Michael Aaron Workman, MD
Family Medicine Physician · Herrin, IL
Michael Aaron Workman, MD is a family medicine physician with a practice address in Herrin, Illinois, and NPI 1184731267, issued on Aug 24, 2006. Check the license (Illinois 036109719, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Michael Aaron Workman
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 036109719 IL
Self-reported in NPPES; status is on the state search - Practice location
- 405 Rushing Drive, Herrin, IL 62948
- Phone
- (618) 993-3300
- Enumerated
- Aug 24, 2006
- Record last updated
- Sep 30, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (618) 993-0262
- Medicaid ID
- 036109719 IL
- Medicare enrollment
- Enrolled (PECOS I20040318000784); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,215 in Illinois → Look up another NPI →
Also registered at 405 Rushing Drive
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kevin Oestmann, MDFamily Medicine Physician1902913908
- Mark Smith, MDFamily Medicine Physician1043327141
Verify Michael Aaron Workman 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 036109719Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.2 times the Medicare Part D claims of the average family medicine physician in 2024
18,565 Medicare Part D claims for 913 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 907 claims were for opioids.
Most prescribed
- Atorvastatin Calcium826 claims
- Lisinopril780 claims
- Levothyroxine Sodium603 claims
- Amlodipine Besylate595 claims
- Hydrocodone-Acetaminophen526 claims
- Gabapentin456 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: $550.08
35 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 55,478 providers of this specialty with any payment received $902.55 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 3 group practices
- Logan Primary Care Service Corp.Herrin, IL
- Select Physical Therapy Holdings IncCarbondale, IL
- Southern Illinois Medical Services NfpHerrin, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Aaron Workman among 6,215 family medicine physician records in Illinois
Michael Aaron Workman, MD is one of 6,215 family medicine physician records with a practice address in Illinois. 78% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 59% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2001 · median 2006 among the 3,714 with a school on file
- Record last updated2021 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
9 family medicine physician records list a practice address in Herrin
They are 9 of the 419 NPPES records with a practice address in Herrin, and 6,215 family medicine physician records in Illinois.
All 6,215 in Illinois → Every provider in Herrin → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Russell Brown, D.O.Herrin, IL 629481891809810
- Awais Butt, M.D.Herrin, IL 629481942560172
- Mark Korte, M.D.Herrin, IL 629481821102849
- Karan Mehta, MDHerrin, IL 629481467184622
- Kevin Oestmann, MDHerrin, IL 629481902913908
- Marshall Short, MDHerrin, IL 629481174722441
- Mark Smith, MDHerrin, IL 629481043327141
- Alan Wilson, M.D.Herrin, IL 629481386774388
Common questions
What is Michael Aaron Workman, MD's NPI number?
Michael Aaron Workman, MD's National Provider Identifier (NPI) is 1184731267, issued on Aug 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael Aaron Workman, MD located?
The NPPES record lists a practice address at 405 Rushing Drive, Herrin, IL, 62948. Phone: (618) 993-3300. Providers update this record themselves, so call before visiting.
How can I verify Michael Aaron Workman, MD's license?
NPPES lists Illinois license number 036109719, 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 Aaron Workman, MD prescribe under Medicare Part D?
In 2024, Michael Aaron Workman, MD had 18,565 Medicare Part D claims for 913 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.