Olga Marsillio, DNP
NPI 1841558897 · Certified Registered Nurse Anesthetist · New London, CT
Enrolled with Medicare as Practitioner - Certified Registered Nurse Anesthetist (crna) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Olga Marsillio, DNP is a Certified Registered Nurse Anesthetist provider in New London, CT (NPI 1841558897).
Provider details
- NPI number
- 1841558897
- Entity type
- Individual
- Primary specialty
- Certified Registered Nurse AnesthetistPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- DNP
- Sex
- Female
- Sole proprietor
- Yes
- License
- 90139 (CT)
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
14 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
36 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) |
|---|---|---|
| Anesthesia for Lens Surgery00142 | 23 | $75 |
| Anesthesia for Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731 | 13 | $75 |
Typical Medicare-allowed amounts for these services range $75–$75 (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.
Practice location
Mailing address
Additional practice locations (1)
- 1 Medical Center DrLebanon, NH 03756-1000Phone: (603) 650-5000Fax: (603) 640-1228
Registry dates
- Enumerated
- 2012-04-27
- Last updated
- 2026-03-11
- Certified
- 2026-03-11
Frequently asked questions
- What is Olga Marsillio's NPI number?
- Olga Marsillio's National Provider Identifier (NPI) is 1841558897, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Olga Marsillio's specialty?
- Olga Marsillio is listed in the NPPES registry with a primary specialty of Certified Registered Nurse Anesthetist (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Olga Marsillio located?
- Olga Marsillio's practice location on file with NPPES is 365 Montauk Ave, New London, CT 06320-4700.
- What is Olga Marsillio's phone number?
- The practice phone number listed in the NPPES registry for Olga Marsillio is (860) 442-0711.
- Does Olga Marsillio accept Medicare?
- Olga Marsillio is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Olga Marsillio's NPI active?
- Yes — Olga Marsillio's NPI (1841558897) is active in the NPPES registry as of the last update on 2026-03-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.