Clinicians affiliated with Northwest Anesthesia Physicians PC
92 clinicians on file with this group · most practice in Eugene-Springfield, OR · PAC ID 3274420138
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
81 clinicians affiliated with Northwest Anesthesia Physicians PC are in the 2024 Medicare Part B data, 76 of them physicians. Data years with affiliated clinicians: 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 · Anesthesiology (76) · Certified Registered Nurse Anesthetist (CRNA) (5)
Specialty links go to the specialty in Eugene-Springfield, OR.
Clinicians affiliated with Northwest Anesthesia Physicians PC, 2024
Alphabetical by last name; 81.
| Name | Specialty | City |
|---|---|---|
| Mathieu L Assercq, MD | Anesthesiology | Springfield, OR |
| Stephen R Aufderheide, MD | Anesthesiology | Springfield, OR |
| Margaret Barnhart, MD | Anesthesiology | Springfield, OR |
| Walter D Bernard, MD | Anesthesiology | Springfield, OR |
| Peter Bissonnette, MD | Anesthesiology | Springfield, OR |
| Jonathan W Bourgeois, MD | Anesthesiology | San Antonio, TX |
| William L Brown, MD | Anesthesiology | Lebanon, NH |
| Robert Carricaburu, MD | Anesthesiology | Springfield, OR |
| Domenico Castaldo, MD | Anesthesiology | Springfield, OR |
| Albert R Cho, D.O. | Anesthesiology | Springfield, OR |
| Roger A Coleman, M.D. | Anesthesiology | Springfield, OR |
| Charles M Cook, MD | Anesthesiology | Springfield, OR |
| Leah Daigle, CRNA | Certified Registered Nurse Anesthetist (CRNA) | Hot Springs, AR |
| Martin A D'Ambrosio, M.D. | Anesthesiology | Springfield, OR |
| Mark Dewsnup, MD | Anesthesiology | Springfield, OR |
| Kristen M Engstrom, C.R.N.A. | Certified Registered Nurse Anesthetist (CRNA) | Clackamas, OR |
| Dierdre C Garton, M.D. | Anesthesiology | Springfield, OR |
| Emily Gerstman, M.D. | Anesthesiology | Springfield, OR |
| Benjamin S Gmelch, MD | Anesthesiology | Springfield, OR |
| Dexter Gregg, MD | Anesthesiology | Springfield, OR |
| John C Guevara, MD | Anesthesiology | Portland, OR |
| Keegan G Guffey, MD | Anesthesiology | Springfield, OR |
| Seth H Gunderson, D.O. | Anesthesiology | Springfield, OR |
| Thomas Habimana, CRNA | Certified Registered Nurse Anesthetist (CRNA) | Indianapolis, IN |
| Christopher B Hagen, M.D. | Anesthesiology | Springfield, OR |
| Daniel R Hagengruber, MD | Anesthesiology | Springfield, OR |
| Timothy B Hanson, MD | Anesthesiology | Newport Beach, CA |
| Holger Hennig, MD | Anesthesiology | Springfield, OR |
| Mark E Hibbard, MD | Anesthesiology | Springfield, OR |
| Jennifer A Hickman, MD | Anesthesiology | Urbana, IL |
| Robert A Hitchcock, D.O., PH.D | Anesthesiology | Springfield, OR |
| Brian P Jones, MD | Anesthesiology | Springfield, OR |
| Setiawan Kamaru, DO | Anesthesiology | Springfield, OR |
| Timothy N Kruse, MD | Anesthesiology | Springfield, OR |
| Alexander R Legg, MD | Anesthesiology | Springfield, OR |
| John B Liddy, M.D. | Anesthesiology | Springfield, OR |
| Harry T Mai, M.D. | Anesthesiology | Tallahassee, FL |
| Richard F Mccoppin, M.D. | Anesthesiology | Springfield, OR |
| Laura A Mcelroy, MD | Anesthesiology | Portland, OR |
| Michael R Moore, MD | Anesthesiology | Springfield, OR |
| Scott B Myrick, M.D. | Anesthesiology | Springfield, OR |
| Evan E New, DO | Anesthesiology | Springfield, OR |
| Luat Nguyen, MD | Anesthesiology | Springfield, OR |
| Gary M Nissen, MD | Anesthesiology | Springfield, OR |
| Stacie H Oh, M.D. | Anesthesiology | Springfield, OR |
| Michael Ostrovsky, MD | Anesthesiology | Daly City, CA |
| Jocelyn A Park, M.D. | Anesthesiology | Springfield, OR |
| Robert F Pellicer, DO | Anesthesiology | Springfield, OR |
| Salvador E Pena, MD PHD | Anesthesiology | Winston Salem, NC |
| Dorothy A Penaloza, M.D. | Anesthesiology | Springfield, OR |
| Patricia M Petzold, CRNA | Certified Registered Nurse Anesthetist (CRNA) | Gainesville, FL |
| James Pillard, CRNA | Certified Registered Nurse Anesthetist (CRNA) | Memphis, TN |
| Carly Porat, MD | Anesthesiology | Springfield, OR |
| Alex O Raiskin, MD | Anesthesiology | Springfield, OR |
| Michael Roll, M.D. | Anesthesiology | Springfield, OR |
| Ilan J Rothman, MD | Anesthesiology | Portland, OR |
| Andrew S Rushton, MD | Anesthesiology | Springfield, OR |
| Alexander H Ryder, DO | Anesthesiology | Springfield, OR |
| Patrick J Salisbury, MD | Anesthesiology | Springfield, OR |
| Adrienne M Samar, M.D. | Anesthesiology | Springfield, OR |
| Lakshmi Sai Manasa Sarvepalli, MD | Anesthesiology | Springfield, OR |
| Todd C Seymour, MD | Anesthesiology | Murray, UT |
| Mark Shillington, M.D. | Anesthesiology | Salt Lake City, UT |
| Alexander W Shune, M.D. | Anesthesiology | Springfield, OR |
| Rick B Siel, MD | Anesthesiology | Springfield, OR |
| Andrew J Sikorsky, MD | Anesthesiology | Vancouver, WA |
| Ryan L Smith, M.D. | Anesthesiology | Springfield, OR |
| Susan M Smith, MD | Anesthesiology | Summit, WI |
| Brian St. George, MD | Anesthesiology | Springfield, OR |
| Steven R Surrett, MD | Anesthesiology | Eugene, OR |
| John B Traul, M.D. | Anesthesiology | Pocatello, ID |
| Martin Velasquez, M.D. | Anesthesiology | Springfield, OR |
| Jon S Williams, MD | Anesthesiology | Springfield, OR |
| David A Wilson, MD | Anesthesiology | Bellingham, WA |
| Dean J Withroder, MD | Anesthesiology | Springfield, OR |
| Kenneth A Woodward, M.D. | Anesthesiology | Springfield, OR |
| Guihong Xu, M.D. | Anesthesiology | Tucson, AZ |
| Ximeng Yang, MD | Anesthesiology | Springfield, OR |
| Caroline Zawilski, M.D. | Anesthesiology | Springfield, OR |
| Liye B Zhang, MD | Anesthesiology | Springfield, OR |
| Alix N Zuleta Alarcon, M.D. | Anesthesiology | Springfield, OR |
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