Mary Davis, MD
NPI 1346261831 · Psychiatry Physician · Lancaster, PA
Enrolled with Medicare as Order and Referring Only - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Davis, MD is a Psychiatry Physician provider in Lancaster, PA (NPI 1346261831).
Provider details
- NPI number
- 1346261831
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- MD054851L (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 17 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Alprazolam | 40 |
| Diazepam | 36 |
| Bupropion Hclbrand: Bupropion Xl | 28 |
| Hydromorphone Hcl | 27 |
| Buspirone Hcl | 26 |
| Clonazepam | 23 |
| Aripiprazole | 23 |
| Lorazepam | 20 |
| Fluoxetine Hcl | 19 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-21
- Last updated
- 2025-09-11
Frequently asked questions
- What is Mary Davis's NPI number?
- Mary Davis's National Provider Identifier (NPI) is 1346261831, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Davis's specialty?
- Mary Davis is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Davis located?
- Mary Davis's practice location on file with NPPES is 822 Marietta Ave, Lancaster, PA 17603-3239.
- What is Mary Davis's phone number?
- The practice phone number listed in the NPPES registry for Mary Davis is (717) 392-7062.
- Does Mary Davis accept Medicare?
- Mary 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 Davis's NPI active?
- Yes — Mary Davis's NPI (1346261831) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.