MICHAEL ROBERT MESSMER (D.O.) – Sports Medicine (Family Medicine) Physician, NPI 1538300561

MICHAEL ROBERT MESSMER (D.O.) is a healthcare provider. based in Godfrey, Illinois. specializing in FAMILY PRACTICE, SPORTS MEDICINE. They hold the professional credentials D.O.. They hold a License No. 02004856A (IN). The NPI Number for MICHAEL ROBERT MESSMER (D.O.) is 1538300561

Main info

Male
19 Years Of Experience
Accepts Medicare Assignment
Name
MICHAEL ROBERT MESSMER (D.O.)
NPI
1538300561
Phone
(618) 619-3330
Address
5213 GODFREY RD STE 110
Enumeration Date
21 March 2009
Last Update Date
19 September 2025

Doctor Profile

Medical School Name
LAKE ERIE COLLEGE OF OSTEOPATHIC MEDICINE, ERIE
Secondary Phone
6184637600
Graduation Year
2007 (19 years ago)
PAC ID
4587834502
Group Practice PAC ID
6800784083
Professional Enrollment ID
I20240726003875
Address ID
IL620252540ED2122XRDXX302

Contacts

Secure Messaging
MESSMER@mybeacon.cernerdirect.com
FHIR Endpoint
https://epicproxy.et0965.epichosted.com/FHIRProxy/api/FHIR/DSTU2/
Data current as of
20 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience67
Completeness95
Years active:17State licenses:2Other names

5,037 FAMILY PRACTICE in IL

Provider Addresses for MICHAEL ROBERT MESSMER (D.O.)

  • 5213 GODFREY RD STE 110

    GODFREY, IL 620352510

    Phone: (618) 619-3330

    Fax: (618) 463-7601

    Type: Location

  • 710, North Niles Avenue, South Bend, Saint Joseph County, Indiana, 46617, United States

    SOUTH BEND, IN 466171924

    Phone: (574) 647-1610

    Type: Mailing

  • Beacon Parkway, Granger, Saint Joseph County, Indiana, 46530, United States

    GRANGER, IN 46530

    Phone: (574) 239-6461

    Type: Location

  • 660 MASON RIDGE CENTER DR STE 300

    SAINT LOUIS, MO 631418512

    Phone: (314) 448-3791

    Fax: (314) 996-7658

    Type: Mailing

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

CMS reports 1 Open Payments records for all available years, with a total value of $14.

Total Amount is formed as General ($14) + Research ($0) + Ownership ($0) = $14.

Last reported payment date: 2024-10-11 • Largest payer in this snapshot: Elite Orthopedics, Llc ($14).

Total Amount

$14

General + Research + Ownership

Payments

1

Total payment records

General Amount

$14

General payments

Research Amount

$0

Research funding

Ownership Amount

$0

Ownership interests

Ownership Count

0

Ownership records

Last Payment Date

2024-10-11

Latest reported date

Top Companies

Largest payers in this snapshot

CompanyAmount
Elite Orthopedics, Llc$14
View all Open Payments →|Open Payments Risk Radar →

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2024-07-26

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.

Enrollment records

1

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20240726003875IFamily PracticeILTBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 62035)

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Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 6800784083View full group profile
NameSpecialtyState
Nurse PractitionerIL
Nurse PractitionerIL
Physician AssistantIL
Family PracticeIL
-MO
O B S T E T R I C S/ G Y N E C O L O G YMO
G A S T R O E N T E R O L O G YGA
Physician AssistantIL
-MO
Gastroenterology, Gastroenterology, Internal MedicineOH

Reviews

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Frequently asked questions

What identifier follows MICHAEL ROBERT MESSMER (D.O.) across health systems?
The NPI 1538300561 uniquely identifies MICHAEL ROBERT MESSMER (D.O.) in U.S. healthcare data.
Should I treat MICHAEL ROBERT MESSMER (D.O.) as an active provider?
Patients and plans typically see MICHAEL ROBERT MESSMER (D.O.) as active in the national extract.
How should patients interpret MICHAEL ROBERT MESSMER (D.O.)'s specialty?
The extract shows Sports Medicine (Family Medicine) Physician for MICHAEL ROBERT MESSMER (D.O.). Clinical services aligned with this taxonomy classification.
What city is tied to MICHAEL ROBERT MESSMER (D.O.)?
The directory associates MICHAEL ROBERT MESSMER (D.O.) with Godfrey, Illinois. Check all listed addresses for suites or satellite offices.
Can I verify credentials using only NPI?
NPI confirms identity in the directory; licensure and board certification require separate checks.

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