Marissa Parrillo, DO
NPI 1013412659 · Pediatric Critical Care Medicine Physician · Worcester, MA
Enrolled with Medicare as Practitioner - Critical Care (intensivists) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marissa Parrillo, DO is a Pediatric Critical Care Medicine Physician provider in Worcester, MA (NPI 1013412659).
Provider details
- NPI number
- 1013412659
- Entity type
- Individual
- Primary specialty
- Pediatric Critical Care Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- 287119 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
8 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2018-03-27
- Last updated
- 2025-09-17
- Certified
- 2025-09-17
Frequently asked questions
- What is Marissa Parrillo's NPI number?
- Marissa Parrillo's National Provider Identifier (NPI) is 1013412659, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marissa Parrillo's specialty?
- Marissa Parrillo is listed in the NPPES registry with a primary specialty of Pediatric Critical Care Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Marissa Parrillo located?
- Marissa Parrillo's practice location on file with NPPES is 55 Lake Ave N, Worcester, MA 01655-0002.
- What is Marissa Parrillo's phone number?
- The practice phone number listed in the NPPES registry for Marissa Parrillo is (774) 442-2164.
- Does Marissa Parrillo accept Medicare?
- Marissa Parrillo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marissa Parrillo's NPI active?
- Yes — Marissa Parrillo's NPI (1013412659) is active in the NPPES registry as of the last update on 2025-09-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.