NPPES file of Aug 9, 2026

Gregory Joseph Simmons, M.D.

Orthopaedic Surgery Physician · Belleville, IL

Gregory Joseph Simmons, M.D. is an orthopaedic surgery physician with a practice address in Belleville, Illinois, and NPI 1194729871, issued on Jun 9, 2005. Check the license (Illinois 036102208, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1194729871
Name
Gregory Joseph Simmons
Credential
M.D.
Primary taxonomy
Orthopaedic Surgery Physician 207X00000X
License number
036102208 IL
Self-reported in NPPES; status is on the state search
Practice location
4700 Memorial Dr, Belleville, IL 62226
Phone
(618) 234-9884
Enumerated
Jun 9, 2005
Record last updated
Feb 12, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(618) 235-9020
Medicaid IDs
036102208 IL
1194729871 IL
Medicare enrollment
Enrolled (PECOS I20040129000064); accepts Medicare assignment
Medical or professional school
Saint Louis University School Of Medicine, 1995
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest orthopaedic surgery physician records → All 995 in Illinois → Look up another NPI →

Also registered at 4700 Memorial Dr

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Kevin Baumer, M.D.Orthopaedic Surgery Physician1891799565
  2. Bradley Budde, MDNeurological Surgery Physician1952755951
  3. Diana Chamblin-Bevirt, M.S. CCC-SLPSpeech-Language Pathologist1912261264
  4. Aleisia Eilers, M.A., CCC-SLPSpeech-Language Pathologist1376770479
  5. Meghan Gehrs, MAT, ATC, LATAthletic Trainer1881078152
  6. Christopher Heffner, MDNeurological Surgery Physician1740286335

Verify Gregory Joseph Simmons in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
    Search for license 036102208    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Illinois license search

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5.0 times the Medicare Part D claims of the average orthopaedic surgery physician in 2024

1,719 Medicare Part D claims for 217 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. Brand-name drugs were 2% of claims. 1,276 claims were for opioids.

  1. Gregory Simmons1,719
  2. Specialty average346

Most prescribed

  1. Hydrocodone-Acetaminophen591 claims
  2. Oxycodone-Acetaminophen483 claims
  3. Tramadol Hcl101 claims
  4. Cephalexin75 claims
  5. Gabapentin67 claims
  6. Oxycodone Hcl48 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $106.80

5 payments; by number, the most common kind was food and beverage; the largest payer was Heraeus Medical, LLC. The 15,003 providers of this specialty with any payment received $23,022.89 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Gregory Simmons$107
  2. Specialty average$23,023

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Fairview Heights Medical Group SCAlton, IL

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Gregory Joseph Simmons among 995 orthopaedic surgery physician records in Illinois

Gregory Joseph Simmons, M.D. is one of 995 orthopaedic surgery physician records with a practice address in Illinois. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 86% newer
  • In a Medicare fileYes · 77% of these records are
  • In the CMS Doctors and Clinicians fileYes · 56% of these records are
  • Graduated1995 · median 2001 among the 556 with a school on file
  • Record last updated2021 · 51% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Orthopaedic Surgery Physician providers in Illinois

There are 995 orthopaedic surgery physician records in Illinois.

All 995 in Illinois → Every provider in Belleville → Orthopaedic Surgery Physician nationwide →

The 8 orthopaedic surgery physician records with the nearest ZIP codes

  1. Kevin Baumer, M.D.Belleville, IL 622261891799565
  2. Blakelyn Busse, DOBelleville, IL 622261093238230
  3. Steven Horner, M.D.Belleville, IL 622261932154051
  4. Donald Johnston, D.O.Belleville, IL 622261811003056
  5. Charles Lehmann, MDBelleville, IL 622261033371992
  6. Jason Wiechert, D.O.Belleville, IL 622261235545971
  7. Steven Morton, D.O.Breese, IL 622301891768859
  8. Carl Painter, MDBreese, IL 622301689669111

Common questions

What is Gregory Joseph Simmons, M.D.'s NPI number?

Gregory Joseph Simmons, M.D.'s National Provider Identifier (NPI) is 1194729871, issued on Jun 9, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Gregory Joseph Simmons, M.D. located?

The NPPES record lists a practice address at 4700 Memorial Dr, Belleville, IL, 62226. Phone: (618) 234-9884. Providers update this record themselves, so call before visiting.

How can I verify Gregory Joseph Simmons, M.D.'s license?

NPPES lists Illinois license number 036102208, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Gregory Joseph Simmons, M.D. prescribe under Medicare Part D?

In 2024, Gregory Joseph Simmons, M.D. had 1,719 Medicare Part D claims for 217 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.