Willam H. Marks, MD
Transplant Surgery Physician · Seattle, WA
Willam H. Marks, MD is a transplant surgery physician with a practice address in Seattle, Washington, and NPI 1942365705, issued on Dec 22, 2006. Check the license (Washington MD00031116, as entered in NPPES) with the Washington board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Willam H. Marks
- Credential
- MD
- Primary taxonomy
- Transplant Surgery Physician 204F00000X
- License number
- MD00031116 WA
Self-reported in NPPES; status is on the state search - Practice location
- 1101 Madison St, Seattle, WA 98104
- Phone
- (206) 386-3660
- Enumerated
- Dec 22, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (206) 386-3644
- Medicaid ID
- 8149320 WA
- Entity
- Type 1 · individual
Also registered at 1101 Madison St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Deepa Abraham, MDOphthalmology Physician1447250568
- Sharmila Ahmed, MDHematology & Oncology Physician1073512141
- Kirk Alexander, DPMFoot & Ankle Surgery Podiatrist1720076367
- Sonal Avasare, M.D.Pediatric Nephrology Physician1811196686
- Ralph Aye, MDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1982788600
- Robert Ballard, MDOtolaryngology Physician1508854449
Verify Willam H. Marks in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Washington board licenses this profession
Search for license MD00031116Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average transplant surgery physician in 2024
12 Medicare Part D claims, against an average of 260 among the 541 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Transplant Surgery Physician providers in Washington
There are 17 transplant surgery physician records in Washington.
Other transplant surgery physician records in Washington
- Alex Cantafio, MDTacoma, WA1235184656
- Laurie Fouser, MDSeattle, WA1144391145
- Brian Goertz, MDKirkland, WA1285881441
- James Hendele, M.D.Seattle, WA1376962654
- Julian Horwitz, MDSeattle, WA1770901449
- Yong Kwon, M.D.Seattle, WA1295996205
- Adam Levy, M.D.Seattle, WA1104987387
- Juan Mejia, MDSpokane, WA1588848428
- Okechukwu Ojogho, M.D.Spokane, WA1972535128
- James PerkinsSeattle, WA1548345366
Common questions
What is Willam H. Marks, MD's NPI number?
Willam H. Marks, MD's National Provider Identifier (NPI) is 1942365705, issued on Dec 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Willam H. Marks, MD located?
The NPPES record lists a practice address at 1101 Madison St, Seattle, WA, 98104. Phone: (206) 386-3660. Providers update this record themselves, so call before visiting.
How can I verify Willam H. Marks, MD's license?
NPPES lists Washington license number MD00031116, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity only.
How much does Willam H. Marks, MD prescribe under Medicare Part D?
In 2024, Willam H. Marks, MD had 12 Medicare Part D claims; the average among transplant surgery physician prescribers was 260. 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.