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Internal Medicine - Sleep Medicine Providers in Seattle, WA

Browse 14 Internal Medicine - Sleep Medicine providers listed in NPPES with a practice address in Seattle, Washington.

14 Healthcare Providers

How Seattle compares with the U.S.

Seattle has 1.9 clinicians in Internal Medicine - Sleep Medicine per 100,000 residents, 5.4 times the U.S. rate of 0.3.

That is 14 active clinicians in Internal Medicine - Sleep Medicine with a practice address in Seattle, for a population of 754,195.

The Washington rate is 0.7 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.

90% of clinicians in Internal Medicine - Sleep Medicine in Seattle listed in the CMS Medicare file (9 of 10) accept Medicare assignment. That is similar to the Washington share of 95%.

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.

90% of clinicians in Internal Medicine - Sleep Medicine in Seattle listed in the CMS Medicare file (9 of 10) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is higher than the Washington share of 84%.

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 - Sleep Medicine Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Internal Medicine - Sleep Medicine practitioners in Seattle, WA

Source: CMS PECOS
PECOS Enrolled Specialists 12 In Seattle, WA
Part B Lab & Imaging Eligible 12 Diagnostic Referrals
DME Ordering Eligible 13 Durable Medical Equipment
Home Health Agency Referrals 12 HHA Ordering Eligible
Showing 1โ€“14 of 14 providers
With recent CMS data first, then Aโ€“Z

Dr. Sanjay K Agarwal , MD, FCCP, FAASM

Internal Medicine - Sleep Medicine

Active NPI Status Telehealth Services Available
201 16th Ave E, Seattle, WA 981125226
Phone: 2063263000
NPI Identifier 1477523249
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Dr. Oneil S Bains , MD

Internal Medicine - Sleep Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1100 9th Ave, Seattle, WA 981012756
Phone: 2062236600
NPI Identifier 1982712584
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Dr. Martha Elizabeth Billings , MD

Internal Medicine - Sleep Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
908 Jefferson St, Suite 400, Seattle, WA 981042433
Phone: 2067444999
NPI Identifier 1700811619
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Dr. Wynne Chen , MD

Internal Medicine - Sleep Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
904 7th Ave, Seattle, WA 981041132
Phone: 2068605499
NPI Identifier 1518974351
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Dr. David James Culpepper , MD

Internal Medicine - Sleep Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1100 9th Ave, Seattle, WA 981012756
Phone: 2066257180
NPI Identifier 1386021079
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Sravani Gajjala

Internal Medicine - Sleep Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
9709 3rd Ave Ne, Seattle, WA 981152062
Phone: 4253395453
NPI Identifier 1609403260
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Vishesh K Kapur

Internal Medicine - Sleep Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
Harborview Medical Center, 325 9th Ave, Seattle, WA 98104
Phone: 2067314999
NPI Identifier 1447336169
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Dr. Lefulesele Hycinth Kholoane , MBBS

Internal Medicine - Sleep Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
904 7th Ave, Seattle, WA 981041132
Phone: 2068605500
NPI Identifier 1780259648
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Dr. Ifeoma Victoria Oriaku , MD

Internal Medicine - Sleep Medicine

Active NPI Status Accepts Medicare Assignment
325 9th Ave, Seattle, WA 981042420
Phone: 2067148730
NPI Identifier 1417319526
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Dr. Susan M Rausch , MD

Internal Medicine - Sleep Medicine

Active NPI Status
1100 9th Ave, Seattle, WA 981012756
Phone: 2062236600
NPI Identifier 1326073768
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Dr. Amir Hossein Sabzpoushan , MD

Internal Medicine - Sleep Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1100 9th Ave, Seattle, WA 981012756
Phone: 2066257180
NPI Identifier 1285890038
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Dr. Lucas Matthew Donovan , MD

Internal Medicine - Sleep Medicine

Active NPI Status
1660 S Columbian Way, Seattle, WA 981081532
Phone: 2062776783
NPI Identifier 1588952170
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Dr. Justina Gamache , MD

Internal Medicine - Sleep Medicine

Active NPI Status
1660 S Columbian Way, Seattle, WA 981081532
Phone: 2535833221
NPI Identifier 1457731325
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Dr. Ken He , MD

Internal Medicine - Sleep Medicine

Active NPI Status
1660 S Columbian Way, Va Puget Sound Hcs, Seattle, WA 981081532
Phone: 2535833221
NPI Identifier 1669747861
View Full Profile

Frequently Asked Questions about Internal Medicine - Sleep Medicine in Seattle

How do I check a Internal Medicine - Sleep 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 Washington 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.