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MR. HARRISON DREW KLEIN
NPI 1235995333
Nurse Practitioner - Psychiatric/Mental Health in Boston, MA

Active since February 26, 2024

NPPES record last updated: May 15, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: May 15, 2026, Nov 13, 2025, Oct 10, 2025 (3 updates tracked since 2025).

About Mr. Harrison Drew Klein NPPES

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

MR. HARRISON DREW KLEIN (NPI 1235995333) is an individual psychiatric/mental health provider in Boston, Massachusetts, licensed in Massachusetts (RN2332990) and active in the NPI registry since February 2024.

NPPES Registry Identity

NPI1235995333
Entity TypeIndividualMale
Primary Taxonomy363LP0808X
Provider Legal NameMR. HARRISON DREW KLEIN
Location Address55 FRUIT STBoston, MA 02114-2696
Mailing Address55 Fruit StBoston, MA 02114-2696 · (617) 726-2000
Phone(617) 726-2000
Sole ProprietorYes
Enumeration DateFebruary 26, 2024
Last NPPES UpdateMay 15, 20263 updates tracked since enumeration
NPPES CertifiedMay 15, 2026
✔ NPI 1235995333 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0808X
License✔ Licensed in MA · RN2332990
55 FRUIT ST, Boston, MA 02114
Open in Google Maps ↗

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

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.

STUTI GIRISH SHROFF MD, MBBS
Pathology (Anatomic Pathology)
55 FRUIT ST
BOSTON, MA 02114
Suffolk County (617) 726-2971
NANCY WANG M.D.
Internal Medicine (Hematology & Oncology)
55 FRUIT ST
BOSTON, MA 02114
Suffolk County (017) 724-4000
DR. DUSAN HANIDZIAR M.D., PH.D.
Anesthesiology
55 FRUIT ST, GRAY-BIGELOW 444
BOSTON, MA 02114
Suffolk County (617) 726-3030
JOHN JOSEPH DANKO DO
Physical Medicine & Rehabilitation
55 FRUIT ST
BOSTON, MA 02114
Suffolk County (617) 726-2000
DR. MICHAEL ANDREW LOBRITZ M.D, PH.D.
Internal Medicine (Infectious Disease)
55 FRUIT ST, DIVISION OF INFECTIOUS DISEASE, GRJ-504
BOSTON, MA 02114
Suffolk County (617) 724-9248
MS. KELLY ELISHA TRECARTIN NP
Nurse Practitioner (Acute Care)
55 FRUIT ST, BIGALOW 852 F
BOSTON, MA 02114
Suffolk County (617) 726-7400
JAMIE MARIE ALLEN NP
Nurse Practitioner
55 FRUIT ST
BOSTON, MA 02114
Suffolk County (617) 724-4410
DR. DHAVAL SANJEEV KOLTE M.B.B.S., PH.D.
Internal Medicine (Cardiovascular Disease)
55 FRUIT ST
BOSTON, MA 02114
Suffolk County (617) 643-3238

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 Harrison Klein's NPI number?

The NPI number for Harrison Klein is 1235995333. It was assigned to this individual provider in the NPPES registry on February 26, 2024.

Where is Harrison Klein located?

Harrison Klein practices at 55 Fruit St, Boston, MA 02114. The listed phone number is (617) 726-2000.

What is Harrison Klein's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

When was this NPI record last updated?

The NPPES record for Harrison Klein was last updated on May 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.