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

Ronald C Gregus, MD

Individual provider Preventive Medicine/Occupational Environmental Medicine Physician · NPI 1205953684

Ronald C Gregus, MD is a Preventive Medicine/Occupational Environmental Medicine Physician in Aurora, Illinois. Licensed in Illinois. Registered with an NPI since 2007.

Licensed in
IL
In the registry since
2007
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

4000 Ogden Ave
Aurora, IL 60504-7105
Phone: (615) 778-4066
Show map & directions

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

Specialties & licences

Preventive Medicine/Occupational Environmental Medicine Physician (primary) Taxonomy 2083P0500X · Licence 036-083618 (IL)

Record details

NPI number1205953684
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 23, 2007
Last updated in NPPESJuly 8, 2007
Mailing address720 Cool Springs Blvd, Suite 300, Franklin, TN 37067-2626