Adam Jon Leestma, FNP
- Part D claims, 2024
- 4,921
- Hospital affiliations
- 6
- Industry payments
- $831
- Medical group
- 1
- State license
- 1
- Practice address
- 25 North Winfield Road, Winfield, IL 60190
- Practice phone
- Call (630) 682-1600
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Adam Leestma'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.
Adam Jon Leestma is a family nurse practitioner in Winfield, Illinois
Adam Leestma practices at Northwestern Medicine Central DuPage Hospital in Winfield, Illinois, part of Northwestern Memorial HealthCare.
Adam Leestma's NPI, 1891230140, was assigned on December 22, 2016. Adam Leestma holds Indiana license 28199079A.
- NPI
- 1891230140NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0840575213
- NPI enumeration date
- December 22, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (630) 682-1600
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- 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)
Adam Jon Leestma practices at Northwestern Medicine Central DuPage Hospital in Winfield, Illinois
Adam Leestma's primary practice is Northwestern Medicine Central DuPage Hospital, at 25 North Winfield Road, Winfield, IL 60190 in Du Page County. The practice phone is (630) 682-1600.
- Northwestern Medicine Central DuPage Hospital25 North Winfield Road, Winfield, IL 60190 · Du Page CountyPhone(630) 682-1600
Source: Dmand AI Affiliation Data
Adam Jon Leestma is affiliated with 10 sites of care and 1 medical group
Adam Leestma's primary practice is Northwestern Medicine Central DuPage Hospital in Winfield, Illinois, part of Northwestern Memorial HealthCare. Adam Leestma is also affiliated with Franciscan Health Crown Point. The medical group on file is Leestma Healthcare. Dmand AI also links Adam Leestma to 4 more hospitals, 1 breast imaging center, 1 clinical lab, 1 group practice or clinic and 1 home health agency, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Adam Jon Leestma's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Adam Leestma practices, 10 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northwestern Medicine Central DuPage Hospital | Available with a free account |
| +9 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 Northwestern Memorial HealthCare and 6.2K+ hospitals, with verified contacts in the same login.
Adam Jon Leestma is one of 7,275 family nurse practitioners in Illinois
Family is Adam Leestma's primary specialty in the NPI Registry, under taxonomy code 363LF0000X. Adam Leestma is licensed in Indiana.
Specialties and state licenses
- Family nurse practitioner, IndianaPrimary
Family nurse practitioners near Adam Leestma
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
Adam Jon Leestma's patients have a median age of 68
Across all payers, Dmand AI patient panel data puts Adam Leestma's median patient age at 68, with 46% women.
Adam Leestma's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women46%
- Men53%
Source: Dmand AI Patient Panel Data
Adam Jon Leestma wrote 4,921 Medicare Part D claims in 2024
In 2024, Adam Leestma wrote 4,921 Medicare Part D claims for 540 patients. 85% of them were for generic drugs.
Adam Leestma's Part D claims by kind of drug, 2024
- Generic4,191 claims85%
- Brand-name686 claims14%
- Other44 claims1%
Drug classes CMS tracks in Adam Leestma's Part D claims, 2024
- Opioids5%248 of 4,921 claims
- Antibiotics4%195 of 4,921 claims
- Antipsychotics, patients 65 and over1%29 of 4,921 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 Adam Jon Leestma takes part in Medicare
Adam Leestma 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)
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Adam Jon Leestma received $831 in industry payments in 2025
CMS Open Payments shows 35 general payments to Adam Leestma from 15 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $203.
Companies that paid Adam Leestma 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 Adam Jon Leestma'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 Data |
| 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 Adam Jon Leestma
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Adam Jon Leestma's NPI number?
Adam Jon Leestma's NPI number is 1891230140. It was assigned on December 22, 2016, and it is active in the NPI Registry.
What does Adam Jon Leestma specialize in?
Adam Jon Leestma is a family nurse practitioner in Winfield, Illinois. The primary specialty in the NPI Registry is Family Nurse Practitioner (taxonomy code 363LF0000X).
Where does Adam Jon Leestma practice?
Adam Leestma practices at 25 North Winfield Road, Winfield, IL 60190. Adam Leestma's primary practice is Northwestern Medicine Central DuPage Hospital in Winfield, Illinois, part of Northwestern Memorial HealthCare. Dmand AI also links Adam Leestma to 4 hospitals, 1 breast imaging center, 1 clinical lab, 1 group practice or clinic and 1 home health agency.
What is Adam Jon Leestma's office phone number?
The practice phone on file for Adam Leestma is (630) 682-1600.
What is Adam Jon Leestma's medical license number?
Adam Leestma holds Indiana license 28199079A.
Which hospitals is Adam Jon Leestma affiliated with?
Adam Leestma practices at Northwestern Medicine Central DuPage Hospital in Winfield, Illinois. Adam Leestma is also affiliated with Franciscan Health Crown Point. Dmand AI links Adam Leestma to 4 more hospitals.
What medical group is Adam Jon Leestma part of?
Adam Leestma is linked to Leestma Healthcare.
Does Adam Jon Leestma accept Medicare?
Yes. CMS lists Adam Leestma as accepting Medicare assignment.
Has Adam Jon Leestma received payments from drug or device companies?
CMS Open Payments shows $831 in general payments to Adam Leestma from 15 companies from 2025 to 2025. The largest total came from Abbvie Inc.
How long has Adam Jon Leestma been practicing?
Adam Leestma graduated from medical school in 2016, 10 years ago.
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