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Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

GIANNA MARIE KNAPP
NPI 1902713100
Counselor - Mental Health in Roxbury, MA

Active since August 25, 2026
520 DUDLEY ST, ROXBURY, MA 02119(617) 445-6655 Get Directions Write a Review

NPPES record added: August 25, 2026. Verified against the NPPES registry weekly; last sync: August 30, 2026.

About Gianna Marie Knapp NPPES

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

GIANNA MARIE KNAPP (NPI 1902713100) is an individual mental health provider in Roxbury, Massachusetts and active in the NPI registry since August 2026.

NPPES Registry Identity

NPI1902713100
Entity TypeIndividualFemale
Primary Taxonomy101YM0800X
Provider Legal NameGIANNA MARIE KNAPP
Location Address520 DUDLEY STRoxbury, MA 02119-2769
Mailing Address520 Dudley StRoxbury, MA 02119-2769 · (617) 445-6655
Phone(617) 445-6655
Sole ProprietorYes
Enumeration DateAugust 25, 2026
NPPES CertifiedAugust 25, 2026
✔ NPI 1902713100 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers
Taxonomy Code101YM0800X
520 DUDLEY ST, Roxbury, MA 02119
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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. EBONEE TROUP BS
Social Worker (Clinical)
520 DUDLEY ST
ROXBURY, MA 02119
Suffolk County (617) 690-9701
LAKEYSHA EGLESTON
Case Manager/Care Coordinator
520 DUDLEY ST
ROXBURY, MA 02119
Suffolk County (617) 989-9499
AJA JAMES-HUGHES
Community Health Worker
520 DUDLEY ST
ROXBURY, MA 02119
Suffolk County (774) 297-7277
MARISA MEDEIROS DASILVA MSW
Counselor (Mental Health)
520 DUDLEY ST
ROXBURY, MA 02119
Suffolk County (978) 505-6286
DOUGLAS BENTON
Counselor (Mental Health)
520 DUDLEY ST
ROXBURY, MA 02119
Suffolk County (617) 602-7869
UJU ILECHUKWU
Counselor (Mental Health)
520 DUDLEY ST
ROXBURY, MA 02119
Suffolk County (617) 989-9499
AJANAY HUGHES PEARSON
Counselor (Mental Health)
520 DUDLEY ST
BOSTON, MA 02119
Suffolk County (857) 399-3390
YUKA HAYASHI
Student in an Organized Health Care Education/Training Program
520 DUDLEY ST
ROXBURY, MA 02119
Suffolk County (857) 919-7922

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 Gianna Knapp's NPI number?

The NPI number for Gianna Knapp is 1902713100. It was assigned to this individual provider in the NPPES registry on August 25, 2026.

Where is Gianna Knapp located?

Gianna Knapp practices at 520 Dudley St, Roxbury, MA 02119. The listed phone number is (617) 445-6655.

What is Gianna Knapp's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.

When was this NPI record last updated?

The NPPES record for Gianna Knapp was last updated on August 25, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 days 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.