Hematologists and Oncologists in Oregon
Data updated monthly · Last refresh October 2026
137 Hematology & Oncology providers practice in Oregon, including 64 (47%) 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.
137providers
64telehealth
Portlandtop city
Hematology & Oncology by city in Oregon
Choose a city to see providers there.
Where Hematologists and Oncologists in Oregon practice
From CMS Medicare enrollment records covering 87 of the 137 providers listed here (64%). Providers who do not bill Medicare are not included in these figures.
6%solo or small practice (under 10 clinicians)
36%mid-size group (10 to 99)
59%large group or health system (100+)
Largest practice groups
| Group (as registered with Medicare) | Hematologists and Oncologists | All clinicians in group | Main city |
| University Professional Services | 14 | 1,683 | Portland |
| Asante | 14 | 141 | Medford |
| Asante Three Rivers Medical Center LLC | 14 | 98 | Grants Pass |
| Kaiser Foundation Health Plan of the Northwest | 12 | 1,805 | Portland |
| Northwest Cancer Specialists PC | 11 | 70 | Portland |
Hospitals where they hold privileges
| Hospital | City | Ownership | CMS star rating | Hematologists and Oncologists affiliated |
| Ohsu Hospital and Clinics | Portland | Nonprofit | 3 of 5 | 16 |
| Asante Three Rivers Medical Center | Grants Pass | Nonprofit | 3 of 5 | 14 |
| Asante Rogue Regional Medical Center | Medford | Nonprofit | 4 of 5 | 14 |
| Salem Hospital | Salem | Nonprofit | 3 of 5 | 11 |
| Providence Portland Medical Center | Portland | Nonprofit | 4 of 5 | 10 |
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.
Hematology & Oncology 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. Sarunas Sliesoraitis, DO, PHARM D Dr. Jeyanthi Ramanarayanan, MDAstoria, OR · $5,494 in drug and device payments (2025) · Telehealth ·
(503) 338-4085 Dr. Frederick Ey, M.D.Beaverton, OR · No drug or device payments recorded (2025) · Telehealth ·
(503) 203-1000 Dr. Gary Takahashi, M.D.Beaverton, OR · No drug or device payments recorded (2025) ·
(503) 203-1000 Dr. Tzann Fang, MDBeaverton, OR · $132 in drug and device payments (2025) ·
(971) 262-9000 Dr. Alexander Schlitt, DO Dr. Andrew Chen, D.O.Bend, OR · $90 in drug and device payments (2025) · Telehealth ·
(541) 706-5800 Dr. Brian Erickson, MDBend, OR · $214 in drug and device payments (2025) · Telehealth ·
(541) 706-5800 Dr. Bryden Considine, DOBend, OR · $14 in drug and device payments (2025) · Telehealth ·
(541) 706-5911 Dr. Christina Fitzmaurice, M.D.Bend, OR · No drug or device payments recorded (2025) · Telehealth ·
(541) 706-5800 Dr. Natasha Tiffany, M.D.Bend, OR · $295 in drug and device payments (2025) · Telehealth ·
(541) 706-5800 Dr. Pradip Rustagi, MDBend, OR · No drug or device payments recorded (2025) ·
(541) 706-5800 Dr. Richard Reed, MDBend, OR · No drug or device payments recorded (2025) · Telehealth ·
(541) 706-5800 Dr. Russell Lewis, M.D.Bend, OR · No drug or device payments recorded (2025) · Telehealth ·
(541) 706-5911 Dr. Todd Clover, MDBend, OR · No drug or device payments recorded (2025) · Telehealth ·
(541) 382-4321 Dr. Yale Sacks, M.D.Central Point, OR · No drug or device payments recorded (2025) ·
(541) 772-1559 Dr. Bret Cook, MDCoos Bay, OR · $426 in drug and device payments (2025) ·
(541) 267-5151 Dr. Don Hill, M.D., F.A.C.P.Coos Bay, OR · $712 in drug and device payments (2025) ·
(541) 269-8111 Dr. Bo Wang, MDCorvallis, OR · $84,023 in drug and device payments (2025) · Telehealth ·
(541) 683-5001 Dr. Ike Onwere, MDCorvallis, OR · $832 in drug and device payments (2025) ·
(541) 768-4950 Dr. Keith Wells, MDCorvallis, OR · $789 in drug and device payments (2025) · Telehealth ·
(541) 754-1256 Dr. Peter Kenyon, M.D.Corvallis, OR · No drug or device payments recorded (2025) ·
(541) 768-4950 Dr. Stephen Neville, MDCorvallis, OR · No drug or device payments recorded (2025) ·
(541) 754-1150 Dr. Barry Mckenzie, MDEugene, OR · No drug or device payments recorded (2025) ·
(541) 686-2851 Dr. Christopher Yasenchak, M.D.Eugene, OR · $5,368 in drug and device payments (2025) · Telehealth ·
(541) 683-5001 Dr. Daniel Guy, MDEugene, OR · $32 in drug and device payments (2025) · Telehealth ·
(541) 683-5001 Dr. Jae Lee, MDEugene, OR · No drug or device payments recorded (2025) ·
