Maryeileen Zajac
- Part D claims, 2024
- 27
- MIPS score, 2024
- 95
- Hospital affiliations
- 1
- Industry payments
- $75
- Medical group
- 1
- Practice address
- 251 E Huron St, Chicago, IL 60611
- Practice phone
- Call (312) 926-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Maryeileen Zajac'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.
Maryeileen Zajac is a nurse practitioner in Chicago, Illinois
Maryeileen Zajac practices at Northwestern Memorial Hospital in Chicago, Illinois, part of Northwestern Memorial HealthCare.
Maryeileen Zajac's NPI, 1114511367, was assigned on February 26, 2021. Maryeileen Zajac holds Illinois license 209022729.
- NPI
- 1114511367NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7416365911
- NPI enumeration date
- February 26, 2021
- NPI status
- Active
- Practice phone
- (312) 926-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 32
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Maryeileen Zajac practices at Northwestern Memorial Hospital in Chicago, Illinois
Maryeileen Zajac's primary practice is Northwestern Memorial Hospital, at 251 E Huron St, Chicago, IL 60611 in Cook County. The practice phone is (312) 926-2000.
- Northwestern Memorial Hospital251 E Huron St, Chicago, IL 60611 · Cook CountyPhone(312) 926-2000
Source: Dmand AI Affiliation Data
Maryeileen Zajac is affiliated with 2 sites of care and 1 medical group
Maryeileen Zajac's primary practice is Northwestern Memorial Hospital in Chicago, Illinois, part of Northwestern Memorial HealthCare. The medical group on file is Northwestern Medical Faculty Foundation. Dmand AI also links Maryeileen Zajac to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Maryeileen Zajac's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Maryeileen Zajac practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northwestern Memorial Hospital | Available with a free account |
| +1 more affiliated site | 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.
Maryeileen Zajac is one of 4,254 nurse practitioners in Illinois
Nurse practitioner is Maryeileen Zajac's primary specialty in the NPI Registry, under taxonomy code 363L00000X. Maryeileen Zajac is licensed in Illinois.
Specialties and state licenses
- Nurse practitioner, IllinoisPrimary
Nurse practitioners near Maryeileen Zajac
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
Maryeileen Zajac's patients have a median age of 72
Across all payers, Dmand AI patient panel data puts Maryeileen Zajac's median patient age at 72, with 38% women.
Maryeileen Zajac's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women38%
- Men62%
Source: Dmand AI Patient Panel Data
Maryeileen Zajac wrote 27 Medicare Part D claims in 2024
In 2024, Maryeileen Zajac wrote 27 Medicare Part D claims. 93% of them were for generic drugs.
Maryeileen Zajac's Part D claims by kind of drug, 2024
- Generic25 claims93%
- Brand-name and other2 claims7%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Maryeileen Zajac scored 95 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 95 out of 100 for Maryeileen Zajac for performance year 2024, reported through an alternative payment model (APM).
Maryeileen Zajac's MIPS scores, performance year 2024
- 95of 100Final score
- 83of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Maryeileen Zajac received $75 in industry payments in 2025
CMS Open Payments shows 1 general payment to Maryeileen Zajac from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Kestra Medical Technology Services, Inc. paid the most, $75.
Companies that paid Maryeileen Zajac 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 Maryeileen Zajac'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 | 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 Maryeileen Zajac
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Maryeileen Zajac's NPI number?
Maryeileen Zajac's NPI number is 1114511367. It was assigned on February 26, 2021, and it is active in the NPI Registry.
What does Maryeileen Zajac specialize in?
Maryeileen Zajac is a nurse practitioner in Chicago, Illinois. The primary specialty in the NPI Registry is Nurse Practitioner (taxonomy code 363L00000X).
Where does Maryeileen Zajac practice?
Maryeileen Zajac practices at 251 E Huron St, Chicago, IL 60611. Maryeileen Zajac's primary practice is Northwestern Memorial Hospital in Chicago, Illinois, part of Northwestern Memorial HealthCare. Dmand AI also links Maryeileen Zajac to 1 group practice or clinic.
What is Maryeileen Zajac's office phone number?
The practice phone on file for Maryeileen Zajac is (312) 926-2000.
What is Maryeileen Zajac's medical license number?
Maryeileen Zajac holds Illinois license 209022729.
Which hospitals is Maryeileen Zajac affiliated with?
Maryeileen Zajac practices at Northwestern Memorial Hospital in Chicago, Illinois.
What medical group is Maryeileen Zajac part of?
Maryeileen Zajac is linked to Northwestern Medical Faculty Foundation.
What is Maryeileen Zajac's MIPS score?
Maryeileen Zajac's MIPS final score for performance year 2024 is 95 out of 100, reported through an alternative payment model (APM).
Has Maryeileen Zajac received payments from drug or device companies?
CMS Open Payments shows $75 in general payments to Maryeileen Zajac from 1 company from 2025 to 2025. The largest total came from Kestra Medical Technology Services, Inc.
How long has Maryeileen Zajac been practicing?
Maryeileen Zajac graduated from medical school in 2020, 6 years ago.
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