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

Gregory Thomas Bismack, MD

Individual provider Hospitalist Physician · NPI 1619293149

Gregory Thomas Bismack, MD is a Hospitalist in Effingham, Illinois. Graduated from Wayne State University School of Medicine in 2010, 16 years ago. Practices with Cep America - Illinois SNF LLP, an 8-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Illinois, Michigan and Missouri.

Years since qualifying
16
Trained at
Wayne State University School of Medicine
Licensed in
IL, MI, MO
In the registry since
2010
Specialties on file
4
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

503 N Maple St
Effingham, IL 62401-2006
Phone: (217) 342-2121
Show map & directions

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

Additional practice locations (2)

  • 2351 Frank Scott Pkwy E, O Fallon, IL 62269-7457 — (636) 288-4149
  • 401 Corporate Park Dr, Clayton, MO 63105-4201 — (636) 228-4149

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 036.155470 (IL)
Hospitalist Physician Taxonomy 208M00000X · Licence 2022010983 (MO)
Hospitalist Physician Taxonomy 208M00000X · Licence 036155470 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence 4301097035 (MI)

Record details

NPI number1619293149
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 8, 2010
Last updated in NPPESJune 22, 2026
Certification dateJune 22, 2026
Mailing address801 Swarthmore Ln, University City, MO 63130-3620

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyHOSPITALIST
Medical schoolWAYNE STATE UNIVERSITY SCHOOL OF MEDICINE
Graduated 2010 (16 years in practice)
Group practice Cep America - Illinois Snf Llp — 8 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare