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

Dr. Mark Christopher Gillis, MD

Individual provider Family Medicine Physician · NPI 1992806509

Dr. Mark Christopher Gillis, MD is a Family Medicine Physician in Itasca, Illinois. Licensed in Illinois. Registered with an NPI since 2006.

Licensed in
IL
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

1300 N Arlington Heights Rd Ste 130
Itasca, IL 60143-3128
Phone: (847) 871-4540
Fax: (847) 871-4597
Show map & directions

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

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 036078671 (IL)

Record details

NPI number1992806509
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 26, 2006
Last updated in NPPESAugust 31, 2023
Certification dateAugust 31, 2023
Mailing addressPo Box 713260, Chicago, IL 60677-1260

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