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