Ronan Wenhan Hsieh, MD
Hematology & Oncology Physician · Seattle, WA
Ronan Wenhan Hsieh, MD is a hematology & oncology physician with a practice address in Seattle, Washington, and NPI 1457880031, issued on Jun 7, 2017. Check the license (Washington MD61396701, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Ronan Wenhan Hsieh
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- MD61396701 WA
Self-reported in NPPES; status is on the state search - Practice location
- 1221 Madison St FL 2, Seattle, WA 98104
- Phone
- (206) 386-2323
- Enumerated
- Jun 7, 2017
- Record last updated
- Feb 10, 2026
- Fax
- (206) 215-6165
- Medicaid ID
- 2252146 WA
- Medicare enrollment
- Enrolled (PECOS I20230717002369); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 476 in Washington → Look up another NPI →
Also registered at 1221 Madison St FL 2
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Thomas Brown, M.D.Medical Oncology Physician1992880991
- Dawn Case, ARNPNurse Practitioner1639266000
- Siddhartha Devarakonda, MDMedical Oncology Physician1487932398
- Philip Gold, MDMedical Oncology Physician1265516983
- Rafael Santana Davila, MDHematology & Oncology Physician1760595227
- Somasundaram Subramaniam, MDMedical Oncology Physician1972766111
Verify Ronan Wenhan Hsieh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD61396701Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
177 Medicare Part D claims for 41 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 18 claims were for opioids.
Most prescribed
- Lidocaine-Prilocaine30 claims
- Prochlorperazine Maleate30 claims
- Loperamide26 claims
- Ondansetron Hcl25 claims
- Oxycodone Hcl13 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.
The MIPS final score for 2023 (Medicare payment program): 93.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $2,057.16
18 payments; by number, the most common kind was food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Swedish Health ServicesSeattle, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ronan Wenhan Hsieh among 476 hematology & oncology physician records in Washington
Ronan Wenhan Hsieh, MD is one of 476 hematology & oncology physician records with a practice address in Washington. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 86% of them.
- NPI issued2017 · 86% of these records are older, 9% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2015 · median 2006 among the 294 with a school on file
- Record last updated2026 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Washington
There are 476 hematology & oncology physician records in Washington.
All 476 in Washington → Every provider in Seattle → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Sharmila Ahmed, MDSeattle, WA 981041073512141
- Atis Barzdins, M.D.Seattle, WA 981041275640179
- Antonio Bedalov, MDSeattle, WA 981041407844467
- Virginia BroudySeattle, WA 981041194801811
- James Bryan, MDSeattle, WA 981041467440446
- Daniel Burns, MDSeattle, WA 981041689630063
- Cynthia Chua, MDSeattle, WA 981041700879582
- Sheldon Goldberg, MDSeattle, WA 981041649266321
Common questions
What is Ronan Wenhan Hsieh, MD's NPI number?
Ronan Wenhan Hsieh, MD's National Provider Identifier (NPI) is 1457880031, issued on Jun 7, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Ronan Wenhan Hsieh, MD located?
The NPPES record lists a practice address at 1221 Madison St FL 2, Seattle, WA, 98104. Phone: (206) 386-2323. Providers update this record themselves, so call before visiting.
How can I verify Ronan Wenhan Hsieh, MD's license?
NPPES lists Washington license number MD61396701, 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 Ronan Wenhan Hsieh, MD prescribe under Medicare Part D?
In 2024, Ronan Wenhan Hsieh, MD had 177 Medicare Part D claims for 41 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Ronan Wenhan Hsieh, MD's MIPS final score?
The 2023 MIPS final score is 93.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.