Mary Ellen Killion, PNP-BC
NPI 1477503498 · Pediatric Nurse Practitioner · Boston, MA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Ellen Killion, PNP-BC is a Pediatric Nurse Practitioner provider in Boston, MA (NPI 1477503498).
Provider details
- NPI number
- 1477503498
- Entity type
- Individual
- Primary specialty
- Pediatric Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PNP-BC
- Sex
- Female
- Sole proprietor
- No
- License
- 172394 (MA)
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 tenure38% of score
20 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
- 2006-05-11
- Last updated
- 2024-03-27
- Certified
- 2024-03-27
Frequently asked questions
- What is Mary Ellen Killion's NPI number?
- Mary Ellen Killion's National Provider Identifier (NPI) is 1477503498, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Ellen Killion's specialty?
- Mary Ellen Killion is listed in the NPPES registry with a primary specialty of Pediatric Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Ellen Killion located?
- Mary Ellen Killion's practice location on file with NPPES is 840 Harrison Ave Fl 1, Boston, MA 02118-2905.
- What is Mary Ellen Killion's phone number?
- The practice phone number listed in the NPPES registry for Mary Ellen Killion is (617) 414-4991.
- Does Mary Ellen Killion accept Medicare?
- Mary Ellen Killion is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Ellen Killion's NPI active?
- Yes — Mary Ellen Killion's NPI (1477503498) is active in the NPPES registry as of the last update on 2024-03-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.