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MS. MARY LYNN JOHNSTON APRN
NPI 1841424801
Nurse Practitioner - Adult Health in New Haven, CT

Active since May 06, 2009
800 HOWARD AVE, YPB 4TH FLOOR, NEW HAVEN, CT 06519(203) 785-4191(203) 737-6014 Get Directions Write a Review

NPPES record last updated: January 23, 2013. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Ms. Mary Lynn Johnston Aprn NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MS. MARY LYNN JOHNSTON APRN (NPI 1841424801) is an individual adult health provider in New Haven, Connecticut, licensed in Connecticut (002311) and active in the NPI registry since May 2009.

NPPES Registry Identity

NPI1841424801
Entity TypeIndividualFemale
Primary Taxonomy363LA2200X
Provider Legal NameMS. MARY LYNN JOHNSTONCredential: APRN
Location Address800 HOWARD AVE, YPB 4TH FLOORNew Haven, CT 06519-1369
Mailing Address300 George St, 6th FloorNew Haven, CT 06511-6624 · (203) 785-4216 · Fax (203) 737-6014
Phone(203) 785-4191
Fax(203) 737-6014
Sole ProprietorNo
Enumeration DateMay 6, 2009
Last NPPES UpdateJanuary 23, 2013
✔ NPI 1841424801 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Adult HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LA2200X
License✔ Licensed in CT · 002311
800 HOWARD AVE, New Haven, CT 06519
Open in Google Maps ↗

Other Identifiers 2

Medicare PIND400003306CT
Medicaid008003990CT

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MS. PAULA M. TORTORICI-SCHEFF FNP
Nurse Practitioner (Family)
800 HOWARD AVE
NEW HAVEN, CT 06519
South Central Connecticut Planning Region (203) 688-4242
GERARD ANDREW BETRO MD
Surgery
800 HOWARD AVE, YALE PHYSICIANS BLDG
NEW HAVEN, CT 06519
South Central Connecticut Planning Region (203) 785-2140
ALEXA BLOOD APRN
Nurse Practitioner
800 HOWARD AVE
NEW HAVEN, CT 06519
South Central Connecticut Planning Region (203) 785-2565
MICHAEL DIGIOVANNA MD
Internal Medicine (Medical Oncology)
800 HOWARD AVE, YALE PHYSICIANS BUILDING - 2ND FLOOR
NEW HAVEN, CT 06519
South Central Connecticut Planning Region (203) 688-4191
HELENA TERESA CHMIELOWICZ APRN
Clinical Nurse Specialist (Gerontology)
800 HOWARD AVE
NEW HAVEN, CT 06519
South Central Connecticut Planning Region (203) 785-2140
DR. MARC LEWIS ROSEN MD
Physical Medicine & Rehabilitation
800 HOWARD AVE
NEW HAVEN, CT 06519
South Central Connecticut Planning Region (203) 785-2579
MICHELE ANNE GOYETTE -EWING PHD
Psychologist (Clinical Child & Adolescent)
800 HOWARD AVE, YALE PHYSICIANS BLDG
NEW HAVEN, CT 06519
South Central Connecticut Planning Region (203) 785-2140
UZMA USMAN MD
Psychiatry & Neurology (Neuromuscular Medicine)
800 HOWARD AVE
NEW HAVEN, CT 06519
South Central Connecticut Planning Region (999) 999-9999

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mary Johnston's NPI number?

The NPI number for Mary Johnston is 1841424801. It was assigned to this individual provider in the NPPES registry on May 6, 2009.

Where is Mary Johnston located?

Mary Johnston practices at 800 Howard Ave Ypb 4th Floor, New Haven, CT 06519. The listed phone number is (203) 785-4191.

What is Mary Johnston's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Adult Health, with taxonomy code 363LA2200X.

When was this NPI record last updated?

The NPPES record for Mary Johnston was last updated on January 23, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.