Casey Mifflin, FNP-BC
Family Nurse Practitioner · Springfield, IL
Casey Mifflin, FNP-BC is a family nurse practitioner with a practice address in Springfield, Illinois, and NPI 1528737897, issued on Sep 9, 2021. Check the license (Illinois 209.023982, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Casey Mifflin
- Credential
- FNP-BC
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 209.023982 IL
Self-reported in NPPES; status is on the state search - Practice location
- 751 N Rutledge St Lowr Level, Springfield, IL 62702
- Phone
- (217) 545-8000
- Enumerated
- Sep 9, 2021
- Record last updated
- Jan 29, 2024
- Fax
- (217) 545-1011
- Medicare enrollment
- Enrolled (PECOS I20211005003478); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 7,639 in Illinois → Look up another NPI →
Also registered at 751 N Rutledge St Lowr Level
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mary Hitt, FNPFamily Nurse Practitioner1528393097
- Audra Horn, FNP-BCFamily Nurse Practitioner1437798899
Verify Casey Mifflin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 209.023982Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average family nurse practitioner in 2024
262 Medicare Part D claims for 111 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 35% of claims.
Most prescribed
- Estradiol116 claims
- Gemtesa42 claims
- Myrbetriq41 claims
- Nitrofurantoin Mono-Macro26 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: $229.52
2 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, Inc. The 99,489 providers of this specialty with any payment received $650.95 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
- Siu Physicians And Surgeons IncSpringfield, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Casey Mifflin among 7,639 family nurse practitioner records in Illinois
Casey Mifflin, FNP-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 2021, is newer than 65% of them.
- NPI issued2021 · 65% of these records are older, 28% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2021 · median 2018 among the 4,778 with a school on file
- Record last updated2024 · 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
- Theresa Boley, CFNPSpringfield, IL 627021184605743
- Lorrie Cuartas, WHNP, FNP-BCSpringfield, IL 627021649271073
- Mary Ditman, C.F.N.P.Springfield, IL 627021114920139
- Airn Etherton, FNP-BCSpringfield, IL 627021114115920
- Pamela Kelley, C.N.P.Springfield, IL 627021588852107
- Denise Mears, FNP-BC, PNP-BCSpringfield, IL 627021326136870
- Christopher Mogren, CFNPSpringfield, IL 627021417147927
- Linda Read, FNP-BCSpringfield, IL 627021326242629
Common questions
What is Casey Mifflin, FNP-BC's NPI number?
Casey Mifflin, FNP-BC's National Provider Identifier (NPI) is 1528737897, issued on Sep 9, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Casey Mifflin, FNP-BC located?
The NPPES record lists a practice address at 751 N Rutledge St Lowr Level, Springfield, IL, 62702. Phone: (217) 545-8000. Providers update this record themselves, so call before visiting.
How can I verify Casey Mifflin, FNP-BC's license?
NPPES lists Illinois license number 209.023982, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Casey Mifflin, FNP-BC prescribe under Medicare Part D?
In 2024, Casey Mifflin, FNP-BC had 262 Medicare Part D claims for 111 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.