MARY ELLEN KILLION PNP-BC
NPI 1477503498
Nurse Practitioner - Pediatrics in Boston, MA
About Mary Ellen Killion Pnp-bc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY ELLEN KILLION PNP-BC (NPI 1477503498) is an individual pediatrics provider in Boston, Massachusetts, licensed in Massachusetts (172394) and active in the NPI registry since May 2006. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mary Ellen Killion Pnp-bc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Mary Ellen Killion reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Boston, MA 02118
- Reassigned Medicare billing, Massachusetts enrollment
- 195 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02118 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BOSTON, MA 02118
BOSTON, MA 02118
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Mary Ellen Killion's NPI number?
The NPI number for Mary Ellen Killion is 1477503498. It was assigned to this individual provider in the NPPES registry on May 11, 2006.
Where is Mary Ellen Killion located?
Mary Ellen Killion practices at 840 Harrison Ave Fl 1, Boston, MA 02118. The listed phone number is (617) 414-4991.
What is Mary Ellen Killion's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Pediatrics, with taxonomy code 363LP0200X.
Is Mary Ellen Killion enrolled in Medicare?
Yes. Mary Ellen Killion is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Mary Ellen Killion's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Ellen Killion reassigns Medicare benefits to Child Health Foundation Of Boston, Inc. (Boston, MA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mary Ellen Killion's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Ellen Killion accept?
Health plans from WellSense Health Plan list Mary Ellen Killion as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Mary Ellen Killion was last updated on March 27, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Mary Ellen Killion, PNP-BC · NPI 1477503498
Pediatrics physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since May 11, 2006.
## Identity
- **NPI:** 1477503498 (Entity type: Individual)
- **Enumerated:** May 11, 2006
- **Primary specialty:** Nurse Practitioner - Pediatrics · taxonomy 363LP0200X
- **State license:** 172394 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 840 HARRISON AVE FL 1, Boston, MA 02118-2905
- **Phone:** (617) 414-4991 · **Fax:** (617) 414-4999
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Child Health Foundation Of Boston, Inc. (NPI 1619969920, Boston, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** March 27, 2024
- **Other identifiers:** Medicaid 110019451A (MA)
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Source: [NPI Profile](https://npiprofile.com/npi/1477503498) · Data from the CMS NPPES public registry.