Eric Seen Han Ong, M.D.
Nephrology Physician · Seattle, WA
Eric Seen Han Ong, M.D. is a nephrology physician with a practice address in Seattle, Washington, and NPI 1376805085, issued on Jun 10, 2012. Check the license (Washington MD61012370, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Eric Seen Han Ong
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- MD61012370 WA
Self-reported in NPPES; status is on the state search - Practice location
- 904 7TH Ave, Seattle, WA 98104
- Phone
- (206) 860-5575
- Enumerated
- Jun 10, 2012
- Record last updated
- Apr 29, 2026
- Medicare enrollment
- Enrolled (PECOS I20200228001616); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 284 in Washington → Look up another NPI →
Also registered at 904 7TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Hiba AmbreenInternal Medicine Physician1750027942
- Linda Anderson, M.D.Pulmonary Disease Physician1053317222
Verify Eric Seen Han Ong in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD61012370Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.0 times the Medicare Part D claims of the average nephrology physician in 2024
4,450 Medicare Part D claims for 466 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 64 claims were for opioids.
Most prescribed
- Calcitriol587 claims
- Amlodipine Besylate424 claims
- Lisinopril230 claims
- Losartan Potassium205 claims
- Carvedilol151 claims
- Furosemide148 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through 2 group practices
- Optum Care Washington PLLCEdmonds, WA
- The Polyclinic PLLCSeattle, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Eric Seen Han Ong among 284 nephrology physician records in Washington
Eric Seen Han Ong, M.D. is one of 284 nephrology physician records with a practice address in Washington. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 74% of them.
- NPI issued2012 · 74% of these records are older, 22% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated2012 · median 2003 among the 213 with a school on file
- Record last updated2026 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in Washington
There are 284 nephrology physician records in Washington.
All 284 in Washington → Every provider in Seattle → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Bonnie Collins, M.D.Seattle, WA 981041285622142
- Fionnuala Cormack, MDSeattle, WA 981041477656858
- Anthony Dash, MDSeattle, WA 981041841285475
- Nelson Goes, M.D.Seattle, WA 981041548259229
- Yoshio Hall, M.D.Seattle, WA 981041205866787
- Leah HaseleySeattle, WA 981041912083700
- Michael Kelly, MDSeattle, WA 981041013903780
- Rajnish Mehrotra, M.D.Seattle, WA 981041992747471
Common questions
What is Eric Seen Han Ong, M.D.'s NPI number?
Eric Seen Han Ong, M.D.'s National Provider Identifier (NPI) is 1376805085, issued on Jun 10, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Eric Seen Han Ong, M.D. located?
The NPPES record lists a practice address at 904 7TH Ave, Seattle, WA, 98104. Phone: (206) 860-5575. Providers update this record themselves, so call before visiting.
How can I verify Eric Seen Han Ong, M.D.'s license?
NPPES lists Washington license number MD61012370, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Eric Seen Han Ong, M.D. prescribe under Medicare Part D?
In 2024, Eric Seen Han Ong, M.D. had 4,450 Medicare Part D claims for 466 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.