Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Mary Ellen Davis

Individual provider Nurse Practitioner · NPI 1215917919

Mary Ellen Davis is a Nurse Practitioner in Lewiston, Maine. Qualified in 1996, 30 years ago. Practices with Central Maine Medical Center, a 347-clinician group and accepts Medicare assignment. Licensed in Maine.

Years since qualifying
30
Licensed in
ME
In the registry since
2006
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Practice location Address checks out

12 High St Ste 400
Lewiston, ME 04240-7634 Not confirmed with CMS for 16 years — call before visiting
Phone: (207) 795-5700
Fax: (207) 795-5727
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nurse Practitioner (primary) Taxonomy 363L00000X · Licence R026808 (ME)

Record details

NPI number1215917919
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedJanuary 19, 2006
Last updated in NPPESSeptember 20, 2010

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 1996 (30 years in practice)
Group practice Central Maine Medical Center — 347 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients161
Services billed 411 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Central Maine Medical Center

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 347 clinicians in the practice; 12 are shown here.

Other providers in Lewiston