Michael S. Leininger, PA PHYSICIAN ASST
Physician Assistant · Joliet, IL
Michael S. Leininger, PA PHYSICIAN ASST is a physician assistant with a practice address in Joliet, Illinois, and NPI 1235147257, issued on Aug 4, 2006. Check the license (Illinois 085002266, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Michael S. Leininger
- Credential
- PA PHYSICIAN ASST
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 085002266 IL
Self-reported in NPPES; status is on the state search - Practice location
- 333 N Madison St, Joliet, IL 60435
- Phone
- (815) 725-7133
- Enumerated
- Aug 4, 2006
- Record last updated
- Feb 14, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (815) 773-7859
- Medicare enrollment
- Enrolled (PECOS I20050512000307); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 4,926 in Illinois → Look up another NPI →
Also registered at 333 N Madison St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Michael S. Leininger in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 085002266Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average physician assistant in 2024
53 Medicare Part D claims for 35 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 29 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen24 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): 91.4 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: $287.73
3 payments; by number, the most common kind was food and beverage; the largest payer was Atricure, Inc. The 64,719 providers of this specialty with any payment received $841.65 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
- Cardiac Surgery Associates SCOak Park, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael S. Leininger among 4,926 physician assistant records in Illinois
Michael S. Leininger, PA PHYSICIAN ASST is one of 4,926 physician assistant records with a practice address in Illinois. 82% 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 2% of them.
- NPI issued2006 · 2% of these records are older, 88% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2004 · median 2019 among the 3,407 with a school on file
- Record last updated2020 · 35% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
46 physician assistant records list a practice address in Joliet
They are 46 of the 2,047 NPPES records with a practice address in Joliet, and 4,926 physician assistant records in Illinois.
All 4,926 in Illinois → Every provider in Joliet → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Sarah Brooks, PA-CJoliet, IL 604351053747816
- Kevin Clarke, PAJoliet, IL 604351063475432
- Sandra Coomes, PAJoliet, IL 604351275629420
- Alishia Davison, PA-CJoliet, IL 604351760810915
- Shannon Groves, PAJoliet, IL 604351013106707
- Timothy Hall, PAJoliet, IL 604351326146416
- Ashtyn Janovyak, PA-CJoliet, IL 604351275880692
- Brenda Keener, PA CJoliet, IL 604351992745491
Common questions
What is Michael S. Leininger, PA PHYSICIAN ASST's NPI number?
Michael S. Leininger, PA PHYSICIAN ASST's National Provider Identifier (NPI) is 1235147257, issued on Aug 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael S. Leininger, PA PHYSICIAN ASST located?
The NPPES record lists a practice address at 333 N Madison St, Joliet, IL, 60435. Phone: (815) 725-7133. Providers update this record themselves, so call before visiting.
How can I verify Michael S. Leininger, PA PHYSICIAN ASST's license?
NPPES lists Illinois license number 085002266, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Michael S. Leininger, PA PHYSICIAN ASST prescribe under Medicare Part D?
In 2024, Michael S. Leininger, PA PHYSICIAN ASST had 53 Medicare Part D claims for 35 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Michael S. Leininger, PA PHYSICIAN ASST's MIPS final score?
The 2023 MIPS final score is 91.4 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.