Jillian Marsilio, PA-C
NPI 1598229742 · Physician Assistant · Ronkonkoma, NY
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jillian Marsilio, PA-C is a Physician Assistant provider in Ronkonkoma, NY (NPI 1598229742).
Provider details
- NPI number
- 1598229742
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- Yes
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
7 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
4,396 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 Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 3,368 | $68 |
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 872 | $94 |
| Nursing Facility Discharge Management, More Than 30 Minutes99316 | 156 | $118 |
Typical Medicare-allowed amounts for these services range $68–$118 (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 · 30 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 57 | 29 |
| Atorvastatin Calcium | 55 | 46 |
| Lorazepam | 55 | — |
| Alprazolam | 53 | — |
| Oxycodone Hcl | 49 | — |
| Potassium Chloride | 34 | 27 |
| Gabapentin | 32 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$209 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
- 2019-01-22
- Last updated
- 2021-06-24
- Certified
- 2021-06-24
Frequently asked questions
- What is Jillian Marsilio's NPI number?
- Jillian Marsilio's National Provider Identifier (NPI) is 1598229742, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jillian Marsilio's specialty?
- Jillian Marsilio is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Jillian Marsilio located?
- Jillian Marsilio's practice location on file with NPPES is 3505 Veterans Memorial Hwy Ste C, Ronkonkoma, NY 11779-7613.
- What is Jillian Marsilio's phone number?
- The practice phone number listed in the NPPES registry for Jillian Marsilio is (631) 676-7656.
- Does Jillian Marsilio accept Medicare?
- Jillian Marsilio is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jillian Marsilio's NPI active?
- Yes — Jillian Marsilio's NPI (1598229742) is active in the NPPES registry as of the last update on 2021-06-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.