Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Eric Seen Han Ong, MD

Individual provider Nephrology Physician · NPI 1376805085

Dr. Eric Seen Han Ong, MD is a Nephrology in Seattle, Washington. Qualified in 2012, 14 years ago. Practices with Optum Care Washington PLLC, a 685-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Washington.

Years since qualifying
14
Licensed in
WA
In the registry since
2012
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

904 7th Ave
Seattle, WA 98104-1132
Phone: (206) 860-5575
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nephrology Physician (primary) Taxonomy 207RN0300X · Licence MD61012370 (WA)

Record details

NPI number1376805085
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 10, 2012
Last updated in NPPESApril 29, 2026
Certification dateApril 29, 2026
Mailing address7600 Evergreen Way, Everett, WA 98203-6421

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNEPHROLOGY
Medical schoolOTHER
Graduated 2012 (14 years in practice)
Group practice Optum Care Washington Pllc — 685 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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