(541) 683-5001 Dr. James Butrynski, M.D.Eugene, OR · No drug or device payments recorded (2025) · Telehealth ·
(541) 683-5001 Dr. James Fitzgibbons, MDEugene, OR · No drug or device payments recorded (2025) ·
(541) 683-5001 Dr. Luke Fletcher, MDEugene, OR · $13,657 in drug and device payments (2025) · Telehealth ·
(541) 683-5001 Dr. Matthew Lonergan, MDEugene, OR · No drug or device payments recorded (2025) · Telehealth ·
(541) 683-5001 Dr. Miho Dougherty, M.D.Eugene, OR · No drug or device payments recorded (2025) · Telehealth ·
(541) 683-5001 Dr. Veronica Roa, MDEugene, OR · No drug or device payments recorded (2025) ·
(541) 683-5001 Dr. Joseph SedilloGrants Pass, OR · No drug or device payments recorded (2025) ·
(541) 774-5853 Dr. Frank Santoli, MDGresham, OR · $206 in drug and device payments (2025) ·
(971) 262-9500 Dr. Ted Huang, M.D.Gresham, OR · No drug or device payments recorded (2025) · Telehealth ·
(503) 661-1112 Dr. Gerald Gibbs, M.D.Hillsboro, OR · $74 in drug and device payments (2025) ·
(503) 640-3687 Dr. Eric Anderson, M.D., PH.D.Hood River, OR · No drug or device payments recorded (2025) ·
(541) 387-1338 Dr. Patrick Archie, MDLa Grande, OR · No drug or device payments recorded (2025) ·
(541) 963-2328 Dr. Seymour Bronstein, M.D.La Grande, OR · No drug or device payments recorded (2025) ·
(541) 963-2828 Dr. Catherine O'brien, M.D.Mcminnville, OR · $465 in drug and device payments (2025) ·
(503) 435-6590 Dr. Aleksandra Sander, M.D.Medford, OR · $160 in drug and device payments (2025) · Telehealth ·
(541) 789-4673 Dr. Alison Savage, MDMedford, OR · $41 in drug and device payments (2025) · Telehealth ·
(541) 789-4673 Dr. Ashish Dwary, MBBSMedford, OR · $16,664 in drug and device payments (2025) · Telehealth ·
(541) 789-4673 Dr. Brett Poisson, MDMedford, OR · $208 in drug and device payments (2025) ·
(541) 789-4673 Dr. Charles Dibb, MDMedford, OR · No drug or device payments recorded (2025) ·
(541) 774-5853 Dr. Emre Koca, M.DMedford, OR · $123 in drug and device payments (2025) · Telehealth ·
(541) 789-4673 Dr. Gerald Ahmann, MDMedford, OR · No drug or device payments recorded (2025) ·
(541) 774-5853 Conditions Hematology & Oncology providers in Oregon commonly treat
Patients often search by condition rather than specialty. These are conditions typically managed by Hematology & Oncology providers. Individual practices vary, so confirm with the provider before booking.
- Breast cancer
- Lung cancer
- Lymphoma
- Leukemia
- Anemia
- Blood disorders
Common questions
How many Hematology & Oncology providers are in Oregon?There are 137 Hematology & Oncology providers with active NPI records practicing in Oregon, according to federal NPPES data refreshed monthly.
Do Hematology & Oncology providers in Oregon offer telehealth?Yes. 64 of the 137 Hematology & Oncology providers in Oregon (about 47%) report offering telehealth services in CMS data.
Which cities in Oregon have the most Hematology & Oncology providers?Portland (57), Medford (19), Eugene (11) have the highest concentration of Hematology & Oncology providers in Oregon.
How many Hematology & Oncology providers in Oregon received drug or device company payments?66 of 137 Hematology & Oncology providers in Oregon (48%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.
What conditions do Hematology & Oncology providers in Oregon treat?Hematology & Oncology providers commonly treat breast cancer, lung cancer, lymphoma, leukemia, anemia and related conditions. Individual practices vary, so confirm with the provider before booking.
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 Hematologists and Oncologists in Oregon work in independent practices or large health systems?Among 87 Hematologists and Oncologists in Oregon enrolled in Medicare, 6% bill through a solo or small practice with fewer than 10 clinicians, 36% through a mid-size group of 10 to 99, and 59% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do Hematologists and Oncologists in Oregon work at?According to CMS facility affiliation records, the Oregon hospitals where the most Hematologists and Oncologists hold privileges are Ohsu Hospital and Clinics in Portland; Asante Three Rivers Medical Center in Grants Pass; Asante Rogue Regional Medical Center in Medford.
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