James M. Simmering, MD
Internal Medicine Physician · Maryville, IL
James M. Simmering, MD is an internal medicine physician with a practice address in Maryville, Illinois, and NPI 1700973351, issued on Oct 6, 2006. Check the license (Illinois 036067473, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- James M. Simmering
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036067473 IL
Self-reported in NPPES; status is on the state search - Practice location
- 6812 State Route 162, Maryville, IL 62062
- Phone
- (618) 288-1122
- Enumerated
- Oct 6, 2006
- Record last updated
- Nov 20, 2024
- Fax
- (618) 288-1144
- Medicaid ID
- 036067473 IL
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 6812 State Route 162
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael Barajas, PAPhysician Assistant1114454733
- Jason Barnett, MDFamily Medicine Physician1295728988
- Kathryn Followell, MDFamily Medicine Physician1396831780
- Kevin Garner, M.D.Internal Medicine Physician1922159037
- Brett Grebing, MDOrthopaedic Surgery Physician1447252978
- Rodney Greeling, DOInternal Medicine Physician1700960572
Verify James M. Simmering in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036067473Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average internal medicine physician in 2024
50 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of 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.
James M. Simmering among 7,238 internal medicine physician records in Illinois
James M. Simmering, MD is one of 7,238 internal medicine physician records with a practice address in Illinois. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 61% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 50% of these records are
- Record last updated2024 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
9 internal medicine physician records list a practice address in Maryville
They are 9 of the 414 NPPES records with a practice address in Maryville, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Maryville → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Kevin Garner, M.D.Maryville, IL 620621922159037
- Rodney Greeling, DOMaryville, IL 620621700960572
- Debra Hoelscher, R.N.Maryville, IL 620621811258148
- Tibor Kopjas, M.D.Maryville, IL 620621952332918
- Paul Malcharek, MDMaryville, IL 620621891781951
- Michael Mandis, MDMaryville, IL 620621821065764
- Srikanth Nadella, M.D.Maryville, IL 620621740599109
- Eddie Paulk, D.O.Maryville, IL 620621003813601
Common questions
What is James M. Simmering, MD's NPI number?
James M. Simmering, MD's National Provider Identifier (NPI) is 1700973351, issued on Oct 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James M. Simmering, MD located?
The NPPES record lists a practice address at 6812 State Route 162, Maryville, IL, 62062. Phone: (618) 288-1122. Providers update this record themselves, so call before visiting.
How can I verify James M. Simmering, MD's license?
NPPES lists Illinois license number 036067473, 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 James M. Simmering, MD prescribe under Medicare Part D?
In 2024, James M. Simmering, MD had 50 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. 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.
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.