Holly A. Clark, NP
- Part D claims, 2024
- 825
- Hospital affiliations
- 3
- Industry payments
- $605
- Medical groups
- 2
- 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 Holly Clark'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.
Holly A. Clark is a nurse practitioner in Winfield, Illinois
Holly Clark practices at Northwestern Medicine Central DuPage Hospital in Winfield, Illinois, part of Northwestern Memorial HealthCare.
Holly Clark's NPI, 1205823093, was assigned on October 5, 2005. Holly Clark holds Illinois license 277-000934.
- NPI
- 1205823093NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0446259170
- NPI enumeration date
- October 5, 2005
- 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
- Female
- Estimated age
- 55
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Holly A. Clark practices at Northwestern Medicine Central DuPage Hospital in Winfield, Illinois
Holly Clark'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
Holly A. Clark is affiliated with 6 sites of care and 2 medical groups
Holly Clark's primary practice is Northwestern Medicine Central DuPage Hospital in Winfield, Illinois, part of Northwestern Memorial HealthCare. Holly Clark is also affiliated with Northwestern Medicine Palos Hospital. The medical group on file is Northwestern Medicine Regional Medical Group. Dmand AI also links Holly Clark to 1 more hospital, 1 breast imaging center, 1 clinical lab, 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Holly A. Clark's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Holly Clark practices, 6 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 |
| +5 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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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.
Holly A. Clark is one of 4,254 nurse practitioners in Illinois
Nurse practitioner is Holly Clark's primary specialty in the NPI Registry, under taxonomy code 363L00000X. Holly Clark is licensed in Illinois.
Specialties and state licenses
- Nurse practitioner, IllinoisPrimary
Nurse practitioners near Holly Clark
Counts of 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
Holly A. Clark's patients have a median age of 68
Across all payers, Dmand AI patient panel data puts Holly Clark's median patient age at 68, with 64% women.
Holly Clark'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
- Women64%
- Men34%
Source: Dmand AI Patient Panel Data
Holly A. Clark wrote 825 Medicare Part D claims in 2024
In 2024, Holly Clark wrote 825 Medicare Part D claims for 204 patients. 90% of them were for generic drugs.
Holly Clark's Part D claims by kind of drug, 2024
- Generic739 claims90%
- Brand-name and other86 claims10%
Drug classes CMS tracks in Holly Clark's Part D claims, 2024
- Antibiotics10%86 of 825 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 Holly A. Clark takes part in Medicare
Holly Clark 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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Holly A. Clark received $605 in industry payments in 2025
CMS Open Payments shows 17 general payments to Holly Clark from 9 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Eli Lilly and Company paid the most, $142.
Companies that paid Holly Clark 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 Holly A. Clark'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 Holly A. Clark
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Holly A. Clark's NPI number?
Holly A. Clark's NPI number is 1205823093. It was assigned on October 5, 2005, and it is active in the NPI Registry.
What does Holly A. Clark specialize in?
Holly A. Clark is a nurse practitioner in Winfield, Illinois. The primary specialty in the NPI Registry is Nurse Practitioner (taxonomy code 363L00000X).
Where does Holly A. Clark practice?
Holly Clark practices at 25 North Winfield Road, Winfield, IL 60190. Holly Clark's primary practice is Northwestern Medicine Central DuPage Hospital in Winfield, Illinois, part of Northwestern Memorial HealthCare. Dmand AI also links Holly Clark to 1 hospital, 1 breast imaging center, 1 clinical lab, 1 group practice or clinic and 1 medical group.
What is Holly A. Clark's office phone number?
The practice phone on file for Holly Clark is (630) 682-1600.
What is Holly A. Clark's medical license number?
Holly Clark holds Illinois license 277-000934.
Which hospitals is Holly A. Clark affiliated with?
Holly Clark practices at Northwestern Medicine Central DuPage Hospital in Winfield, Illinois. Holly Clark is also affiliated with Northwestern Medicine Palos Hospital. Dmand AI links Holly Clark to 1 more hospital.
What medical group is Holly A. Clark part of?
Holly Clark is linked to Northwestern Medicine Regional Medical Group. Dmand AI links Holly Clark to 1 more medical group.
Does Holly A. Clark accept Medicare?
Yes. CMS lists Holly Clark as accepting Medicare assignment.
Has Holly A. Clark received payments from drug or device companies?
CMS Open Payments shows $605 in general payments to Holly Clark from 9 companies from 2025 to 2025. The largest total came from Eli Lilly and Company.
How long has Holly A. Clark been practicing?
Holly Clark graduated from medical school in 1997, 29 years ago.
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