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Allergy & Immunology Specialists in Portland, OR

Browse 19 Allergy & Immunology providers listed in NPPES with a practice address in Portland, Oregon.

19 Healthcare Providers

How Portland compares with the U.S.

Portland has 3.0 clinicians in Allergy & Immunology per 100,000 residents, 2.5 times the U.S. rate of 1.2.

That is 19 active clinicians in Allergy & Immunology with a practice address in Portland, for a population of 641,165.

The Oregon rate is 1.0 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 Allergy & Immunology in Portland listed in the CMS Medicare file (12 of 12) accept Medicare assignment. That is similar to the Oregon share of 100%.

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.

50% of clinicians in Allergy & Immunology in Portland listed in the CMS Medicare file (6 of 12) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is higher than the Oregon share of 43%.

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).

Allergy & Immunology Medicare (PECOS) Enrollment & Ordering Eligibility

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

Source: CMS PECOS
PECOS Enrolled Specialists 13 In Portland, OR
Part B Lab & Imaging Eligible 13 Diagnostic Referrals
DME Ordering Eligible 13 Durable Medical Equipment
Home Health Agency Referrals 13 HHA Ordering Eligible
Showing 1โ€“19 of 19 providers
With recent CMS data first, then Aโ€“Z

Dr. Karen Marie Anstey , MD

Allergy & Immunology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3181 Sw Sam Jackson Park Rd, Mail Code Uhn67, Portland, OR 972393011
Phone: 5034947680
NPI Identifier 1457791261
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Dr. James W. Baker , MD

Allergy & Immunology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
9495 Sw Locust St Ste A, Portland, OR 972236683
Phone: 5036369011
NPI Identifier 1710982293
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Dr. Donald Alwood Dibbern , MD

Allergy & Immunology

Active NPI Status
511 Sw 10th Ave, Suite 1301, Portland, OR 972052732
Phone: 5032280155
NPI Identifier 1538227434
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Dr. Julie C Hong , MD

Allergy & Immunology

Active NPI Status Accepts Medicare Assignment
9495 Sw Locust St Ste A, Portland, OR 972236683
Phone: 5036369011
NPI Identifier 1609093871
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Dr. Haley Peterson Hostetler , MD

Allergy & Immunology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3181 Sw Sam Jackson Park Rd, Portland, OR 972393011
Phone: 5034944300
NPI Identifier 1982022265
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Dr. Shyam Rajan Joshi , MD

Allergy & Immunology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3181 Sw Sam Jackson Park Rd, Portland, OR 97239
Phone: 5034944300
NPI Identifier 1114364247
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Dr. Barzin Khalili , MD

Allergy & Immunology

Active NPI Status Accepts Medicare Assignment
511 Sw 10th Ave Ste 1301, Portland, OR 972052714
Phone: 5032280155
NPI Identifier 1487725990
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Jessica Dale Macdougall

Allergy & Immunology

Active NPI Status Accepts Medicare Assignment
3181 Sw Sam Jackson Park Rd, Portland, OR 972393011
Phone: 5034944300
NPI Identifier 1407345283
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Dr. Anthony Montanaro , MD

Allergy & Immunology

Active NPI Status Accepts Medicare Assignment
3181 Sw Sam Jackson Park Rd, Portland, OR 972393011
Phone: 5034944300
NPI Identifier 1720185598
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Dr. Michael J Noonan , MD

Allergy & Immunology

Active NPI Status
9495 Sw Locust St Ste A, Portland, OR 972236683
Phone: 5036369011
NPI Identifier 1124166244
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Dr. Michael Vernon Osborne , MD

Allergy & Immunology

Active NPI Status
5440 Sw Westgate Dr, 220, Portland, OR 972212420
Phone: 5032927577
NPI Identifier 1225196421
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Gregory Owens

Allergy & Immunology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3181 Sw Sam Jackson Park Rd, Portland, OR 972393011
Phone: 5034944300
NPI Identifier 1043439730
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Dr. Kursteen Salter Price , MD

Allergy & Immunology

Active NPI Status Accepts Medicare Assignment
2275 W Burnside St, Portland, OR 972103541
Phone: 5035757112
NPI Identifier 1437154226
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Dr. Renganathan Srinivasan , MD

Allergy & Immunology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3181 Sw Sam Jackson Park Rd, Portland, OR 972393011
Phone: 5034944300
NPI Identifier 1396841169
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Dr. Cristina Swanson , MD

Allergy & Immunology

Active NPI Status
3181 Sw Sam Jackson Park Rd, Portland, OR 972393011
Phone: 5034948211
NPI Identifier 1134562994
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Dr. Justin Stephen Treat , DO

Allergy & Immunology

Active NPI Status Accepts Medicare Assignment
3600 N Interstate Ave, Portland, OR 972271106
Phone: 5036123375
NPI Identifier 1801826516
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Dr. Clifford Joe Anderson , MD

Allergy & Immunology

Active NPI Status
233 Nw 16th Ave, Portland, OR 972092630
Phone: 5032236480
NPI Identifier 1013913409
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Dr. Emil John Bardana , MD

Allergy & Immunology

Active NPI Status
3181 Sw Sam Jackson Park Rd, Portland, OR 972393011
Phone: 5034944300
NPI Identifier 1629175443
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Dr. Kenneth Michael Ettinger , MD

Allergy & Immunology

Active NPI Status
3550 N Interstate Ave, Portland, OR 972271196
Phone: 5032859321
NPI Identifier 1972617330
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Frequently Asked Questions about Allergy & Immunology in Portland

How do I check a Allergy & Immunology 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.