Karen L. Ridenour, F.N.P., BC
Family Nurse Practitioner · Springfield, IL
Karen L. Ridenour, F.N.P., BC is a family nurse practitioner with a practice address in Springfield, Illinois, and NPI 1720347933, issued on May 8, 2012. Check the license (Illinois 209009534, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Karen L. Ridenour
- Credential
- F.N.P., BC
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 209009534 IL
Self-reported in NPPES; status is on the state search - Practice location
- 701 N First St Memorial Health System, Springfield, IL 62781
- Phone
- (618) 498-7108
- Enumerated
- May 8, 2012
- Record last updated
- Jan 5, 2022
- Fax
- (618) 498-7919
- Medicaid ID
- 209009534 IL
- Medicare enrollment
- Enrolled (PECOS I20120730000466); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 7,639 in Illinois → Look up another NPI →
Verify Karen L. Ridenour in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 209009534Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
64% fewer Medicare Part D claims than the average family nurse practitioner in 2024
464 Medicare Part D claims for 268 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 2% of claims.
Most prescribed
- Prednisone82 claims
- Azithromycin45 claims
- Amoxicillin-Clavulanate Potass37 claims
- Mupirocin33 claims
- Albuterol Sulfate Hfa28 claims
- Amoxicillin28 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 practice group's MIPS final score for 2023 (Medicare payment program): 74.4 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Anderson Medical Group LLCBethalto, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karen L. Ridenour among 7,639 family nurse practitioner records in Illinois
Karen L. Ridenour, F.N.P., BC is one of 7,639 family nurse practitioner 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 2012, is newer than 14% of them.
- NPI issued2012 · 14% of these records are older, 83% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2011 · median 2018 among the 4,778 with a school on file
- Record last updated2022 · 39% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
309 family nurse practitioner records list a practice address in Springfield
They are 309 of the 4,997 NPPES records with a practice address in Springfield, and 7,639 family nurse practitioner records in Illinois.
All 7,639 in Illinois → Every provider in Springfield → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Timothy Belden, RN, MSN, FNPSpringfield, IL 627811891974481
- Yuan Chen, NPSpringfield, IL 627811508202045
- Kelli Fisher, FNPSpringfield, IL 627811619222577
- Jessica Heil, MSN, FNP-CSpringfield, IL 627811174912364
- Peggy Knowski, NP-CSpringfield, IL 627811497093264
- Kimberley Knuuti, FNPSpringfield, IL 627811710438320
- Angela Lafrenz, APRN, CNPSpringfield, IL 627811326378175
- Heather Lansaw, FNPSpringfield, IL 627811255563995
Common questions
What is Karen L. Ridenour, F.N.P., BC's NPI number?
Karen L. Ridenour, F.N.P., BC's National Provider Identifier (NPI) is 1720347933, issued on May 8, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Karen L. Ridenour, F.N.P., BC located?
The NPPES record lists a practice address at 701 N First St Memorial Health System, Springfield, IL, 62781. Phone: (618) 498-7108. Providers update this record themselves, so call before visiting.
How can I verify Karen L. Ridenour, F.N.P., BC's license?
NPPES lists Illinois license number 209009534, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Karen L. Ridenour, F.N.P., BC prescribe under Medicare Part D?
In 2024, Karen L. Ridenour, F.N.P., BC had 464 Medicare Part D claims for 268 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Karen L. Ridenour, F.N.P., BC's MIPS final score?
The 2023 MIPS final score is 74.4 of 100, reported for the practice group. 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.