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Internal Medicine Providers in Lake Oswego, OR

Browse 23 Internal Medicine providers listed in NPPES with a practice address in Lake Oswego, Oregon.

23 Healthcare Providers

How Lake Oswego compares with the U.S.

Lake Oswego has 57 clinicians in Internal Medicine per 100,000 residents, about 1.3 times the U.S. rate of 44.

That is 23 active clinicians in Internal Medicine with a practice address in Lake Oswego, for a population of 40,381.

The Oregon rate is 50 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 in Lake Oswego listed in the CMS Medicare file (10 of 10) accept Medicare assignment. That is similar to the Oregon share of 98%.

Only 10 of 23 active clinicians in Internal Medicine in Lake Oswego 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.

70% of clinicians in Internal Medicine in Lake Oswego listed in the CMS Medicare file (7 of 10) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is higher 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. Population: U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates, Table B01003 (Total Population).

Internal Medicine Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Internal Medicine practitioners in Lake Oswego, OR

Source: CMS PECOS
PECOS Enrolled Specialists 13 In Lake Oswego, OR
Part B Lab & Imaging Eligible 14 Diagnostic Referrals
DME Ordering Eligible 14 Durable Medical Equipment
Home Health Agency Referrals 14 HHA Ordering Eligible
Showing 1โ€“20 of 23 providers
With recent CMS data first, then Aโ€“Z

Dr. Alia Alhumaid , MD

Internal Medicine

Active NPI Status
5 Centerpointe Dr Ste 400, Lake Oswego, OR 970358661
Phone: 5034867276
NPI Identifier 1598936916
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Dr. Colene I Andersen , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
18010 Mcewan Rd, Lake Oswego, OR 970357868
Phone: 5035257500
NPI Identifier 1710932421
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Dr. Stephanie M Barayuga , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
4004 Kruse Way Pl Ste 300, Lake Oswego, OR 970352479
Phone: 5032161500
NPI Identifier 1295225951
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Dr. Daryl William Baron , MD

Internal Medicine

Active NPI Status
16463 Sw Boones Ferry Rd, Lake Oswego, OR 97035
Phone: 5036356256
NPI Identifier 1245293596
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Dr. Colleen Amanda Finnegan , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
4004 Kruse Way Pl Ste 300, Lake Oswego, OR 97035
Phone: 5032161500
NPI Identifier 1104909936
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Dr. Lauren Marlene Gearhart , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
16463 Boones Ferry Rd, Lake Oswego, OR 970354207
Phone: 5036356256
NPI Identifier 1720069529
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Dr. Steven Anthony Hashiguchi , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
16463 Sw Boones Ferry Rd, Lake Oswego, OR 97035
Phone: 5036356256
NPI Identifier 1184687428
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Dr. Nancy J Heisel , MD

Internal Medicine

Active NPI Status
18010 Sw Mcewan Rd, Lake Oswego, OR 970357868
Phone: 5035257500
NPI Identifier 1134274129
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Dr. Claire Turina Higgins , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
4004 Kruse Way Pl Ste 300, Lake Oswego, OR 970352479
Phone: 5032161500
NPI Identifier 1992453302
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Paula Diane Kilpatrick

Internal Medicine

Active NPI Status
4035 Sw Mercantile Drive, Suite 101, Lake Oswego, OR 970352587
Phone: 5036973001
NPI Identifier 1134179872
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Dr. Hidenao Kimura , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
16463 Boones Ferry Rd 300, Lake Oswego, OR 97035
Phone: 5036369605
NPI Identifier 1770519340
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Dr. Sue A Lewis , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
17704 Jean Way, Ste 105, Lake Oswego, OR 970355497
Phone: 5036756776
NPI Identifier 1366559577
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Dr. Ellen Kyte Mayock , MD

Internal Medicine

Active NPI Status
18010 Mcewan Rd, Lake Oswego, OR 970357868
Phone: 5035257500
NPI Identifier 1619930237
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Dr. Kenneth Paul Melvin , MD

Internal Medicine

Active NPI Status
4035 Mercantile Dr, Suite 112, Lake Oswego, OR 970352546
Phone: 5032031177
NPI Identifier 1013971837
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Dr. Birch A Porter , MD

Internal Medicine

Active NPI Status
5 Centerpointe Dr, Lake Oswego, OR 970358651
Phone: 8007181259
NPI Identifier 1558386573
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Dr. Jordan David Smith , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
18010 Sw Mcewan Rd, Lake Oswego, OR 97035
Phone: 5035257500
NPI Identifier 1336345263
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Dr. Paul U Yutan , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
14535 Westlake Dr Ste B, Lake Oswego, OR 970357775
Phone: 5034795608
NPI Identifier 1114963196
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Dr. Edward Everett Conrad , MD

Internal Medicine

Active NPI Status
550 3rd St, Lake Oswego, OR 970343002
Phone: 5036355044
NPI Identifier 1396766796
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Dr. H Freeman Harris , MD

Internal Medicine

Active NPI Status
4309 Oakridge Rd, Lake Oswego, OR 970353418
Phone: 5036369687
NPI Identifier 1962469551
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Dr. Judith Ann Lindsey , MD

Internal Medicine

Active NPI Status
18010 Sw Mcewan Road, Lake Oswego, OR 97035
Phone: 5035257500
NPI Identifier 1922074160
View Full Profile

Frequently Asked Questions about Internal Medicine in Lake Oswego

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.