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

MS. Mary Lynn Johnston, APRN

Individual provider Adult Health Nurse Practitioner · NPI 1841424801

MS. Mary Lynn Johnston, APRN is an Adult Health Nurse Practitioner in New Haven, Connecticut. Licensed in Connecticut. Registered with an NPI since 2009.

Licensed in
CT
In the registry since
2009
What do these letters mean?
APRN — Advanced Practice Registered Nurse
The umbrella licence covering nurse practitioners, midwives, anaesthetists and clinical nurse specialists.

See every abbreviation used in this directory →

Practice location Address checks out

800 Howard Ave Ypb 4th Fl
New Haven, CT 06519-1369
Phone: (203) 785-4191
Fax: (203) 737-6014
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Adult Health Nurse Practitioner (primary) Taxonomy 363LA2200X · Licence 002311 (CT)

Record details

NPI number1841424801
Entity typeIndividual (Type 1)
GenderFemale
Credentials APRN
Sole proprietorNo
NPI enumeratedMay 6, 2009
Last updated in NPPESJanuary 23, 2013

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