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Internal Medicine - Infectious Diseases in Portland, OR

Browse 78 Internal Medicine - Infectious Disease providers listed in NPPES with a practice address in Portland, Oregon.

78 Healthcare Providers

How Portland compares with the U.S.

Portland has 12 clinicians in Internal Medicine - Infectious Disease per 100,000 residents, 3.8 times the U.S. rate of 3.2.

That is 78 active clinicians in Internal Medicine - Infectious Disease with a practice address in Portland, for a population of 641,165.

The Oregon rate is 3.0 per 100,000 residents.

What these numbers mean

Clinicians per 100,000 residents compares places of different sizes. We count active clinicians who list a practice address in the area in the federal NPI registry (NPPES) and divide by the number of people who live there, according to the U.S. Census Bureau. The U.S. rate is the same calculation for the whole country.

A higher number does not mean it is easier to get an appointment, that wait times are shorter, or that care is better. It also does not show how many clinicians are accepting new patients or which insurance plans they take. A lower number does not by itself mean there is a shortage.

City counts use the city name in each clinician's practice address. That postal city can cover a larger or smaller area than the city limits the Census Bureau uses for population, and many clinicians list only one address even if they work in several places. Cities with hospitals or large medical centers often list more specialists than the number of residents alone would suggest, because patients also come from nearby areas.

100% of clinicians in Internal Medicine - Infectious Disease in Portland listed in the CMS Medicare file (54 of 54) accept Medicare assignment. That is similar to the Oregon share of 99%.

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.

63% of clinicians in Internal Medicine - Infectious Disease in Portland listed in the CMS Medicare file (34 of 54) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is similar to the Oregon share of 59%.

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. Population: U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates, Table B01003 (Total Population).

Internal Medicine - Infectious Disease Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Internal Medicine - Infectious Disease practitioners in Portland, OR

Source: CMS PECOS
PECOS Enrolled Specialists 57 In Portland, OR
Part B Lab & Imaging Eligible 55 Diagnostic Referrals
DME Ordering Eligible 56 Durable Medical Equipment
Home Health Agency Referrals 55 HHA Ordering Eligible
Showing 1โ€“20 of 78 providers
With recent CMS data first, then Aโ€“Z

Dr. Nabil Al-Kourainy , MD

Internal Medicine - Infectious Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
9155 Sw Barnes Rd Ste 638, Portland, OR 972256633
Phone: 5032167000
NPI Identifier 1902339971
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Dr. Diana Antoniskis , MD

Internal Medicine - Infectious Disease

Active NPI Status
3550 N Interstate Ave, Portland, OR 972271196
Phone: 5032495536
NPI Identifier 1922116953
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Dr. Kristina Lyn Bajema , MD

Internal Medicine - Infectious Disease

Active NPI Status Accepts Medicare Assignment
3181 Sw Sam Jackson Park Rd, Portland, OR 972393011
Phone: 5034947735
NPI Identifier 1275829129
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Dr. Cliffton T.h. Bong , MD

Internal Medicine - Infectious Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
2800 N Vancouver Ave Ste 230, Portland, OR 97227
Phone: 5034134340
NPI Identifier 1609950849
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Dr. Erin Marie Murchan Bonura , MD

Internal Medicine - Infectious Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3181 Sw Sam Jackson Park Rd, Portland, OR 972393011
Phone: 5034948530
NPI Identifier 1013071125
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Dr. Caroline G Castillo , MD

Internal Medicine - Infectious Disease

Active NPI Status Accepts Medicare Assignment
3181 Sw Sam Jackson Park Rd, Portland, OR 972393011
Phone: 5034947735
NPI Identifier 1700107463
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Dr. Eric Chien-Yeh Chang , MD

Internal Medicine - Infectious Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
2801 N Gantenbein Ave, Rm 4117, Portland, OR 972271623
Phone: 5034136807
NPI Identifier 1720290190
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Dr. Benjamin C Chen , MD

Internal Medicine - Infectious Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3181 Sw Sam Jackson Park Rd, Portland, OR 972393011
Phone: 5034944971
NPI Identifier 1396236527
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Dr. Elizabeth Chandler Church , MD

Internal Medicine - Infectious Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3181 Sw Sam Jackson Park Rd, Portland, OR 972393011
Phone: 5034944971
NPI Identifier 1336500230
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Dr. Cameron J Cover , MD

Internal Medicine - Infectious Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
9155 Sw Barnes Rd, # 931, Portland, OR 972256625
Phone: 5032167000
NPI Identifier 1609806785
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Dr. Mark Alden Crislip , MD

Internal Medicine - Infectious Disease

Active NPI Status
1015 Nw 22nd, R200, Portland, OR 97210
Phone: 5034138258
NPI Identifier 1457461022
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Marcel Etienne Curlin

Internal Medicine - Infectious Disease

Active NPI Status Accepts Medicare Assignment
3181 Sw Sam Jackson Park Rd, Mc: L457, Portland, OR 972393011
Phone: 5034947735
NPI Identifier 1134204936
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Dr. Udip Dahal , MD

Internal Medicine - Infectious Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
5050 Ne Hoyt St Ste 540, Portland, OR 972132985
Phone: 5032156601
NPI Identifier 1164733911
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Dr. Amy Margarete Dechet , MD

Internal Medicine - Infectious Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
5050 Ne Hoyt St, Suite 540, Portland, OR 972132991
Phone: 5032156601
NPI Identifier 1508031832
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Dr. Joseph Stone Doggett , MD

Internal Medicine - Infectious Disease

Active NPI Status Accepts Medicare Assignment
3181 Sw Sam Jackson Park Rd, Portland, OR 972393011
Phone: 5034947735
NPI Identifier 1093914533
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Dr. Wendi Kay Drummond , DO

Internal Medicine - Infectious Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
5050 Ne Hoyt St Ste 540, Portland, OR 972132985
Phone: 5032156601
NPI Identifier 1417160797
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Dr. Ronald Jeffrey Dworkin , MD

Internal Medicine - Infectious Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
5050 Ne Hoyt St, Ste 540, Portland, OR 972132985
Phone: 5032156601
NPI Identifier 1154327997
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Dr. Stephanie Egge , MD

Internal Medicine - Infectious Disease

Active NPI Status Accepts Medicare Assignment
3181 Sw Sam Jackson Park Rd, Portland, OR 972393011
Phone: 5034944971
NPI Identifier 1336671866
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Dr. Christopher Dryden Evans , MD

Internal Medicine - Infectious Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3181 Sw Sam Jackson Park Road, Mail Code L-475, Portland, OR 972393098
Phone: 5034941198
NPI Identifier 1811160468
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Andrew Banks Fleming

Internal Medicine - Infectious Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3181 Sw Sam Jackson Park Rd, Portland, OR 972393011
Phone: 5034948311
NPI Identifier 1831552298
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Frequently Asked Questions about Internal Medicine - Infectious Disease in Portland

How do I check a Internal Medicine - Infectious Disease 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.