Casey Jo Mifflin, FNP-BC
- Medicare patients, 2024
- 115
- Part D claims, 2024
- 262
- MIPS score, 2024
- 75
- Hospital affiliations
- 5
- Industry payments
- $185
- Practice address
- 751 N Rutledge St, Springfield, IL 62702
- Practice phone
- Call (217) 545-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
SIU Healthcare
Springfield, Illinois
Find Casey Mifflin's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Casey Jo Mifflin is a family nurse practitioner in Springfield, Illinois
Casey Mifflin practices at SIU Healthcare in Springfield, Illinois.
Casey Mifflin's NPI, 1528737897, was assigned on September 9, 2021. Casey Mifflin holds Illinois license 209.023982.
- NPI
- 1528737897NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1658779665
- NPI enumeration date
- September 9, 2021
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (217) 545-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 31
- Medical school graduation
- 2021
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Casey Jo Mifflin practices at SIU Healthcare in Springfield, Illinois
Casey Mifflin's primary practice is SIU Healthcare, at 751 N Rutledge St, Springfield, IL 62702 in Sangamon County. The practice phone is (217) 545-8000.
- SIU Healthcare751 N Rutledge St, Springfield, IL 62702 · Sangamon CountyPhone(217) 545-8000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Casey Jo Mifflin is affiliated with 8 sites of care and 2 medical groups
Casey Mifflin's primary practice is SIU Healthcare in Springfield, Illinois. Casey Mifflin is also affiliated with Springfield Memorial Hospital. The medical group on file is SIU Medicine. Dmand AI also links Casey Mifflin to 4 more hospitals, 2 group practices and clinics and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Casey Jo Mifflin's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Casey Mifflin practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| SIU Healthcare | Available with a free account |
| +7 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Casey Jo Mifflin is one of 7,275 family nurse practitioners in Illinois
Family is Casey Mifflin's primary specialty in the NPI Registry, under taxonomy code 363LF0000X. Casey Mifflin is licensed in Illinois.
Specialties and state licenses
- Family nurse practitioner, IllinoisPrimary
Family nurse practitioners near Casey Mifflin
Counts of family nurse practitioners with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Casey Jo Mifflin treated 115 Medicare patients in 2024, average age 74
CMS counts 115 Medicare patients who saw Casey Mifflin in 2024. The largest group is 75 to 84, with 50 patients. 75% of them have high cholesterol, and 73% have high blood pressure. 13% are also on Medicaid. Their average risk score is 0.87, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Casey Mifflin's median patient age at 67, with 99% women.
Casey Mifflin's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Casey Mifflin's Medicare patients, 2024
- High cholesterol75%
- High blood pressure73%
- Arthritis48%
- Anxiety31%
- Diabetes29%
- Mood disorders29%
- Depression27%
- Ischemic heart disease22%
Share of Medicare patients with each condition. A patient can have several.
Casey Mifflin's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women99%
- Men0%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Casey Jo Mifflin wrote 262 Medicare Part D claims in 2024
In 2024, Casey Mifflin wrote 262 Medicare Part D claims for 111 patients. 65% of them were for generic drugs.
Casey Mifflin's Part D claims by kind of drug, 2024
- Generic169 claims65%
- Brand-name93 claims35%
Drug classes CMS tracks in Casey Mifflin's Part D claims, 2024
- Antibiotics17%45 of 262 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Casey Jo Mifflin scored 75 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Casey Mifflin for performance year 2024, reported as part of a group. Casey Mifflin accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
- MIPS final score, 2024
- 75 of 100
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Casey Jo Mifflin received $185 in industry payments in 2025
CMS Open Payments shows 2 general payments to Casey Mifflin from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Sumitomo Pharma America, Inc. paid the most, $123.
Companies that paid Casey Mifflin the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Casey Jo Mifflin's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Casey Jo Mifflin
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Casey Jo Mifflin's NPI number?
Casey Jo Mifflin's NPI number is 1528737897. It was assigned on September 9, 2021, and it is active in the NPI Registry.
What does Casey Jo Mifflin specialize in?
Casey Jo Mifflin is a family nurse practitioner in Springfield, Illinois. The primary specialty in the NPI Registry is Family Nurse Practitioner (taxonomy code 363LF0000X).
Where does Casey Jo Mifflin practice?
Casey Mifflin practices at 751 N Rutledge St, Springfield, IL 62702. Casey Mifflin's primary practice is SIU Healthcare in Springfield, Illinois. Dmand AI also links Casey Mifflin to 4 hospitals, 2 group practices and clinics and 1 medical group.
What is Casey Jo Mifflin's office phone number?
The practice phone on file for Casey Mifflin is (217) 545-8000.
What is Casey Jo Mifflin's medical license number?
Casey Mifflin holds Illinois license 209.023982.
Which hospitals is Casey Jo Mifflin affiliated with?
Casey Mifflin is affiliated with Springfield Memorial Hospital. Dmand AI links Casey Mifflin to 4 more hospitals.
What medical group is Casey Jo Mifflin part of?
Casey Mifflin is linked to SIU Medicine. Dmand AI links Casey Mifflin to 1 more medical group.
Does Casey Jo Mifflin accept Medicare?
Yes. CMS lists Casey Mifflin as accepting Medicare assignment.
What is Casey Jo Mifflin's MIPS score?
Casey Mifflin's MIPS final score for performance year 2024 is 75 out of 100, reported as part of a group.
How many Medicare patients does Casey Jo Mifflin see?
CMS counts 115 Medicare patients who saw Casey Mifflin in 2024, with an average age of 74.
Has Casey Jo Mifflin received payments from drug or device companies?
CMS Open Payments shows $185 in general payments to Casey Mifflin from 2 companies from 2025 to 2025. The largest total came from Sumitomo Pharma America, Inc.
How long has Casey Jo Mifflin been practicing?
Casey Mifflin graduated from medical school in 2021, 5 years ago.
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