KATHERINE KIM ROSSITER FNP
NPI 1386214716
Nurse Practitioner - Family in Portland, ME
About Katherine Kim Rossiter Fnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KATHERINE KIM ROSSITER FNP (NPI 1386214716) is an individual family provider in Portland, Maine, licensed in Maine (CNP201146) and active in the NPI registry since June 2021. She is enrolled in Medicare PECOS, is affiliated with Northern Light Health, and is a graduate of Other (2020).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Katherine Kim Rossiter Fnp is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Katherine Rossiter reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Portland, ME 04102
- Reassigned Medicare billing, Maine enrollment
- 322 clinicians in this Medicare group
Portland, ME 04101
- Reassigned Medicare billing, Maine enrollment
- Medicare enrollment name: Portland Gastroenterology Associates PA
- 34 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Northern Light Health
Acute Care Hospitals · Portland, MEPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 04102 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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 Katherine Rossiter's NPI number?
The NPI number for Katherine Rossiter is 1386214716. It was assigned to this individual provider in the NPPES registry on June 28, 2021.
Where is Katherine Rossiter located?
Katherine Rossiter practices at 195 Fore River Pkwy Ste 250, Portland, ME 04102. The listed phone number is (207) 553-6800.
What is Katherine Rossiter's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Katherine Rossiter enrolled in Medicare?
Yes. Katherine Rossiter is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Katherine Rossiter's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Katherine Rossiter reassigns Medicare benefits to 2 organizations: Mercy Hospital (Portland, ME) and Portland Gastroenterology Associates P.A. (Portland, ME). Each 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 Katherine Rossiter's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Katherine Rossiter accept?
Health plans from Anthem Blue Cross and Blue Shield and Taro Health list Katherine Rossiter 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.
Is Katherine Rossiter affiliated with any hospitals?
According to CMS data, Katherine Rossiter is affiliated with Northern Light Health.
When was this NPI record last updated?
The NPPES record for Katherine Rossiter was last updated on September 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 30 days 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.
# Katherine Kim Rossiter, FNP · NPI 1386214716
Family physician in Portland, Maine. Individual provider, active in the CMS NPPES registry since June 28, 2021.
## Identity
- **NPI:** 1386214716 (Entity type: Individual)
- **Enumerated:** June 28, 2021
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** CNP201146 (Maine)
- **Sole proprietor:** No
## Practice location
- **Address:** 195 FORE RIVER PKWY STE 250, Portland, ME 04102-2784
- **Phone:** (207) 553-6800 · **Fax:** (207) 553-6810
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Mercy Hospital (NPI 1427313048, Portland, ME); Portland Gastroenterology Associates P.A. (NPI 1508087289, Portland, ME) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2020
## Record status
- **NPPES last updated:** September 24, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1386214716) · Data from the CMS NPPES public registry.