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

Dr. Leyland Arthur Thomas, MD

Individual provider Gastroenterology Physician · NPI 1922068121

Dr. Leyland Arthur Thomas, MD is a Gastroenterology Physician in Granite City, Illinois. Licensed in Illinois and Missouri. Registered with an NPI since 2006.

Licensed in
IL, MO
In the registry since
2006
Specialties on file
3
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

2166 Madison Ave
Granite City, IL 62040-4700
Phone: (618) 452-3301
Fax: (618) 452-3312
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 036084658 (IL)
Gastroenterology Physician Taxonomy 207RG0100X · Licence 036084658 (IL)
Gastroenterology Physician Taxonomy 207RG0100X · Licence 036048 (MO)

Record details

NPI number1922068121
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 23, 2006
Last updated in NPPESJune 18, 2014

Other providers in Granite City