Ryan Cassaday, M.D.
Hematology & Oncology Physician · Seattle, WA
Ryan Cassaday, M.D. is a hematology & oncology physician with a practice address in Seattle, Washington, and NPI 1508060583, issued on Jun 13, 2007. Check the license (Washington MD60158445, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Ryan Cassaday
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- MD60158445 WA
Self-reported in NPPES; status is on the state search - Practice location
- 825 Eastlake Ave E, Seattle, WA 98109
- Phone
- (206) 288-1000
- Enumerated
- Jun 13, 2007
- Record last updated
- Jan 24, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicaid ID
- 1508060583 WA
- Medicare enrollment
- Enrolled (PECOS I20120222000132); 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 825 Eastlake Ave E
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Farnoush Abar, M.D.Hematology & Oncology Physician1558560342
- Francis Achacoso, MBA, MSN, RN, NE-BCRegistered Nurse1215604061
- Bamidele Adebayo, MDNeurological Surgery Physician1255176194
- Oyebimpe Adesina, MDHematology & Oncology Physician1184934770
- Shirali AgarwalHematology & Oncology Physician1972093052
- Ali AlgiraigriSpecialist1467880260
Verify Ryan Cassaday in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD60158445Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
111 Medicare Part D claims for 20 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D.
Most prescribed
- Prednisone18 claims
- Acyclovir12 claims
- Ursodiol12 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.
Industry payments in 2024: $21,586.01
8 payments; by number, the most common kind was consulting fee; the largest payer was Gilead Sciences, Inc. 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
- The Association OF University PhysiciansSeattle, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ryan Cassaday among 476 hematology & oncology physician records in Washington
Ryan Cassaday, M.D. 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 2007, is newer than 36% of them.
- NPI issued2007 · 36% of these records are older, 54% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2007 · median 2006 among the 294 with a school on file
- Record last updated2014 · 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
- Nicholas Burwick, M.D.Seattle, WA 981091942234695
- Rekha Chandran, MDSeattle, WA 981091457393878
- Elena Chiorean, M.D.Seattle, WA 981091891750808
- Eric Collisson, MDSeattle, WA 981091093731143
- Jason Comer, M.D.Seattle, WA 981091396719910
- Ying Cui, MD PHDSeattle, WA 981091639191448
- Lawrence Fong, MDSeattle, WA 981091316901630
- Boglarka Gyurkocza, M.D.Seattle, WA 981091366474892
Common questions
What is Ryan Cassaday, M.D.'s NPI number?
Ryan Cassaday, M.D.'s National Provider Identifier (NPI) is 1508060583, issued on Jun 13, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ryan Cassaday, M.D. located?
The NPPES record lists a practice address at 825 Eastlake Ave E, Seattle, WA, 98109. Phone: (206) 288-1000. Providers update this record themselves, so call before visiting.
How can I verify Ryan Cassaday, M.D.'s license?
NPPES lists Washington license number MD60158445, 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 Ryan Cassaday, M.D. prescribe under Medicare Part D?
In 2024, Ryan Cassaday, M.D. had 111 Medicare Part D claims for 20 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.