Donald Alan Weimer, M.D.
Orthopaedic Surgery Physician · O Fallon, IL
Donald Alan Weimer, M.D. is an orthopaedic surgery physician with a practice address in O Fallon, Illinois, and NPI 1932152980, issued on May 19, 2006. Check the license (Illinois 036101574, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Donald Alan Weimer
- Credential
- M.D.
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License number
- 036101574 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1512 N Green Mount RD, O Fallon, IL 62269
- Phone
- (618) 641-5800
- Enumerated
- May 19, 2006
- Record last updated
- Aug 20, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicaid ID
- 036101574 IL
- Medicare enrollment
- Enrolled (PECOS I20041030000040); accepts Medicare assignment
- Medical or professional school
- Medical College Of Wisconsin, 1988
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 995 in Illinois → Look up another NPI →
Also registered at 1512 N Green Mount RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Veronica Contasti, MDInternal Medicine Physician1255011128
- Nell Hennon, D.O.Family Medicine Physician1992739221
- Jon Jacobson, D.O.Occupational Medicine Physician1780753822
- Stephen Jubinski, M.D.Family Medicine Physician1932377249
- Alison Miller, APNFamily Nurse Practitioner1700314945
Verify Donald Alan Weimer 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 036101574Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
47% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024
184 Medicare Part D claims for 81 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. 83 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen45 claims
- Ondansetron Hcl29 claims
- Oxycodone-Acetaminophen29 claims
- Amoxicillin17 claims
- Naloxone Hcl11 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.
The MIPS final score for 2023 (Medicare payment program): 94.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,186.29
12 payments; by number, the most common kind was food and beverage; the largest payer was Stryker Corporation. 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.
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
- Hshs Medical Group IncO Fallon, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Donald Alan Weimer among 995 orthopaedic surgery physician records in Illinois
Donald Alan Weimer, 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 2006, is newer than 14% of them.
- NPI issued2006 · 14% of these records are older, 49% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated1988 · median 2001 among the 556 with a school on file
- Record last updated2015 · 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 O Fallon → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- Kevin McCarthy, M.D.O Fallon, IL 622691356579684
- David Shervin, M.D.O Fallon, IL 622691366882227
- Swastik Sinha, M.D.Shiloh, IL 622691013163120
- Kevin Koth, D.O.Highland, IL 622491972798049
- Felix Ungacta, MDHighland, IL 622491669568754
- George Crickard, MDQuincy, IL 623011447239165
- Adam Derhake, MDQuincy, IL 623011679741151
- Christopher Dupuis, M.D.Quincy, IL 623011447222385
Common questions
What is Donald Alan Weimer, M.D.'s NPI number?
Donald Alan Weimer, M.D.'s National Provider Identifier (NPI) is 1932152980, issued on May 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Donald Alan Weimer, M.D. located?
The NPPES record lists a practice address at 1512 N Green Mount RD, O Fallon, IL, 62269. Phone: (618) 641-5800. Providers update this record themselves, so call before visiting.
How can I verify Donald Alan Weimer, M.D.'s license?
NPPES lists Illinois license number 036101574, 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 Donald Alan Weimer, M.D. prescribe under Medicare Part D?
In 2024, Donald Alan Weimer, M.D. had 184 Medicare Part D claims for 81 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. Part D covers Medicare prescriptions only.
What is Donald Alan Weimer, M.D.'s MIPS final score?
The 2023 MIPS final score is 94.6 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.