Geraldine Holtz, NP
NPI 1518411081 · Nurse Practitioner · Mchenry, IL
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Geraldine Holtz, NP is a Nurse Practitioner provider in Mchenry, IL (NPI 1518411081).
Provider details
- NPI number
- 1518411081
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- 209.014862 (IL)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
9 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
199 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 165 | $67 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 34 | $101 |
Typical Medicare-allowed amounts for these services range $67–$101 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluticasone/Umeclidin/Vilanterbrand: Trelegy Ellipta | 131 | 47 |
| Prednisone | 104 | 84 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 77 | 42 |
| Umeclidinium Brm/Vilanterol Trbrand: Anoro Ellipta | 64 | 27 |
| Fluticasone/Vilanterolbrand: Breo Ellipta | 50 | 21 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 34 | 33 |
Practice location
Mailing address
Additional practice locations (1)
- 10350 Haligus Rd Ste CHuntley, IL 60142-9545Phone: (847) 802-7400Fax: (847) 802-7399
Registry dates
- Enumerated
- 2016-08-12
- Last updated
- 2020-09-03
- Certified
- 2020-09-03
Frequently asked questions
- What is Geraldine Holtz's NPI number?
- Geraldine Holtz's National Provider Identifier (NPI) is 1518411081, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Geraldine Holtz's specialty?
- Geraldine Holtz is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Geraldine Holtz located?
- Geraldine Holtz's practice location on file with NPPES is 4309 W Medical Center Dr Ste B305, Mchenry, IL 60050-8418.
- What is Geraldine Holtz's phone number?
- The practice phone number listed in the NPPES registry for Geraldine Holtz is (847) 802-7400.
- Does Geraldine Holtz accept Medicare?
- Geraldine Holtz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Geraldine Holtz's NPI active?
- Yes — Geraldine Holtz's NPI (1518411081) is active in the NPPES registry as of the last update on 2020-09-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.