Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Willam H Marks, MD

Individual provider Transplant Surgery Physician · NPI 1942365705

Willam H Marks, MD is a Transplant Surgery Physician in Seattle, Washington. Licensed in Washington. Registered with an NPI since 2006.

Licensed in
WA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

1101 Madison St Ste 200
Seattle, WA 98104-1306
Phone: (206) 386-3660
Fax: (206) 386-3644
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Transplant Surgery Physician (primary) Taxonomy 204F00000X · Licence MD00031116 (WA)

Record details

NPI number1942365705
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 22, 2006
Last updated in NPPESJuly 8, 2007
Mailing addressPo Box 84026, Seattle, WA 98124-8426

Other providers in Seattle