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

Individual provider Anesthesiology Physician · NPI 1770654089

Gregory Collins, MD practises Anesthesiology in Maryville, Illinois. Graduated from Southern Illinois University School of Medicine in 1983, 43 years ago. Practices with G and G Anesthesia LLC, a 92-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
43
Trained at
Southern Illinois University School of Medicine
Licensed in
IL
In the registry since
2006
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

6810 State Route 162 Ste 215
Maryville, IL 62062-8501 Not confirmed with CMS for 18 years — call before visiting
Phone: (618) 288-5711
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence 036079652 (IL)

Record details

NPI number1770654089
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 10, 2006
Last updated in NPPESFebruary 19, 2008

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Also practisesPAIN MANAGEMENT
Medical schoolSOUTHERN ILLINOIS UNIVERSITY SCHOOL OF MEDICINE
Graduated 1983 (43 years in practice)
Group practice G And G Anesthesia Llc — 92 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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 patients626
Services billed 717 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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 G and G Anesthesia LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 92 clinicians in the practice; 12 are shown here.

Other providers in Maryville