCardiologyPortland, OR
Jason S Bensch, M.D.CardiologyPortland, OR
Douglas P Blackall, MDPathologyPortland, OR
Matthew R Bowser, MDEmergency MedicineLincoln City, OR
Xiaohong Cai, MDPathologyPortland, OR
Todd A Caulfield, MDInterventional CardiologyPortland, OR
Athena L Chen, MDPathologyBoston, MA
Crispin H Davies, MDCardiologyPortland, OR
William M Davies, M.D.CardiologyOregon City, OR
Sheeten B Doshi, M.D.GastroenterologyTigard, OR
James B Durham, MDPathologyPortland, OR
Theodore A Foster, D.O., M.P.HInternal MedicineNewberg, OR
Matthew C Frank, M.D.PathologyPortland, OR
Paula A Gerber-Gore, MDNeurologyPortland, OR
Mathew S Greenberg, MDPathologyPortland, OR
Dale D Hirsch, MDCardiologyPortland, OR
Thatcher S Houldin, MDInternal MedicinePortland, OR
Xiaoyan Huang, MDCardiologyPortland, OR
Sanaa Hussain, MDPathologyAlbuquerque, NM
Vassil Kaimaktchiev, M.D.PathologyHood River, OR
Veselina B Korcheva, M.D.PathologyPortland, OR
Christian P Lanciault, MD, PHDPathologyPittsburgh, PA
Michael E Layoun, MDCardiologyPortland, OR
Melissa Li, MDPathologyPortland, OR
Melissa Lin, M.D.General SurgeryOregon City, OR
Robert J Litt, M.D.CardiologyPortland, OR
Maritza Martel, MDPathologyPortland, OR
Alexander M Morss, MDCardiologyPortland, OR
Nathan J PaulsonPathologyNew Haven, CT
Geraldine A Peterdy, MDPathologyLiberty Lake, WA
Aly Rahimtoola, MDCardiologyPortland, OR
Sriram Ravi, MDCardiologyPortland, OR
Travis L Rice-Stitt, MDPathologyPortland, OR
Steven J Riley, M.D.CardiologyOregon City, OR
Mark N Roberts, D.O.Internal MedicineMilwaukie, OR
Alicia M Ross, M.D.Advanced Heart Failure and Transplant CardiologyHood River, OR
William D Ryan, M.D.PathologyPortland, OR
Aaron B Schoenkerman, MDCardiologyPortland, OR
David A Schroeder, M.D.CardiologyPortland, OR
Lian R Shaw, MDCardiologyNewberg, OR
Jian Shen, M.D.PathologyPortland, OR
Olivia L Snir, M.D.PathologyPortland, OR
Lori TamCardiologyPortland, OR
James E Thompson, M.D.Emergency MedicinePortland, OR
Kevin R Turner, M.D./PH.D.PathologyPortland, OR
Craig R Walsh, MD MPHCardiologyPortland, OR
Su Wang, MDPathologyPortland, OR
Geoffrey M Wilson, MDCardiologyPortland, OR
Barrett J Woodhall, MDEmergency MedicinePrineville, OR
Hong Xiao, MD, PHDPathologyBoston, MA
Lisa K Yao, M.DCardiologyPortland, OR
Yibin Zhang, MDPathologySan Gabriel, CA

Practice locations

Listed practice locations in Oregon.

Source: CMS Doctors and Clinicians National Downloadable File, snapshot October 2, 2026.

Membership comes from the CMS Doctors and Clinicians file. CMS does not publish an end-of-year archive of it, so the current snapshot is applied to every data year. A clinician affiliated with several groups or hospitals appears on each of their pages. How group pages are built · Limitations