Katherine E. Clancy, FNP
Nurse Practitioner · O Fallon, MO
Katherine E. Clancy, FNP is a nurse practitioner with a practice address in O Fallon, Missouri, and NPI 1568724284, issued on Jun 8, 2012. Check the license (Missouri 2012009885, as entered in NPPES) with the Missouri board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Katherine E. Clancy
- Credential
- FNP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 2012009885 MO
Self-reported in NPPES; status is on the state search - Practice location
- 2630 Highway K, O Fallon, MO 63368
- Phone
- (636) 980-5300
- Enumerated
- Jun 8, 2012
- Record last updated
- Dec 9, 2025
- Fax
- (636) 980-5344
- Medicare enrollment
- Enrolled (PECOS I20120705000151); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 1,720 in Missouri → Look up another NPI →
Also registered at 2630 Highway K
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Katherine E. Clancy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Missouri board licenses this profession
Search for license 2012009885Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
49% fewer Medicare Part D claims than the average nurse practitioner in 2024
565 Medicare Part D claims for 398 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D.
Most prescribed
- Prednisone77 claims
- Doxycycline Hyclate67 claims
- Cephalexin52 claims
- Amoxicillin-Clavulanate Potass44 claims
- Albuterol Sulfate Hfa41 claims
- Methylprednisolone41 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): 89.2 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).
Bills Medicare through one group practice
- Physician Groups LCO Fallon, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine E. Clancy among 1,720 nurse practitioner records in Missouri
Katherine E. Clancy, FNP is one of 1,720 nurse practitioner records with a practice address in Missouri. 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 32% of them.
- NPI issued2012 · 32% of these records are older, 65% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2011 · median 2017 among the 1,080 with a school on file
- Record last updated2025 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
36 nurse practitioner records list a practice address in O Fallon
They are 36 of the 1,225 NPPES records with a practice address in O Fallon, and 1,720 nurse practitioner records in Missouri.
All 1,720 in Missouri → Every provider in O Fallon → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Kimberly Bonvillain, FNP-CO Fallon, MO 633681649561788
- Kimberly Burgess, FNPO Fallon, MO 633681356536288
- Melissa Godar, FNPO Fallon, MO 633681912383274
- Rachel Harris, NPO Fallon, MO 633681225499866
- Christine Lovellette, FNPO Fallon, MO 633681437336617
- Jennifer Phillips, APRN-CO Fallon, MO 633681700301272
- Kelly Schelich, APRN, FNP-CO Fallon, MO 633681427539030
- Beverly Schneider, FNP-BCO Fallon, MO 633681306112388
Common questions
What is Katherine E. Clancy, FNP's NPI number?
Katherine E. Clancy, FNP's National Provider Identifier (NPI) is 1568724284, issued on Jun 8, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Katherine E. Clancy, FNP located?
The NPPES record lists a practice address at 2630 Highway K, O Fallon, MO, 63368. Phone: (636) 980-5300. Providers update this record themselves, so call before visiting.
How can I verify Katherine E. Clancy, FNP's license?
NPPES lists Missouri license number 2012009885, as entered by the provider. Search the Missouri board that licenses this profession; the NPPES record confirms identity only.
How much does Katherine E. Clancy, FNP prescribe under Medicare Part D?
In 2024, Katherine E. Clancy, FNP had 565 Medicare Part D claims for 398 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.
What is Katherine E. Clancy, FNP's MIPS final score?
The 2023 MIPS final score is 89.2 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.