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

William C Johnston, MD

Individual provider Emergency Medicine Physician · NPI 1578581716

William C Johnston, MD is an Emergency Medicine Physician in Batavia, Illinois. Licensed in Illinois. Registered with an NPI since 2006.

Licensed in
IL
In the registry since
2006
Specialties on file
2
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

2500 W Fabyan Pkwy
Batavia, IL 60510-1572
Phone: (630) 879-2110
Show map & directions

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

Specialties & licences

Occupational Medicine Physician (primary) Taxonomy 2083X0100X · Licence 036-070736 (IL)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 036-070736 (IL)

Record details

NPI number1578581716
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 17, 2006
Last updated in NPPESFebruary 21, 2017
Mailing address2357 Sequoia Dr, Aurora, IL 60506-6222