Mary Ellen Davis
NPI 1215917919 · Nurse Practitioner · Lewiston, ME
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Ellen Davis is a Nurse Practitioner provider in Lewiston, ME (NPI 1215917919).
Provider details
- NPI number
- 1215917919
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- No
- License
- R026808 (ME)
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 tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
391 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 277 | $80 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 48 | $109 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 30 | $54 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 24 | $119 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 12 | $14 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 114 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 329 | 98 |
| Atorvastatin Calcium | 281 | 82 |
| Rosuvastatin Calcium | 264 | 79 |
| Levothyroxine Sodium | 252 | 75 |
| Losartan Potassium | 237 | 77 |
| Omeprazole | 234 | 82 |
| Lisinopril |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-01-19
- Last updated
- 2010-09-20
Frequently asked questions
- What is Mary Ellen Davis's NPI number?
- Mary Ellen Davis's National Provider Identifier (NPI) is 1215917919, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Ellen Davis's specialty?
- Mary Ellen Davis is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Ellen Davis located?
- Mary Ellen Davis's practice location on file with NPPES is 12 High St, Lewiston, ME 04240-7634.
- What is Mary Ellen Davis's phone number?
- The practice phone number listed in the NPPES registry for Mary Ellen Davis is (207) 795-5700.
- Does Mary Ellen Davis accept Medicare?
- Mary Ellen Davis 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 Davis's NPI active?
- Yes — Mary Ellen Davis's NPI (1215917919) is active in the NPPES registry as of the last update on 2010-09-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.