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

Mary Darby, RN

Individual provider Psychiatric/Mental Health Registered Nurse · NPI 1417659913

Mary Darby, RN is a Psychiatric/Mental Health Registered Nurse in Lexington, Massachusetts. Practices as a sole proprietor. Licensed in Massachusetts.

Licensed in
MA
In the registry since
2023
What do these letters mean?
RN — Registered Nurse
A licensed nurse who completed a nursing degree and passed the NCLEX-RN examination.

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Practice location Address checks out

125 Hartwell Ave
Lexington, MA 02421-3100
Phone: (781) 861-0890
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatric/Mental Health Registered Nurse (primary) Taxonomy 163WP0808X · Licence RN2326271 (MA)

Record details

NPI number1417659913
Entity typeIndividual (Type 1)
GenderFemale
Credentials RN
Sole proprietorYes
NPI enumeratedMarch 20, 2023
Last updated in NPPESMarch 20, 2023
Certification dateMarch 17, 2023
Mailing address125 Hartwell Ave, Lexington, MA 02421

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