NPPES file of Aug 9, 2026

Michael Robert Messmer, D.O.

Sports Medicine (Family Medicine) Physician · Godfrey, IL

Michael Robert Messmer, D.O. is a sports medicine (family medicine) physician with a practice address in Godfrey, Illinois, and NPI 1538300561, issued on Mar 21, 2009. Check the license (Illinois 036169796, 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
1538300561
Name
Michael Robert Messmer
Credential
D.O.
Primary taxonomy
Sports Medicine (Family Medicine) Physician 207QS0010X
License numbers
036169796 IL
02004856A IN
Self-reported in NPPES; status is on the state search
Practice location
5213 Godfrey RD Ste 110, Godfrey, IL 62035
Phone
(618) 619-3330
Enumerated
Mar 21, 2009
Record last updated
Sep 19, 2025
Fax
(618) 463-7601
Medicare enrollment
Enrolled (PECOS I20240726003875); accepts Medicare assignment
Medical or professional school
Lake Erie College Of Osteopathic Medicine, Erie, 2007
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.
Download card Updates feed

8 nearest sports medicine (family medicine) physician records → All 121 in Illinois → Look up another NPI →

Also registered at 5213 Godfrey RD Ste 110

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

  1. Leanne Beasley, DOFamily Medicine Physician1679277578
  2. Kristin Childers, FNP-CFamily Nurse Practitioner1801359575
  3. Kristine Costello, ANPFamily Nurse Practitioner1922469402
  4. Tracie Eilerman, FNPFamily Nurse Practitioner1619456472
  5. Valerie Fretz, NPFamily Nurse Practitioner1720885270
  6. Catherine Greene, MDFamily Medicine Physician1194415034

Verify Michael Robert Messmer 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 036169796    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

94% fewer Medicare Part D claims than the average sports medicine (family medicine) physician in 2024

48 Medicare Part D claims for 36 beneficiaries, against an average of 855 among the 2,237 providers of this specialty who prescribed in Part D.

  1. Michael Messmer48
  2. Specialty average855

Most prescribed

  1. Meloxicam16 claims
  2. Celecoxib14 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: $14.10

1 payment: food and beverage; the largest payer was Elite Orthopedics, Llc. The 1,218 providers of this specialty with any payment received $781.49 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Michael Messmer$14.10
  2. Specialty average$781.49

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).

Michael Robert Messmer among 121 sports medicine (family medicine) physician records in Illinois

Michael Robert Messmer, D.O. is one of 121 sports medicine (family medicine) physician records with a practice address in Illinois. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 45% of them.

  • NPI issued2009 · 45% of these records are older, 53% newer
  • In a Medicare fileYes · 88% of these records are
  • In the CMS Doctors and Clinicians fileYes · 79% of these records are
  • Graduated2007 · median 2011 among the 95 with a school on file
  • Record last updated2025 · 44% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207QS0010X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Sports Medicine (Family Medicine) Physician providers in Illinois

There are 121 sports medicine (family medicine) physician records in Illinois.

All 121 in Illinois → Every provider in Godfrey → Sports Medicine (Family Medicine) Physician nationwide →

The 8 sports medicine (family medicine) physician records with the nearest ZIP codes

  1. David Priebe, M.D.Granite City, IL 620401194769166
  2. Matthew Moslener, MDBelleville, IL 622201609003391
  3. Tracy Hall, D.O.Greenville, IL 622461659366102
  4. Richard Derby, MDO Fallon, IL 622691295720845
  5. Jeremy Henrichs, M.D.Urbana, IL 618011154326759
  6. Kaleb Kremsreiter, MDO Fallon, IL 622691144968827
  7. Ahmed Radwan, M.D.O Fallon, IL 622691376575126
  8. Nelson Shreve, MDO Fallon, IL 622691720541527

Common questions

What is Michael Robert Messmer, D.O.'s NPI number?

Michael Robert Messmer, D.O.'s National Provider Identifier (NPI) is 1538300561, issued on Mar 21, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Michael Robert Messmer, D.O. located?

The NPPES record lists a practice address at 5213 Godfrey RD Ste 110, Godfrey, IL, 62035. Phone: (618) 619-3330. Providers update this record themselves, so call before visiting.

How can I verify Michael Robert Messmer, D.O.'s license?

NPPES lists Illinois license number 036169796, 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 Michael Robert Messmer, D.O. prescribe under Medicare Part D?

In 2024, Michael Robert Messmer, D.O. had 48 Medicare Part D claims for 36 beneficiaries; the average among sports medicine (family medicine) physician prescribers was 855. 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.