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Specialists in Portland, OR

Browse 393 Specialist providers listed in NPPES with a practice address in Portland, Oregon.

393 Healthcare Providers

How Portland compares with the U.S.

Portland has 61 Specialists per 100,000 residents, 3.4 times the U.S. rate of 18.

That is 393 active Specialists with a practice address in Portland, for a population of 641,165.

The Oregon rate is 26 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.

89% of Specialists in Portland listed in the CMS Medicare file (16 of 18) accept Medicare assignment. That is similar to the Oregon share of 92%.

Only 18 of 393 active Specialists in Portland appear in the CMS Medicare file, so this share describes that smaller group.

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.

33% of Specialists in Portland listed in the CMS Medicare file (6 of 18) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is similar to the Oregon share of 34%.

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).

Specialist Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Specialist practitioners in Portland, OR

Source: CMS PECOS
PECOS Enrolled Specialists 26 In Portland, OR
Part B Lab & Imaging Eligible 25 Diagnostic Referrals
DME Ordering Eligible 26 Durable Medical Equipment
Home Health Agency Referrals 25 HHA Ordering Eligible
Showing 1โ€“20 of 393 providers
With recent CMS data first, then Aโ€“Z

Dr. Lee W Ball , MD

Specialist

Active NPI Status Accepts Medicare Assignment
9205 Sw Barnes Rd, Portland, OR 972256603
Phone: 5032164830
NPI Identifier 1194795518
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Active NPI Status Accepts Medicare Assignment
501 N Graham St, Suite 250, Portland, OR 97227
Phone: 5032490719
NPI Identifier 1295830917
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Active NPI Status
1130 Nw 22nd Ave, Suite 410, Portland, OR 972102900
Phone: 5032297137
NPI Identifier 1902851132
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Dr. David E Bilstrom , MD

Specialist

Active NPI Status
9370 Sw Greenburg Rd, Suite A, Portland, OR 972235442
Phone: 5032458060
NPI Identifier 1790766764
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Active NPI Status
10101 Se Main St, 1006, Portland, OR 972162455
Phone: 5032534000
NPI Identifier 1598822835
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Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1130 Nw 22nd Ave, Suite 410, Portland, OR 972102900
Phone: 5032297137
NPI Identifier 1164534608
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Dr. Ross A Cauthorn , MD

Specialist

Active NPI Status
9205 Sw Barnes Rd, Portland, OR 972256603
Phone: 5032164830
NPI Identifier 1194795500
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Dr. Barry T Degregorio , MD

Specialist

Active NPI Status
1130 Nw 22nd Ave, Suite 410, Portland, OR 972102900
Phone: 5032297137
NPI Identifier 1205948726
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Active NPI Status
2222 Nw Lovejoy St, 607, Portland, OR 972103033
Phone: 5032223638
NPI Identifier 1811195787
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Dr. Edward Allen Galen , MD

Specialist

Active NPI Status
1130 Nw 22nd Ave, Suite 410, Portland, OR 972102900
Phone: 5032297137
NPI Identifier 1417052762
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Dr. James V Hazard , MD, MBA

Specialist

Active NPI Status Accepts Medicare Assignment
9205 Sw Barnes Rd, Portland, OR 972256603
Phone: 5032164830
NPI Identifier 1972573228
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Active NPI Status
2222 Nw Lovejoy St, Portland, OR 972105104
Phone: 5032223638
NPI Identifier 1851387146
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Dr. Ashok Jayaram , MD

Specialist

Active NPI Status
9155 Sw Barnes Rd, Suite 934, Portland, OR 97225
Phone: 5032927005
NPI Identifier 1245323963
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Dr. Douglas J Key , MD

Specialist

Active NPI Status
9755 Sw Barnes Road Suite 155, Portland, OR 972256663
Phone: 5032911953
NPI Identifier 1083883334
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Dr. Yi Y Lian , MD

Specialist

Active NPI Status
3303 Se 89th Ave, Portland, OR 972661912
Phone: 5414307868
NPI Identifier 1891793782
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Dr. David D Long , MD

Specialist

Active NPI Status
9427 Sw Barnes Rd, Portland, OR 972256652
Phone: 5032032040
NPI Identifier 1841303161
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Dr. Diana C Negreanu , MD

Specialist

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
5050 Ne Hoyt St Ste 317, Portland, OR 972132982
Phone: 5032564096
NPI Identifier 1538282447
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Dr. Antonio Pena , MD

Specialist

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
5050 Ne Hoyt St, Suite 203, Portland, OR 972132991
Phone: 5032309224
NPI Identifier 1760531115
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Dr. Jay C Poorman , MD

Specialist

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1130 Nw 22nd Ave, Suite 410, Portland, OR 972102900
Phone: 5032297137
NPI Identifier 1215049721
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Susan Reeder

Specialist

Active NPI Status Accepts Medicare Assignment
10535 Ne Glisan St Ste 350, Portland, OR 972204076
Phone: 5034081323
NPI Identifier 1790983757
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Frequently Asked Questions about Specialist in Portland

How do I check a Specialist 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.