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LEO XAVIER CALLAHAN M.D.
NPI 1598955627
Otolaryngology in East Boston, MA

Active since July 25, 2007
79 MERIDIAN ST, EAST BOSTON, MA 02128(617) 407-7568 Get Directions Write a Review

NPPES record last updated: July 25, 2007. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Leo Xavier Callahan M.d. NPPES

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

LEO XAVIER CALLAHAN M.D. (NPI 1598955627) is an individual otolaryngology provider in East Boston, Massachusetts, licensed in Massachusetts (58717) and active in the NPI registry since July 2007.

NPPES Registry Identity

NPI1598955627
Entity TypeIndividualMale
Primary Taxonomy207Y00000X
Provider Legal NameLEO XAVIER CALLAHANCredential: M.D.
Location Address79 MERIDIAN STEast Boston, MA 02128-1959
Mailing Address172 Cowper StBoston, MA 02128-1578 · (617) 407-7568
Phone(617) 407-7568
Sole ProprietorNo
Enumeration DateJuly 25, 2007
✔ NPI 1598955627 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOtolaryngologyAllopathic & Osteopathic Physicians
Taxonomy Code207Y00000X
License✔ Licensed in MA · 58717
Definition
An otolaryngologist-head and neck surgeon provides comprehensive medical and surgical care for patients with diseases and disorders that affect the ears, nose, throat, the respiratory and upper alimentary systems and related structures of the head and neck. An otolaryngologist diagnoses and provides medical and/or surgical therapy or prevention of diseases, allergies, neoplasms, deformities, disorders and/or injuries of the ears, nose, sinuses, throat, respiratory and upper alimentary systems, face, jaws and the other head and neck systems. Head and neck oncology, facial plastic and reconstructive surgery and the treatment of disorders of hearing and voice are fundamental areas of expertise.
79 MERIDIAN ST, East Boston, MA 02128
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Other Providers at the Same Location NPPES 2

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

DR. MEHDI RAHMATPOUR LLC DMD
Dentist (General Practice)
79 MERIDIAN ST
EAST BOSTON, MA 02128
Suffolk County (617) 567-8882
EAST BOSTON FAMILY DENTAL CENTER
Dentist (General Practice)
79 MERIDIAN ST
EAST BOSTON, MA 02128
Suffolk County (617) 567-8882

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 Leo Xavier Callahan's NPI number?

The NPI number for Leo Xavier Callahan is 1598955627. It was assigned to this individual provider in the NPPES registry on July 25, 2007.

Where is Leo Xavier Callahan located?

Leo Xavier Callahan practices at 79 Meridian St, East Boston, MA 02128. The listed phone number is (617) 407-7568.

What is Leo Xavier Callahan's specialty?

The primary specialty registered for this NPI is Otolaryngology with taxonomy code 207Y00000X.

When was this NPI record last updated?

The NPPES record for Leo Xavier Callahan was last updated on July 25, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.