Colorectal Surgeons in Oregon
Data updated monthly · Last refresh October 2026
31 Colon & Rectal Surgery providers practice in Oregon, including 12 (39%) offering telehealth. The largest concentration is in Portland. 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.
31providers
12telehealth
Portlandtop city
Colon & Rectal Surgery by city in Oregon
Choose a city to see providers there.
Where Colorectal Surgeons in Oregon practice
From CMS Medicare enrollment records covering 27 of the 31 providers listed here (87%). Providers who do not bill Medicare are not included in these figures.
11%solo or small practice (under 10 clinicians)
4%mid-size group (10 to 99)
85%large group or health system (100+)
Largest practice groups
| Group (as registered with Medicare) | Colorectal Surgeons | All clinicians in group | Main city |
| The Oregon Clinic, PC | 8 | 353 | Portland |
| University Professional Services | 5 | 1,683 | Portland |
| Kaiser Foundation Health Plan of the Northwest | 3 | 1,805 | Clackamas |
| Legacy Clinics LLC | 3 | 714 | Portland |
| Northwest Center for Colorectal Health, LLC | 2 | 3 | Portland |
Hospitals where they hold privileges
| Hospital | City | Ownership | CMS star rating | Colorectal Surgeons affiliated |
| Providence Portland Medical Center | Portland | Nonprofit | 4 of 5 | 9 |
| Ohsu Hospital and Clinics | Portland | Nonprofit | 3 of 5 | 7 |
| Providence St Vincent Medical Center | Portland | Nonprofit | 4 of 5 | 5 |
| Legacy Good Samaritan Medical Center | Portland | Nonprofit | 4 of 5 | 5 |
| Columbia Memorial Hospital | Astoria | For-profit | Not rated | 3 |
Sources: CMS Doctors and Clinicians (August 2026) and Facility Affiliation files (August 2026); hospital ownership type and overall star rating from CMS Hospital General Information (July 2026). A clinician in several groups is counted once, in the largest group they bill through. Ownership type is what the hospital reports to CMS; it does not show private equity or other investor ownership. How we build this directory.
Colon & Rectal Surgery providers in Oregon
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. David Parsons, M.D.Clackamas, OR · No drug or device payments recorded (2025) ·
(503) 786-8435 Dr. Jeffrey Barton, M.D.Clackamas, OR · No drug or device payments recorded (2025) ·
(800) 813-2000 Dr. Sungeyun Cho, MDClackamas, OR · No drug or device payments recorded (2025) ·
(503) 813-2000 Dr. Michael Doorly, MD, MSHillsboro, OR · $1,288 in drug and device payments (2025) ·
(503) 681-4310 Dr. Alizah Rotramel, M.D.Portland, OR · $38 in drug and device payments (2025) · Telehealth ·
(503) 413-5525 Dr. Amanda Hayman, MD, MPHPortland, OR · $41 in drug and device payments (2025) · Telehealth ·
(503) 281-0561 Dr. Carey WickhamPortland, OR · $3,792 in drug and device payments (2025) ·
(503) 281-0561 Dr. Christopher Longaker, M.D.Portland, OR · No drug or device payments recorded (2025) ·
(503) 644-2934 Dr. Daniel Herzig, MDPortland, OR · $415 in drug and device payments (2025) · Telehealth ·
(503) 494-4373 Dr. David O'brien, MDPortland, OR · $162 in drug and device payments (2025) ·
(503) 281-0561 Dr. Douglas Khoury, MDPortland, OR · $500 in drug and device payments (2025) ·
(503) 494-4373 Dr. Jeffrey Albright, MDPortland, OR · No drug or device payments recorded (2025) · Telehealth ·
(503) 494-4373 Dr. Joseph Frankhouse, M.D.Portland, OR · No drug or device payments recorded (2025) · Telehealth ·
(503) 222-1615 Dr. Khayree Butler, M.D.Portland, OR · $14,257 in drug and device payments (2025) · Telehealth ·
(503) 413-5514 Dr. Kim Lu, MDPortland, OR · No drug or device payments recorded (2025) · Telehealth ·
(503) 494-4373 Dr. Leonardo Garcia, M.D.Portland, OR · $789 in drug and device payments (2025) ·
(503) 281-0561 Dr. Mark Whiteford, MDPortland, OR · $118 in drug and device payments (2025) · Telehealth ·
(503) 281-0561 Dr. Megan Cavanaugh, MDPortland, OR · No drug or device payments recorded (2025) ·
(503) 216-5380 Dr. Michael Munly, M.D.Portland, OR · $17 in drug and device payments (2025) ·
(503) 297-1351 Dr. Olga Garcia, D.O.Portland, OR · No drug or device payments recorded (2025) ·
(503) 413-5514 Dr. Paul Kaminsky, MD/PHDPortland, OR · $7,047 in drug and device payments (2025) · Telehealth ·
(503) 413-5514 Dr. Rehan Ahmad, MDPortland, OR · $24 in drug and device payments (2025) ·
(503) 281-0561 Dr. Richard Kalu, MD, MPHPortland, OR · $55 in drug and device payments (2025) ·
(971) 254-9884 Dr. Rodrigo Pedraza Rosales, M.D.Portland, OR · $4,236 in drug and device payments (2025) ·
(503) 281-0561 Dr. Roy Breen, MDPortland, OR · No drug or device payments recorded (2025) ·
(503) 281-0561 Dr. Sandy Fang, M.D.Portland, OR · $3,497 in drug and device payments (2025) · Telehealth ·
(503) 494-8311 Dr. Scott Browning, MDPortland, OR · $16 in drug and device payments (2025) ·
(503) 216-5380 Dr. Vassiliki Tsikitis, MDPortland, OR · $1,814 in drug and device payments (2025) · Telehealth ·
(503) 494-4373 Dr. Phuong Nguyen, M.D.Redmond, OR · $239 in drug and device payments (2025) · Telehealth ·
(541) 548-7761 Dr. Duc Vo, M.D.Springfield, OR · $66 in drug and device payments (2025) ·
(541) 865-1800 Dr. Maile Parker, MDSpringfield, OR · $368 in drug and device payments (2025) ·
(541) 345-2205 Common questions
How many Colon & Rectal Surgery providers are in Oregon?There are 31 Colon & Rectal Surgery providers with active NPI records practicing in Oregon, according to federal NPPES data refreshed monthly.
Do Colon & Rectal Surgery providers in Oregon offer telehealth?Yes. 12 of the 31 Colon & Rectal Surgery providers in Oregon (about 39%) report offering telehealth services in CMS data.
Which cities in Oregon have the most Colon & Rectal Surgery providers?Portland (24), Clackamas (3), Springfield (2) have the highest concentration of Colon & Rectal Surgery providers in Oregon.
How many Colon & Rectal Surgery providers in Oregon received drug or device company payments?21 of 31 Colon & Rectal Surgery providers in Oregon (68%) 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 Colorectal Surgeons in Oregon work in independent practices or large health systems?Among 27 Colorectal Surgeons in Oregon enrolled in Medicare, 11% bill through a solo or small practice with fewer than 10 clinicians, 4% through a mid-size group of 10 to 99, and 85% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do Colorectal Surgeons in Oregon work at?According to CMS facility affiliation records, the Oregon hospitals where the most Colorectal Surgeons hold privileges are Providence Portland Medical Center in Portland; Ohsu Hospital and Clinics in Portland; Providence St Vincent Medical Center in Portland.
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