Marissa Boniszewski
NPI 1780181347 · Internal Medicine Physician · Williamsville, NY
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marissa Boniszewski is a Internal Medicine Physician provider in Williamsville, NY (NPI 1780181347).
Provider details
- NPI number
- 1780181347
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
8 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
376 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 217 | $77 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 79 | $117 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 35 | $171 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 34 | $113 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 11 | $128 |
Typical Medicare-allowed amounts for these services range $77–$171 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$94 across 4 records (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
Additional practice locations (1)
- 462 Grider StErie County Medical Center, David K. Miller BuildingBuffalo, NY 14215-3021Phone: (716) 898-3941Fax: (716) 898-3279
Registry dates
- Enumerated
- 2018-04-10
- Last updated
- 2025-03-26
- Certified
- 2025-03-26
Frequently asked questions
- What is Marissa Boniszewski's NPI number?
- Marissa Boniszewski's National Provider Identifier (NPI) is 1780181347, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marissa Boniszewski's specialty?
- Marissa Boniszewski is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Marissa Boniszewski located?
- Marissa Boniszewski's practice location on file with NPPES is 325 Essjay Rd, Williamsville, NY 14221-8243.
- What is Marissa Boniszewski's phone number?
- The practice phone number listed in the NPPES registry for Marissa Boniszewski is (716) 656-4868.
- Does Marissa Boniszewski accept Medicare?
- Marissa Boniszewski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marissa Boniszewski's NPI active?
- Yes — Marissa Boniszewski's NPI (1780181347) is active in the NPPES registry as of the last update on 2025-03-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.