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Cornea and External Diseases Specialists in Oregon

Data updated monthly · Last refresh October 2026

10 Cornea and External Diseases Specialist providers practice in Oregon, including 2 (20%) 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.

10providers
2telehealth
Portlandtop city

Cornea and External Diseases Specialist by city in Oregon

Choose a city to see providers there.

Cornea and External Diseases Specialist in Portland8 providers
Cornea and External Diseases Specialist in Medford2 providers

Where Cornea and External Diseases Specialists in Oregon practice

From CMS Medicare enrollment records covering 9 of the 10 providers listed here (90%). Providers who do not bill Medicare are not included in these figures.

Largest practice groups

Group (as registered with Medicare)Cornea and External Diseases SpecialistsAll clinicians in groupMain city
University Professional Services31,683Portland
Legacy Good Samaritan Hospital and Medical Center3190Portland
Medical Eye Center Inc.215Medford

Hospitals where they hold privileges

HospitalCityOwnershipCMS star ratingCornea and External Diseases Specialists affiliated
Ohsu Hospital and ClinicsPortlandNonprofit3 of 56
Legacy Good Samaritan Medical CenterPortlandNonprofit4 of 53

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.

Cornea and External Diseases Specialist 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. John Welling, MD
Medford, OR · $286 in drug and device payments (2025) · (541) 779-4711
Dr. Matthew Oliva, MD
Medford, OR · $209 in drug and device payments (2025) · (541) 779-4711
Dr. Afshan Nanji, M.D.
Portland, OR · No drug or device payments recorded (2025) · (503) 494-3000
Dr. Ashlin Joye
Portland, OR · $209 in drug and device payments (2025) · (503) 413-7036
Dr. David Demill, M.D.
Portland, OR · $323 in drug and device payments (2025) · (503) 413-8498
Dr. John Clements, MD
Portland, OR · $2,216 in drug and device payments (2025) · (503) 494-3000
Dr. Mark Terry, MD
Portland, OR · $14,298 in drug and device payments (2025) · (503) 413-8202
Dr. Michael Straiko, M.D.
Portland, OR · $11,658 in drug and device payments (2025) · Telehealth · (503) 413-8202
Dr. Roma Pegany, MD
Portland, OR · $400 in drug and device payments (2025) · Telehealth · (503) 494-3000
Dr. Winston Chamberlain, MD, PHD
Portland, OR · $15,690 in drug and device payments (2025) · (503) 494-3000

Common questions

How many Cornea and External Diseases Specialist providers are in Oregon?

There are 10 Cornea and External Diseases Specialist providers with active NPI records practicing in Oregon, according to federal NPPES data refreshed monthly.

Do Cornea and External Diseases Specialist providers in Oregon offer telehealth?

Yes. 2 of the 10 Cornea and External Diseases Specialist providers in Oregon (about 20%) report offering telehealth services in CMS data.

Which cities in Oregon have the most Cornea and External Diseases Specialist providers?

Portland (8), Medford (2) have the highest concentration of Cornea and External Diseases Specialist providers in Oregon.

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.

Which hospitals do Cornea and External Diseases Specialists in Oregon work at?

According to CMS facility affiliation records, the Oregon hospitals where the most Cornea and External Diseases Specialists hold privileges are Ohsu Hospital and Clinics in Portland; Legacy Good Samaritan Medical Center in Portland.

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Related

Sources: NPPES (CMS), Doctors and Clinicians national files, CMS Open Payments 2025. Updated monthly. Records are public federal data and are not verified credentials, licensure checks, or endorsements. This directory is informational and not medical advice. How we build this directory. Are you a Cornea and External Diseases Specialist in Oregon? Get featured.