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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. JOHN TIMOTHY LYSACK MD
NPI 1255322897
Radiology - Diagnostic Radiology in Boston, MA

Active since November 02, 2005
55 FRUIT ST, GRB 2, BOSTON, MA 02114(617) 726-8320(617) 726-3077 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. John Timothy Lysack Md NPPES

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

DR. JOHN TIMOTHY LYSACK MD (NPI 1255322897) is an individual diagnostic radiology provider in Boston, Massachusetts, licensed in Massachusetts (224049) and active in the NPI registry since November 2005.

NPPES Registry Identity

NPI1255322897
Entity TypeIndividualMale
Primary Taxonomy2085R0202X
Provider Legal NameDR. JOHN TIMOTHY LYSACKCredential: MD
Location Address55 FRUIT ST, GRB 2Boston, MA 02114-2621
Mailing AddressPo Box 9142Charlestown, MA 02129-9142 · (617) 724-0287 · Fax (617) 726-2894
Phone(617) 726-8320
Fax(617) 726-3077
Sole ProprietorNo
Enumeration DateNovember 2, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1255322897 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0202X
License✔ Licensed in MA · 224049
Definition
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.
55 FRUIT ST, Boston, MA 02114
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Other Identifiers 3

Other478705MA · Tufts Health Plan
OtherJ29081MA · Bcbs Ma
Medicaid2106621MA

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 John Lysack's NPI number?

The NPI number for John Lysack is 1255322897. It was assigned to this individual provider in the NPPES registry on November 2, 2005.

Where is John Lysack located?

John Lysack practices at 55 Fruit St Grb 2, Boston, MA 02114. The listed phone number is (617) 726-8320.

What is John Lysack's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

When was this NPI record last updated?

The NPPES record for John Lysack was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 27 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.