Michael Warren Willman, MD
Emergency Medicine Physician · Saint Peters, MO
Michael Warren Willman, MD is an emergency medicine physician with a practice address in Saint Peters, Missouri, and NPI 1427494251, issued on May 20, 2013. Check the license (Missouri 2015025824, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Michael Warren Willman
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 2015025824 MO
Self-reported in NPPES; status is on the state search - Practice location
- 10 Hospital Dr, Saint Peters, MO 63376
- Phone
- (314) 362-9123
- Enumerated
- May 20, 2013
- Record last updated
- Jul 14, 2025
- Fax
- (314) 747-9160
- Medicare enrollment
- Enrolled (PECOS I20170717000391); accepts Medicare assignment
- Medical or professional school
- Saint Louis University School Of Medicine, 2013
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,405 in Missouri → Look up another NPI →
Also registered at 10 Hospital Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Erika Anderson, P.A.Physician Assistant1417258138
- Damian Baalmann, MDEmergency Medicine Physician1508203829
- Alyssa Bell, PAPhysician Assistant1467193656
- Brian Bennett, CRNACertified Registered Nurse Anesthetist1275195281
- Julie Boschert, AGNPGerontology Nurse Practitioner1578197505
- Lydia CameronSpeech-Language Pathologist1548849003
Verify Michael Warren Willman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 2015025824Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
8% more Medicare Part D claims than the average emergency medicine physician in 2024
245 Medicare Part D claims for 173 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 67 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen52 claims
- Cefdinir22 claims
- Prednisone21 claims
- Cephalexin12 claims
- Oxycodone-Acetaminophen11 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.
Bills Medicare through one group practice
- Washington University Community Specialists, LLCSaint Peters, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Warren Willman among 1,405 emergency medicine physician records in Missouri
Michael Warren Willman, MD is one of 1,405 emergency medicine physician records with a practice address in Missouri. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 60% of them.
- NPI issued2013 · 60% of these records are older, 37% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2013 · median 2012 among the 808 with a school on file
- Record last updated2025 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in Missouri
There are 1,405 emergency medicine physician records in Missouri.
All 1,405 in Missouri → Every provider in Saint Peters → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Damian Baalmann, MDSaint Peters, MO 633761508203829
- Jarrod Dornfeld, MDSaint Peters, MO 633761639552441
- Peter Gardiner, MDSaint Peters, MO 633761225055783
- Joseph Kohout, MDSaint Peters, MO 633761811914450
- George Mekhjian, MDSaint Peters, MO 633761407802812
- David Poggemeier, MDSaint Peters, MO 633761942295860
- Jonathan Reed, MDSaint Peters, MO 633761437223146
- Jeffrey Schwartz, M.D., FACEPSaint Peters, MO 633761609893213
Common questions
What is Michael Warren Willman, MD's NPI number?
Michael Warren Willman, MD's National Provider Identifier (NPI) is 1427494251, issued on May 20, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Michael Warren Willman, MD located?
The NPPES record lists a practice address at 10 Hospital Dr, Saint Peters, MO, 63376. Phone: (314) 362-9123. Providers update this record themselves, so call before visiting.
How can I verify Michael Warren Willman, MD's license?
NPPES lists Missouri license number 2015025824, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Michael Warren Willman, MD prescribe under Medicare Part D?
In 2024, Michael Warren Willman, MD had 245 Medicare Part D claims for 173 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.