Alyssa Marsillo, P.A.
NPI 1568802692 · Medical Physician Assistant · West Seneca, NY
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alyssa Marsillo, P.A. is a Medical Physician Assistant provider in West Seneca, NY (NPI 1568802692).
Provider details
- NPI number
- 1568802692
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- P.A.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 016597 (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 tenure25% of score
12 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
12 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 12 | $78 |
Typical Medicare-allowed amounts for these services range $78–$78 (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 · 24 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Methotrexate Sodiumbrand: Methotrexate | 177 | 47 |
| Hydroxychloroquine Sulfate | 147 | 37 |
| Prednisone | 134 | 57 |
| Adalimumabbrand: Humira(cf) Pen | 66 | 16 |
| Abataceptbrand: Orencia Clickject | 44 | — |
| Pantoprazole Sodium | 39 | 27 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$41 across 2 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
Registry dates
- Enumerated
- 2013-07-03
- Last updated
- 2023-04-28
- Certified
- 2023-04-28
Frequently asked questions
- What is Alyssa Marsillo's NPI number?
- Alyssa Marsillo's National Provider Identifier (NPI) is 1568802692, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alyssa Marsillo's specialty?
- Alyssa Marsillo is listed in the NPPES registry with a primary specialty of Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Alyssa Marsillo located?
- Alyssa Marsillo's practice location on file with NPPES is 3030 Orchard Park Rd, West Seneca, NY 14224-4638.
- What is Alyssa Marsillo's phone number?
- The practice phone number listed in the NPPES registry for Alyssa Marsillo is (716) 671-2507.
- Does Alyssa Marsillo accept Medicare?
- Alyssa Marsillo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alyssa Marsillo's NPI active?
- Yes — Alyssa Marsillo's NPI (1568802692) is active in the NPPES registry as of the last update on 2023-04-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.