Nephrologists in Oregon
Data updated monthly · Last refresh October 2026
134 Nephrology providers practice in Oregon, including 61 (46%) 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.
134providers
61telehealth
Portlandtop city
Nephrology by city in Oregon
Choose a city to see providers there.
Where Nephrologists in Oregon practice
From CMS Medicare enrollment records covering 87 of the 134 providers listed here (65%). Providers who do not bill Medicare are not included in these figures.
6%solo or small practice (under 10 clinicians)
38%mid-size group (10 to 99)
56%large group or health system (100+)
Largest practice groups
| Group (as registered with Medicare) | Nephrologists | All clinicians in group | Main city |
| University Professional Services | 21 | 1,683 | Portland |
| Northwest Renal Clinic Inc. | 21 | 39 | Portland |
| Kaiser Foundation Health Plan of the Northwest | 12 | 1,805 | Clackamas |
| Kidney Care Physicians LLC | 7 | 11 | Salem |
| Eugene Springfield Nephrology Associates PC | 6 | 14 | Springfield |
Hospitals where they hold privileges
| Hospital | City | Ownership | CMS star rating | Nephrologists affiliated |
| Ohsu Hospital and Clinics | Portland | Nonprofit | 3 of 5 | 36 |
| Adventist Health Portland | Portland | Nonprofit | 4 of 5 | 19 |
| Hillsboro Medical Center | Hillsboro | Nonprofit | 3 of 5 | 16 |
| Providence Portland Medical Center | Portland | Nonprofit | 4 of 5 | 13 |
| Salem Hospital | Salem | Nonprofit | 3 of 5 | 12 |
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.
Nephrology 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. Jennifer Gunnell, M.D.Bend, OR · No drug or device payments recorded (2025) ·
(541) 706-6892 Dr. Michael Feldman, M.D.Bend, OR · No drug or device payments recorded (2025) · Telehealth ·
(541) 382-2811 Dr. Molly Tilley, M.D.Bend, OR · No drug or device payments recorded (2025) · Telehealth ·
(541) 382-2811 Dr. Richard Kebler, M.D.Bend, OR · No drug or device payments recorded (2025) ·
(541) 382-2811 Dr. Robert Pinnick, MDBend, OR · No drug or device payments recorded (2025) · Telehealth ·
(541) 382-2811 Dr. Russell Massine, M.D.Bend, OR · No drug or device payments recorded (2025) · Telehealth ·
(541) 382-2811 Dr. Sarah Struthers, M.D.Bend, OR · No drug or device payments recorded (2025) · Telehealth ·
(541) 382-4900 Dr. Cynthia Tai, M.D.Clackamas, OR · No drug or device payments recorded (2025) · Telehealth ·
(800) 813-2000 Dr. Leslie O'meara, M.D.Clackamas, OR · No drug or device payments recorded (2025) ·
(503) 652-2880 Dr. Scott Miyake, M.D.Clackamas, OR · No drug or device payments recorded (2025) ·
(800) 813-2000 Dr. Deanne Leonard, M.D.Corvallis, OR · No drug or device payments recorded (2025) ·
(541) 768-6930 Dr. Margaret King, M.D.Corvallis, OR · No drug or device payments recorded (2025) ·
(541) 768-6930 Dr. Mohammed Mohammed, M.D.Corvallis, OR · No drug or device payments recorded (2025) ·
(541) 753-7473 Dr. Patricia Centron Vinales, M.D.Corvallis, OR · No drug or device payments recorded (2025) ·
(541) 768-6930 Dr. Pavan Kumar Gona, MDCorvallis, OR · $217 in drug and device payments (2025) · Telehealth ·
(541) 768-6930 Dr. Poojitha Beravol, M.D.Corvallis, OR · No drug or device payments recorded (2025) · Telehealth ·
(541) 768-6930 Dr. Tyler Andrea, DOCorvallis, OR · $41 in drug and device payments (2025) · Telehealth ·
(541) 768-6930 Dr. Zain Haq, MDCorvallis, OR · $287 in drug and device payments (2025) · Telehealth ·
(541) 768-6930 Dr. Fadi Akoum, M.D.Hermiston, OR · No drug or device payments recorded (2025) ·
(541) 667-3661 Dr. Jennifer Schneider, M.D.Hillsboro, OR · No drug or device payments recorded (2025) ·
(503) 571-0748 Dr. Meenakshi Narasimhamurthy, MDHillsboro, OR · No drug or device payments recorded (2025) ·
(503) 430-0497 Dr. Rubin Chandran, MDHillsboro, OR · $383 in drug and device payments (2025) · Telehealth ·
(034) 300-4975 Dr. Sarah Zapata, MDHillsboro, OR · No drug or device payments recorded (2025) · Telehealth ·
(800) 813-2000 Dr. Sonia Bynum, M.D.Hillsboro, OR · No drug or device payments recorded (2025) ·
(800) 813-2000 Dr. Dag Kremer, M.D.Mcminnville, OR · No drug or device payments recorded (2025) ·
(503) 434-1159 Dr. Ryan Griffiths, MDMcminnville, OR · $18 in drug and device payments (2025) · Telehealth ·
