Marianne Nellis, MD
NPI 1295175230 · Pediatric Critical Care Medicine Physician · New York, NY
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marianne Nellis, MD is a Pediatric Critical Care Medicine Physician provider in New York, NY (NPI 1295175230).
Provider details
- NPI number
- 1295175230
- Entity type
- Individual
- Primary specialty
- Pediatric Critical Care Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 234862 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
12 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
- 2013-07-03
- Last updated
- 2013-07-03
Frequently asked questions
- What is Marianne Nellis's NPI number?
- Marianne Nellis's National Provider Identifier (NPI) is 1295175230, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marianne Nellis's specialty?
- Marianne Nellis is listed in the NPPES registry with a primary specialty of Pediatric Critical Care Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Marianne Nellis located?
- Marianne Nellis's practice location on file with NPPES is 525 E 68th St, New York, NY 10065-4870.
- What is Marianne Nellis's phone number?
- The practice phone number listed in the NPPES registry for Marianne Nellis is (212) 746-3056.
- Does Marianne Nellis accept Medicare?
- Marianne Nellis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marianne Nellis's NPI active?
- Yes — Marianne Nellis's NPI (1295175230) is active in the NPPES registry as of the last update on 2013-07-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.