Kathleen A. Leinen, D.O.
Family Medicine Physician · Fairbury, IL
Kathleen A. Leinen, D.O. is a family medicine physician with a practice address in Fairbury, Illinois, and NPI 1760630925, issued on Aug 29, 2008. Check the license (Illinois 036121354, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Kathleen A. Leinen
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 036121354 IL
N0919 TX
Self-reported in NPPES; status is on the state search - Practice location
- 106 S 1St St Ste 100, Fairbury, IL 61739
- Phone
- (815) 692-2308
- Enumerated
- Aug 29, 2008
- Record last updated
- Dec 5, 2025
- Fax
- (815) 692-3278
- Medicaid IDs
- 036121354 IL
209713102 TX - Medicare enrollment
- Enrolled (PECOS I20240123001182); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,215 in Illinois → Look up another NPI →
Verify Kathleen A. Leinen 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 036121354Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
17% more Medicare Part D claims than the average family medicine physician in 2024
4,133 Medicare Part D claims for 431 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 80 claims were for opioids.
Most prescribed
- Atorvastatin Calcium220 claims
- Amlodipine Besylate136 claims
- Lisinopril135 claims
- Losartan Potassium134 claims
- Levothyroxine Sodium123 claims
- Albuterol Sulfate Hfa105 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.
One hospital affiliation
- Saint James HospitalFairbury, IL · Acute Care Hospitals4 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Kathleen A. Leinen among 6,215 family medicine physician records in Illinois
Kathleen A. Leinen, D.O. 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 2008, is newer than 50% of them.
- NPI issued2008 · 50% of these records are older, 46% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2005 · median 2006 among the 3,714 with a school on file
- Record last updated2025 · 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).
2 family medicine physician records list a practice address in Fairbury
They are 2 of the 27 NPPES records with a practice address in Fairbury, and 6,215 family medicine physician records in Illinois.
All 6,215 in Illinois → Every provider in Fairbury → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Rachel Wenger, M.D.Fairbury, IL 617391649436098
- Colby Carr, MDEl Paso, IL 617381669092938
- Paul Hakes, M.D.El Paso, IL 617381750315602
- Steven Ingalsbe, M.D.El Paso, IL 617381962428128
- Benjamin Brewer, MDForrest, IL 617411184618258
- Dennis CafferyHopedale, IL 617471295825594
- Albert Maurer, MDHopedale, IL 617471679624688
- Robert CipollaClinton, IL 617271649370271
Common questions
What is Kathleen A. Leinen, D.O.'s NPI number?
Kathleen A. Leinen, D.O.'s National Provider Identifier (NPI) is 1760630925, issued on Aug 29, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Kathleen A. Leinen, D.O. located?
The NPPES record lists a practice address at 106 S 1St St Ste 100, Fairbury, IL, 61739. Phone: (815) 692-2308. Providers update this record themselves, so call before visiting.
How can I verify Kathleen A. Leinen, D.O.'s license?
NPPES lists Illinois license number 036121354, 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 Kathleen A. Leinen, D.O. prescribe under Medicare Part D?
In 2024, Kathleen A. Leinen, D.O. had 4,133 Medicare Part D claims for 431 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.