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

Dr. Leo W Sullivan II, MD

Individual provider Emergency Medicine Physician · NPI 1851431670

Dr. Leo W Sullivan II, MD is an Emergency Medicine Physician in Belleville, 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

4500 Memorial Dr
Belleville, IL 62226-5360
Phone: (618) 257-5879
Fax: (618) 257-6740
Show map & directions

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

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 036068595 (IL)

Record details

NPI number1851431670
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 8, 2007
Last updated in NPPESJanuary 6, 2016

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