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Internal Medicine - Nephrology Specialists in Portland, OR

Browse 73 Internal Medicine - Nephrology providers listed in NPPES with a practice address in Portland, Oregon.

73 Healthcare Providers

How Portland compares with the U.S.

Portland has 11 clinicians in Internal Medicine - Nephrology per 100,000 residents, 2.8 times the U.S. rate of 4.0.

That is 73 active clinicians in Internal Medicine - Nephrology with a practice address in Portland, for a population of 641,165.

The Oregon rate is 3.2 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 - Nephrology in Portland listed in the CMS Medicare file (44 of 44) 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.

70% of clinicians in Internal Medicine - Nephrology in Portland listed in the CMS Medicare file (31 of 44) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is similar to the Oregon share of 70%.

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 - Nephrology Medicare (PECOS) Enrollment & Ordering Eligibility

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

Source: CMS PECOS
PECOS Enrolled Specialists 51 In Portland, OR
Part B Lab & Imaging Eligible 51 Diagnostic Referrals
DME Ordering Eligible 52 Durable Medical Equipment
Home Health Agency Referrals 51 HHA Ordering Eligible
Showing 1โ€“20 of 73 providers
With recent CMS data first, then Aโ€“Z

Dr. Wooin Ahn , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3181 Sw Sam Jackson Park Rd, Portland, OR 972393011
Phone: 5034943442
NPI Identifier 1366608267
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Dr. Nayan Arora , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3181 Sw Sam Jackson Park Rd, Portland, OR 972393011
Phone: 5034943442
NPI Identifier 1700102159
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Dr. Rupali Surendra Avasare , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment
3181 Sw Sam Jackson Park Rd, Sjh6, Portland, OR 972393011
Phone: 5034943442
NPI Identifier 1265676324
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Dr. William M Bennett , MD

Internal Medicine - Nephrology

Active NPI Status
1040 Nw 22nd Ave, Suite 480, Portland, OR 97210
Phone: 5034136555
NPI Identifier 1457320525
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Dr. Chun Khai Chong , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
4224 Ne Halsey St Ste 300, Portland, OR 972131568
Phone: 5032355509
NPI Identifier 1932367117
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Dr. Pavan Chopra , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3181 Sw Sam Jackson Park Rd, Portland, OR 972393011
Phone: 5034943442
NPI Identifier 1851473730
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Dr. David Mason Cohen , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment
3181 Sw Sam Jackson Park Rd, Portland, OR 972393011
Phone: 5034943442
NPI Identifier 1467468926
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Dr. Joshua Nicholas Curry , MD, PhD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3181 Sw Sam Jackson Park Rd, Portland, OR 972393011
Phone: 5034943442
NPI Identifier 1043848203
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Dr. Maria Theresa Silvano De Jesus , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
4224 Ne Halsey St Ste 300, Portland, OR 972131568
Phone: 5032355509
NPI Identifier 1083825251
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Dr. Angelo Mario De Mattos , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment
3181 Sw Sam Jackson Park Rd, Portland, OR 972393011
Phone: 5034943442
NPI Identifier 1619984812
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Dr. Hem A Deodhar , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1130 Nw 22nd Avenue, Ste 640, Portland, OR 972102993
Phone: 5032297976
NPI Identifier 1497723555
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Dr. Tonja Cross Dirkx , MD

Internal Medicine - Nephrology

Active NPI Status
3181 Sw Sam Jackson Park Rd, Portland, OR 972393011
Phone: 5034948490
NPI Identifier 1790872745
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Dr. David Hoadley Ellison , MD

Internal Medicine - Nephrology

Active NPI Status
3181 Sw Sam Jackson Park Rd, Portland, OR 972393011
Phone: 5034943442
NPI Identifier 1346337391
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Dr. Peter S Fong , MD, PharmD

Internal Medicine - Nephrology

Active NPI Status
3710 Sw Us Veterans Hospital Rd, Portland, OR 972392964
Phone: 5032208262
NPI Identifier 1215217781
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Dr. Cynthia Lou Gaboury , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment
3181 Sw Sam Jackson Park Rd, Portland, OR 972393011
Phone: 5034943442
NPI Identifier 1063413276
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Dr. Arthur Greenberg , MD

Internal Medicine - Nephrology

Active NPI Status
3181 Sw Sam Jackson Park Rd, Portland, OR 972393011
Phone: 5034943442
NPI Identifier 1013090273
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Dr. Susan Bailey Gurley , MD, PhD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment
3181 Sw Sam Jackson Park Rd, Portland, OR 972393011
Phone: 5034943442
NPI Identifier 1265522072
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Dr. Kate Schoolwerth Gustafson , MD

Internal Medicine - Nephrology

Active NPI Status
3710 Sw Us Veterans Hospital Rd # P3neph, Portland, OR 972392964
Phone: 5032208262
NPI Identifier 1578707451
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Dr. Amy Shultz Hackett , MD

Internal Medicine - Nephrology

Active NPI Status
9155 Sw Barnes Rd Ste 330, Portland, OR 972256630
Phone: 5037721174
NPI Identifier 1851468466
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Dr. Mitchell A Hawkey , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
9155 Sw Barnes Rd Ste 402, Portland, OR 972256631
Phone: 5032927704
NPI Identifier 1144298209
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Frequently Asked Questions about Internal Medicine - Nephrology in Portland

How do I check a Internal Medicine - Nephrology 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.