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Internal Medicine Providers in Clackamas, OR

Browse 101 Internal Medicine providers listed in NPPES with a practice address in Clackamas, Oregon.

101 Healthcare Providers

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 Registry addresses can be out of date.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

Source: CMS PECOS
PECOS Enrolled Specialists 81 In Clackamas, OR
Part B Lab & Imaging Eligible 81 Diagnostic Referrals
DME Ordering Eligible 84 Durable Medical Equipment
Home Health Agency Referrals 81 HHA Ordering Eligible
Showing 1โ€“20 of 101 providers
With recent CMS data first, then Aโ€“Z

Dr. Samer Abufadil , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
10180 Se Sunnyside Rd, Clackamas, OR 970158970
Phone: 5036522880
NPI Identifier 1750437653
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Dr. Usman Ahmad , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment
10180 Se Sunnyside Rd, Clackamas, OR 970158970
Phone: 5038132000
NPI Identifier 1326288697
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Dr. Tatyana Aleksandrova , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
9800 Se Sunnyside Rd, Clackamas, OR 970159750
Phone: 5032218000
NPI Identifier 1740719103
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Dr. Michael Wayne Armstrong , DO

Internal Medicine

Active NPI Status
10100 Se Sunnyside Rd, Clackamas, OR 970158970
Phone: 5036522880
NPI Identifier 1740742337
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Dr. Lisa A Ashcraft , MD

Internal Medicine

Active NPI Status
10180 Se Sunnyside Rd, Clackamas, OR 970158970
Phone: 5036522880
NPI Identifier 1801851746
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Dr. Kirthika Balakrishnan , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
10180 Se Sunnyside Rd, Clackamas, OR 970158970
Phone: 5036522880
NPI Identifier 1881655256
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Dr. Sarah Larsen Barr , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
10180 Se Sunnyside Rd, Clackamas, OR 970158970
Phone: 5036522880
NPI Identifier 1780002246
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Dr. Patra Ann Behary , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
10180 Se Sunnyside Rd, Kaiser Sunnyside Medical Center, Hospitalist Department, Clackamas, OR 970158970
Phone: 5036522880
NPI Identifier 1083716773
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Dr. Rachel Jaye Brenner , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
9900 Se Sunnyside Rd, Clackamas, OR 970159777
Phone: 8007352900
NPI Identifier 1407382799
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Dr. Marie Sherleen Nera Brigham , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
10180 Se Sunnyside Rd, Clackamas, OR 970158970
Phone: 5035226372
NPI Identifier 1629206073
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Dr. Stephanie W Cha , MD

Internal Medicine

Active NPI Status
9290 Se Sunnybrook Blvd, Suite 120, Clackamas, OR 970156899
Phone: 5032152110
NPI Identifier 1902832371
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Dr. Cynthia A Chan , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
10100 Se Sunnyside Rd, Clackamas, OR 970158970
Phone: 8008132000
NPI Identifier 1912090895
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Dr. Frank Y Chen , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
10180 Se Sunnyside Rd, Clackamas, OR 970158970
Phone: 5036522880
NPI Identifier 1144484767
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Dr. Christine Eun Jin Choo , MD

Internal Medicine

Active NPI Status
10180 Se Sunnyside Rd, Clackamas, OR 970158970
Phone: 5036522880
NPI Identifier 1932215951
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Dr. Jane Y Chung , MD

Internal Medicine

Active NPI Status
10180 Se Sunnyside Rd, Clackamas, OR 970158970
Phone: 5035718049
NPI Identifier 1700993615
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Dr. Christopher Michael Clements , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
10180 Se Sunnyside Rd, Kaiser Sunnyside Medical Center, Clackamas, OR 970158970
Phone: 5036522880
NPI Identifier 1093978025
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Dr. Alla Comardelle , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
Kaiser Sunnyside Medical Center, 10180 Se Sunnyside Rd., Clackamas, OR 97015
Phone: 5036522880
NPI Identifier 1558397034
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Dr. Valerie Anne Downey , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
10180 Se Sunnyside Rd, Clackamas, OR 970158970
Phone: 5036522880
NPI Identifier 1902905540
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Dr. Andrew H Felcher , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
10180 Se Sunnyside Rd, Clackamas, OR 970158970
Phone: 5036522880
NPI Identifier 1780780056
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Dr. Gregory P Garcia , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
9290 Se Sunnybrook Blvd, Suite 120, Clackamas, OR 970156899
Phone: 5032152110
NPI Identifier 1922036219
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Frequently Asked Questions about Internal Medicine in Clackamas

How do I check a Internal Medicine practitioner's license?

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.

Why is a practitioner missing from this list?

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.