Marissa Hornacek, MSN, BSN, RN
NPI 1619697208 · Adult Health Nurse Practitioner · New York, NY
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marissa Hornacek, MSN, BSN, RN is a Adult Health Nurse Practitioner provider in New York, NY (NPI 1619697208).
Provider details
- NPI number
- 1619697208
- Entity type
- Individual
- Primary specialty
- Adult Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- MSN, BSN, RN
- Sex
- Female
- Sole proprietor
- No
- License
- 310885 (NY)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
3 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Acyclovir | 36 | 14 |
| Atovaquone | 30 | 11 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 22 | 12 |
| Ruxolitinib Phosphatebrand: Jakafi | 13 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$25 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-09-01
- Last updated
- 2022-09-01
- Certified
- 2022-06-19
Frequently asked questions
- What is Marissa Hornacek's NPI number?
- Marissa Hornacek's National Provider Identifier (NPI) is 1619697208, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marissa Hornacek's specialty?
- Marissa Hornacek is listed in the NPPES registry with a primary specialty of Adult Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Marissa Hornacek located?
- Marissa Hornacek's practice location on file with NPPES is 610 2nd Ave, New York, NY 10016-4859.
- What is Marissa Hornacek's phone number?
- The practice phone number listed in the NPPES registry for Marissa Hornacek is (732) 500-7114.
- Does Marissa Hornacek accept Medicare?
- Marissa Hornacek is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marissa Hornacek's NPI active?
- Yes — Marissa Hornacek's NPI (1619697208) is active in the NPPES registry as of the last update on 2022-09-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.