Millie Kooistra
- Medicare patients, 2024
- 115
- Part D claims, 2024
- 1,008
- Hospital affiliations
- 5
- Industry payments
- $242
- Medical group
- 1
- Practice address
- 721 E Court Street, Paris, IL 61944
- Practice phone
- Call (217) 465-4141
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Millie Kooistra'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.
Millie Kooistra is a family nurse practitioner in Paris, Illinois
Millie Kooistra practices at Horizon Health in Paris, Illinois, part of Horizon Health.
Millie Kooistra's NPI, 1295279958, was assigned on December 14, 2016. Millie Kooistra holds Indiana license 28174208A.
- NPI
- 1295279958NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2264706423
- NPI enumeration date
- December 14, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (217) 465-4141
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Millie Kooistra practices at Horizon Health in Paris, Illinois
Millie Kooistra's primary practice is Horizon Health, at 721 E Court Street, Paris, IL 61944 in Edgar County. The practice phone is (217) 465-4141.
- Horizon Health721 E Court Street, Paris, IL 61944 · Edgar CountyPhone(217) 465-4141
Source: Dmand AI Affiliation Data
Millie Kooistra is affiliated with 5 sites of care and 1 medical group
Millie Kooistra's primary practice is Horizon Health in Paris, Illinois, part of Horizon Health. Millie Kooistra is also affiliated with Union Hospital. The medical group on file is Horizon Health. Dmand AI also links Millie Kooistra to 3 more hospitals, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Millie Kooistra's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Millie Kooistra practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Horizon Health | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Horizon Health and 6.2K+ hospitals, with verified contacts in the same login.
Millie Kooistra is one of 7,275 family nurse practitioners in Illinois
Family is Millie Kooistra's primary specialty in the NPI Registry, under taxonomy code 363LF0000X. Millie Kooistra is licensed in Indiana.
Specialties and state licenses
- Family nurse practitioner, IndianaPrimary
Family nurse practitioners near Millie Kooistra
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
Millie Kooistra treated 115 Medicare patients in 2024, average age 77
CMS counts 115 Medicare patients who saw Millie Kooistra in 2024. The largest group is 75 to 84, with 50 patients. 75% of them have arthritis, and 75% have high blood pressure. 11% are also on Medicaid. Their average risk score is 1.63, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Millie Kooistra's median patient age at 69, with 80% women.
Millie Kooistra's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Millie Kooistra's Medicare patients by sex, 2024
- Women10490%
- Men1110%
Chronic conditions among Millie Kooistra's Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol75%
- Osteoporosis75%
- Mood disorders43%
- Depression41%
- Anxiety39%
- Ischemic heart disease37%
Share of Medicare patients with each condition. A patient can have several.
Millie Kooistra's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women80%
- Men19%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Millie Kooistra wrote 1,008 Medicare Part D claims in 2024
In 2024, Millie Kooistra wrote 1,008 Medicare Part D claims for 120 patients. 65% of them were for generic drugs.
Millie Kooistra's Part D claims by kind of drug, 2024
- Generic660 claims65%
- Brand-name and other348 claims35%
Drug classes CMS tracks in Millie Kooistra's Part D claims, 2024
- Opioids1%14 of 1,008 claims
- Antibiotics2%24 of 1,008 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
How Millie Kooistra takes part in Medicare
Millie Kooistra accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
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Millie Kooistra received $242 in industry payments in 2025
CMS Open Payments shows 17 general payments to Millie Kooistra from 8 drug and device companies in 2025. Food and beverage make up the largest share, 95% of the total. Vertex Pharmaceuticals Incorporated paid the most, $54.
General payments to Millie Kooistra by kind, 2025 to 2025
- Food and beverage$23095%
- Education$115%
Companies that paid Millie Kooistra 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 Millie Kooistra'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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) |
| 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 Millie Kooistra
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Millie Kooistra's NPI number?
Millie Kooistra's NPI number is 1295279958. It was assigned on December 14, 2016, and it is active in the NPI Registry.
What does Millie Kooistra specialize in?
Millie Kooistra is a family nurse practitioner in Paris, Illinois. The primary specialty in the NPI Registry is Family Nurse Practitioner (taxonomy code 363LF0000X).
Where does Millie Kooistra practice?
Millie Kooistra practices at 721 E Court Street, Paris, IL 61944. Millie Kooistra's primary practice is Horizon Health in Paris, Illinois, part of Horizon Health. Dmand AI also links Millie Kooistra to 3 hospitals.
What is Millie Kooistra's office phone number?
The practice phone on file for Millie Kooistra is (217) 465-4141.
What is Millie Kooistra's medical license number?
Millie Kooistra holds Indiana license 28174208A.
Which hospitals is Millie Kooistra affiliated with?
Millie Kooistra practices at Horizon Health in Paris, Illinois. Millie Kooistra is also affiliated with Union Hospital. Dmand AI links Millie Kooistra to 3 more hospitals.
What medical group is Millie Kooistra part of?
Millie Kooistra is linked to Horizon Health.
Does Millie Kooistra accept Medicare?
Yes. CMS lists Millie Kooistra as accepting Medicare assignment.
How many Medicare patients does Millie Kooistra see?
CMS counts 115 Medicare patients who saw Millie Kooistra in 2024, with an average age of 77.
Has Millie Kooistra received payments from drug or device companies?
CMS Open Payments shows $242 in general payments to Millie Kooistra from 8 companies from 2025 to 2025. The largest total came from Vertex Pharmaceuticals Incorporated.
How long has Millie Kooistra been practicing?
Millie Kooistra graduated from medical school in 2016, 10 years ago.
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