Geraldine Holtz, NP
- Medicare patients, 2024
- 140
- Part D claims, 2024
- 744
- MIPS score, 2024
- 96
- Hospital affiliations
- 3
- Industry payments
- $108
- Practice address
- 4201 Medical Center Drive, Mchenry, IL 60050
- Practice phone
- Call (815) 344-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Geraldine Holtz'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.
Geraldine Holtz is a nurse practitioner in Mchenry, Illinois
Geraldine Holtz practices at Northwestern Medicine McHenry Hospital in Mchenry, Illinois, part of Northwestern Memorial HealthCare.
Geraldine Holtz's NPI, 1518411081, was assigned on August 12, 2016. Geraldine Holtz holds Illinois license 209014862.
- NPI
- 1518411081NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6800178823
- NPI enumeration date
- August 12, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (815) 344-5000
- 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)
Geraldine Holtz practices at Northwestern Medicine McHenry Hospital in Mchenry, Illinois
Geraldine Holtz's primary practice is Northwestern Medicine McHenry Hospital, at 4201 Medical Center Drive, Mchenry, IL 60050 in Mc Henry County. The practice phone is (815) 344-5000.
- Northwestern Medicine McHenry Hospital4201 Medical Center Drive, Mchenry, IL 60050 · Mc Henry CountyPhone(815) 344-5000
Source: Dmand AI Affiliation Data
Geraldine Holtz is affiliated with 4 sites of care and 1 medical group
Geraldine Holtz's primary practice is Northwestern Medicine McHenry Hospital in Mchenry, Illinois, part of Northwestern Memorial HealthCare. Geraldine Holtz is also affiliated with Northwestern Medicine Central DuPage Hospital. The medical group on file is Northwestern Medicine Regional Medical Group. Dmand AI also links Geraldine Holtz to 1 more hospital and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Geraldine Holtz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Geraldine Holtz practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northwestern Medicine McHenry Hospital | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Geraldine Holtz is one of 4,254 nurse practitioners in Illinois
Nurse practitioner is Geraldine Holtz's primary specialty in the NPI Registry, under taxonomy code 363L00000X. Geraldine Holtz is licensed in Illinois.
Specialties and state licenses
- Nurse practitioner, IllinoisPrimary
Nurse practitioners near Geraldine Holtz
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
Geraldine Holtz treated 140 Medicare patients in 2024, average age 78
CMS counts 140 Medicare patients who saw Geraldine Holtz in 2024. The largest group is 75 to 84, with 64 patients. 75% of them have copd, and 75% have high blood pressure. 18% are also on Medicaid. Their average risk score is 2.67, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Geraldine Holtz's median patient age at 75, with 63% women.
Geraldine Holtz's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Geraldine Holtz's Medicare patients by sex, 2024
- Women7352%
- Men6748%
Chronic conditions among Geraldine Holtz's Medicare patients, 2024
- COPD75%
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease75%
- Heart failure66%
- Anxiety59%
- Chronic kidney disease57%
- Atrial fibrillation54%
Share of Medicare patients with each condition. A patient can have several.
Geraldine Holtz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women63%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Geraldine Holtz wrote 744 Medicare Part D claims in 2024
In 2024, Geraldine Holtz wrote 744 Medicare Part D claims for 304 patients. 44% of them were for generic drugs.
Geraldine Holtz's Part D claims by kind of drug, 2024
- Generic328 claims44%
- Brand-name416 claims56%
Drug classes CMS tracks in Geraldine Holtz's Part D claims, 2024
- Antibiotics11%84 of 744 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
Geraldine Holtz scored 96 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 96 out of 100 for Geraldine Holtz for performance year 2024, reported through an alternative payment model (APM). Geraldine Holtz accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Geraldine Holtz's MIPS scores, performance year 2024
- 96of 100Final score
- 88.5of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
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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Geraldine Holtz received $108 in industry payments in 2025
CMS Open Payments shows 1 general payment to Geraldine Holtz from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Verona Pharma, Inc. paid the most, $108.
Companies that paid Geraldine Holtz 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 Geraldine Holtz'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)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 Geraldine Holtz
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Geraldine Holtz's NPI number?
Geraldine Holtz's NPI number is 1518411081. It was assigned on August 12, 2016, and it is active in the NPI Registry.
What does Geraldine Holtz specialize in?
Geraldine Holtz is a nurse practitioner in Mchenry, Illinois. The primary specialty in the NPI Registry is Nurse Practitioner (taxonomy code 363L00000X).
Where does Geraldine Holtz practice?
Geraldine Holtz practices at 4201 Medical Center Drive, Mchenry, IL 60050. Geraldine Holtz's primary practice is Northwestern Medicine McHenry Hospital in Mchenry, Illinois, part of Northwestern Memorial HealthCare. Dmand AI also links Geraldine Holtz to 1 hospital and 1 group practice or clinic.
What is Geraldine Holtz's office phone number?
The practice phone on file for Geraldine Holtz is (815) 344-5000.
What is Geraldine Holtz's medical license number?
Geraldine Holtz holds Illinois license 209014862.
Which hospitals is Geraldine Holtz affiliated with?
Geraldine Holtz practices at Northwestern Medicine McHenry Hospital in Mchenry, Illinois. Geraldine Holtz is also affiliated with Northwestern Medicine Central DuPage Hospital. Dmand AI links Geraldine Holtz to 1 more hospital.
What medical group is Geraldine Holtz part of?
Geraldine Holtz is linked to Northwestern Medicine Regional Medical Group.
Does Geraldine Holtz accept Medicare?
Yes. CMS lists Geraldine Holtz as accepting Medicare assignment.
What is Geraldine Holtz's MIPS score?
Geraldine Holtz's MIPS final score for performance year 2024 is 96 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Geraldine Holtz see?
CMS counts 140 Medicare patients who saw Geraldine Holtz in 2024, with an average age of 78.
Has Geraldine Holtz received payments from drug or device companies?
CMS Open Payments shows $108 in general payments to Geraldine Holtz from 1 company from 2025 to 2025. The largest total came from Verona Pharma, Inc.
How long has Geraldine Holtz been practicing?
Geraldine Holtz graduated from medical school in 2016, 10 years ago.
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