Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Gregory Dewitt Folkert, MD

Individual provider Emergency Medicine Physician · NPI 1063538015

Dr. Gregory Dewitt Folkert, MD practises Emergency Medicine in Alton, Illinois. Graduated from University of Michigan Medical School in 2005, 21 years ago. Practices with Alton-Griffin Emergency Group PC, a 15-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Illinois and Missouri.

Years since qualifying
21
Trained at
University of Michigan Medical School
Licensed in
IL, MO
In the registry since
2007
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1 Saint Anthonys Way
Alton, IL 62002-4568
Phone: (618) 465-2571
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 915 N Grand Blvd, Saint Louis, MO 63106-1621 — (314) 289-6410

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 2008008950 (MO)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 036.150967 (IL)

Record details

NPI number1063538015
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 21, 2007
Last updated in NPPESAugust 23, 2025
Certification dateAugust 23, 2025

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolUNIVERSITY OF MICHIGAN MEDICAL SCHOOL
Graduated 2005 (21 years in practice)
Group practice Alton-Griffin Emergency Group Pc — 15 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients171
Services billed 203 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Alton-Griffin Emergency Group PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 15 clinicians in the practice; 12 are shown here.

Other providers in Alton