MARY ELLEN DAVIS
NPI 1215917919
Nurse Practitioner in Lewiston, ME
About Mary Ellen Davis NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY ELLEN DAVIS (NPI 1215917919) is an individual nurse practitioner in Lewiston, Maine, licensed in Maine (R026808) and active in the NPI registry since January 2006. She is enrolled in Medicare PECOS, is affiliated with Central Maine Medical Center, and is a graduate of Other (1996).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
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
Mary Ellen Davis 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 Reassignment
Medicare enrollment records show Mary Ellen Davis reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Lewiston, ME 04240
- Reassigned Medicare billing, Maine enrollment
- 920 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.
Areas of Expertise CMS Part B claims 4
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Central Maine Medical Center
Acute Care Hospitals · Lewiston, MESt Mary's Regional Medical Center
Acute Care Hospitals · Lewiston, MEPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 04240 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.
Referred Medical Equipment & Supplies CMS DME claims 3
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Davis's NPI number?
The NPI number for Mary Ellen Davis is 1215917919. It was assigned to this individual provider in the NPPES registry on January 19, 2006.
Where is Mary Ellen Davis located?
Mary Ellen Davis practices at 12 High St Ste 400, Lewiston, ME 04240. The listed phone number is (207) 795-5700.
What is Mary Ellen Davis's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Mary Ellen Davis enrolled in Medicare?
Yes. Mary Ellen Davis 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 organization bills Medicare for Mary Ellen Davis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Ellen Davis reassigns Medicare benefits to Central Maine Medical Center (Lewiston, ME). 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 Davis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Ellen Davis accept?
Health plans from Anthem Blue Cross and Blue Shield and Taro Health list Mary Ellen Davis 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 Mary Ellen Davis affiliated with any hospitals?
According to CMS data, Mary Ellen Davis is affiliated with Central Maine Medical Center and St Mary's Regional Medical Center.
When was this NPI record last updated?
The NPPES record for Mary Ellen Davis was last updated on September 20, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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 Davis · NPI 1215917919
Nurse Practitioner physician in Lewiston, Maine. Individual provider, active in the CMS NPPES registry since January 19, 2006.
## Identity
- **NPI:** 1215917919 (Entity type: Individual)
- **Enumerated:** January 19, 2006
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** R026808 (Maine)
- **Sole proprietor:** No
## Practice location
- **Address:** 12 HIGH ST, STE 400, Lewiston, ME 04240-7634
- **Phone:** (207) 795-5700 · **Fax:** (207) 795-5727
## 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:** Central Maine Medical Center (NPI 1689653487, Lewiston, ME), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1996
## Record status
- **NPPES last updated:** September 20, 2010
- **Other identifiers:** Medicare UPIN S33585 (ME); Medicare ID-Type Unspecified NP0704 (ME)
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Source: [NPI Profile](https://npiprofile.com/npi/1215917919) · Data from the CMS NPPES public registry.