Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Mary Helen Davis, MD

Individual provider Psychiatry Physician · NPI 1346261831

Mary Helen Davis, MD is a Psychiatry Physician in Lancaster, Pennsylvania. Practices as a sole proprietor. Licensed in Pennsylvania.

Licensed in
PA
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

822 Marietta Ave Ste 31
Lancaster, PA 17603-3239
Phone: (717) 392-7062
Fax: (717) 392-5495
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence MD054851L (PA)
Child & Adolescent Psychiatry Physician Taxonomy 2084P0804X · Licence MD054851L (PA)

Record details

NPI number1346261831
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 21, 2006
Last updated in NPPESSeptember 11, 2025

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