Internal Medicine Providers in Clackamas, OR
Browse 101 Internal Medicine providers listed in NPPES with a practice address in Clackamas, Oregon.
How Clackamas compares with the U.S.
101 active clinicians in Internal Medicine list a practice address in Clackamas, OR in the NPI registry.
Population data for this city are not available, so we do not compare it with the U.S. rate.
100% of clinicians in Internal Medicine in Clackamas listed in the CMS Medicare file (74 of 74) accept Medicare assignment. That is similar to the Oregon share of 98%.
What is Medicare assignment?
A clinician who accepts Medicare assignment agrees to take the Medicare-approved amount as full payment for services that Original Medicare covers. You usually still pay your deductible and coinsurance. This comes from the CMS Doctors and Clinicians file and applies to Original Medicare only. Medicare Advantage plans have their own provider networks. It does not show whether a clinician is taking new patients.
Some clinicians are listed as "may accept assignment," which means they can decide case by case. Clinicians without an assignment flag, or who are not in the CMS file, are not counted as accepting assignment. That does not mean they refuse Medicare. Ask the office before your visit.
14% of clinicians in Internal Medicine in Clackamas listed in the CMS Medicare file (10 of 74) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is lower than the Oregon share of 33%.
About the telehealth indicator
The telehealth indicator comes from CMS. It marks clinicians whose recent paid Medicare claims include services delivered by telehealth. It means a clinician has provided some services by telehealth, not that every visit can be done online. A clinician without the indicator may still offer telehealth, for example to patients who are not on Medicare. Ask the office which visits can be done by video or phone.
These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.
Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@true-medinfo.com ยท Methodology
Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026. Medicare assignment and telehealth indicators: CMS Doctors and Clinicians National Downloadable File.
Internal Medicine Medicare (PECOS) Enrollment & Ordering Eligibility
Medicare enrollment and order/referring eligibility listed by CMS for Internal Medicine practitioners in Clackamas, OR
Dr. Samer Abufadil , MD
Internal Medicine
Dr. Usman Ahmad , DO
Internal Medicine
Dr. Tatyana Aleksandrova , MD
Internal Medicine
Dr. Michael Wayne Armstrong , DO
Internal Medicine
Dr. Lisa A Ashcraft , MD
Internal Medicine
Dr. Kirthika Balakrishnan , MD
Internal Medicine
Dr. Sarah Larsen Barr , MD
Internal Medicine
Dr. Patra Ann Behary , MD
Internal Medicine
Dr. Rachel Jaye Brenner , MD
Internal Medicine
Dr. Marie Sherleen Nera Brigham , MD
Internal Medicine
Dr. Stephanie W Cha , MD
Internal Medicine
Dr. Cynthia A Chan , MD
Internal Medicine
Dr. Frank Y Chen , MD
Internal Medicine
Dr. Christine Eun Jin Choo , MD
Internal Medicine
Dr. Jane Y Chung , MD
Internal Medicine
Dr. Christopher Michael Clements , MD
Internal Medicine
Dr. Alla Comardelle , MD
Internal Medicine
Dr. Valerie Anne Downey , MD
Internal Medicine
Dr. Andrew H Felcher , MD
Internal Medicine
Dr. Gregory P Garcia , MD
Internal Medicine
Frequently Asked Questions about Internal Medicine in Clackamas
Each practitioner profile shows the NUCC taxonomy code and any state license number the practitioner reported to NPPES, plus a link to the Oregon licensing board lookup. NPPES entries are self-reported; current license status is published only by the state board.
This list shows NPI records that are active in NPPES. A deactivated NPI keeps its profile with the deactivation date and practice history; find it with the site search by name or NPI number.
Other Specialties in Clackamas
Internal Medicine Providers in Other Oregon Cities
Cities with the most listed practitioners first.