(503) 434-1159 Dr. Bruce Vanzee, MDMedford, OR · No drug or device payments recorded (2025) ·
(541) 773-3863 Dr. Darcie Sternenberg, MDMedford, OR · No drug or device payments recorded (2025) ·
(541) 773-3863 Dr. June Symens, M.D.Medford, OR · No drug or device payments recorded (2025) ·
(541) 821-6090 Dr. Cathryn Wise, MDMilwaukie, OR · No drug or device payments recorded (2025) ·
(503) 786-1167 Dr. Christopher Thomas, M.D.Milwaukie, OR · No drug or device payments recorded (2025) · Telehealth ·
(503) 786-1600 Dr. Leah Swetnam, MDMilwaukie, OR · No drug or device payments recorded (2025) ·
(503) 786-1150 Dr. Micah Thorp, DOMilwaukie, OR · $20 in drug and device payments (2025) · Telehealth ·
(503) 232-4465 Dr. Mindy Tseng, M.D.Milwaukie, OR · No drug or device payments recorded (2025) ·
(503) 786-1150 Dr. Pei-li Wang, M.D.Milwaukie, OR · No drug or device payments recorded (2025) · Telehealth ·
(503) 786-1600 Dr. Susan Kauffman, M.D.Milwaukie, OR · No drug or device payments recorded (2025) ·
(503) 786-1600 Dr. Hammad QadirNorth Bend, OR · $80 in drug and device payments (2025) ·
(541) 808-2412 Dr. Ajay Pradhan, DOPortland, OR · No drug or device payments recorded (2025) ·
(503) 229-7976 Dr. Alexander Hawkins, MDPortland, OR · $247 in drug and device payments (2025) · Telehealth ·
(503) 229-7976 Dr. Amber Hertz-tang, MDPortland, OR · No drug or device payments recorded (2025) · Telehealth ·
(503) 292-7704 Dr. Amy Hackett, MDPortland, OR · No drug or device payments recorded (2025) ·
(503) 772-1174 Dr. Amy Li, MDPortland, OR · No drug or device payments recorded (2025) · Telehealth ·
(503) 494-3442 Dr. Angelo De Mattos, MDPortland, OR · No drug or device payments recorded (2025) ·
(503) 494-3442 Dr. Arnold Israelit, MDPortland, OR · No drug or device payments recorded (2025) ·
(503) 284-1937 Dr. Arthur Greenberg, M.D.Portland, OR · No drug or device payments recorded (2025) ·
(503) 494-3442 Dr. Aumyot Prongdong, MDPortland, OR · No drug or device payments recorded (2025) ·
(503) 256-0877 Dr. Basheer Kummangal, M.D.Portland, OR · $97 in drug and device payments (2025) ·
(503) 494-8311 Dr. Chun Khai Chong, MDPortland, OR · $358 in drug and device payments (2025) · Telehealth ·
(503) 235-5509 Dr. Claire Kassakian, MDPortland, OR · $22 in drug and device payments (2025) · Telehealth ·
(503) 235-5509 Dr. Clayton Smiley, MDPortland, OR · No drug or device payments recorded (2025) · Telehealth ·
(503) 229-7976 Conditions Nephrology providers in Oregon commonly treat
Patients often search by condition rather than specialty. These are conditions typically managed by Nephrology providers. Individual practices vary, so confirm with the provider before booking.
- Chronic kidney disease
- Kidney stones
- Dialysis care
- High blood pressure
Common questions
How many Nephrology providers are in Oregon?There are 134 Nephrology providers with active NPI records practicing in Oregon, according to federal NPPES data refreshed monthly.
Do Nephrology providers in Oregon offer telehealth?Yes. 61 of the 134 Nephrology providers in Oregon (about 46%) report offering telehealth services in CMS data.
Which cities in Oregon have the most Nephrology providers?Portland (73), Salem (11), Corvallis (8) have the highest concentration of Nephrology providers in Oregon.
How many Nephrology providers in Oregon received drug or device company payments?41 of 134 Nephrology providers in Oregon (31%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.
What conditions do Nephrology providers in Oregon treat?Nephrology providers commonly treat chronic kidney disease, kidney stones, dialysis care, high blood pressure 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 Nephrologists in Oregon work in independent practices or large health systems?Among 87 Nephrologists in Oregon enrolled in Medicare, 6% bill through a solo or small practice with fewer than 10 clinicians, 38% through a mid-size group of 10 to 99, and 56% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do Nephrologists in Oregon work at?According to CMS facility affiliation records, the Oregon hospitals where the most Nephrologists hold privileges are Ohsu Hospital and Clinics in Portland; Adventist Health Portland in Portland; Hillsboro Medical Center in Hillsboro.
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