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

William Markey MD, SC

Organization Gastroenterology Physician · NPI 1265667158

William Markey MD, SC is a Gastroenterology Physician in Chicago, Illinois. Licensed in Illinois. Registered with an NPI since 2009.

Licensed in
IL
In the registry since
2009

Practice location Address checks out

3000 N Halsted St Ste 506
Chicago, IL 60657-5194
Phone: (312) 944-2188
Show map & directions

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

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 036046023 (IL)

Record details

NPI number1265667158
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Willaim Markey — President · (312) 944-2188
NPI enumeratedMay 20, 2009
Last updated in NPPESMay 20, 2009
Mailing addressPo Box 146530, Chicago, IL 60614-6400

Other providers in Chicago