Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. GILMORE NEIL O'NEILL MD
NPI 1285615716
Psychiatry & Neurology - Neurology in Boston, MA

Active since November 10, 2005
15 PARKMAN ST, WAC 835 NEUROLOGY ASSOCIATES, BOSTON, MA 02114(617) 726-5533 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Gilmore Neil O'neill Md NPPES

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

DR. GILMORE NEIL O'NEILL MD (NPI 1285615716) is an individual neurology provider in Boston, Massachusetts, licensed in Massachusetts (152840) and active in the NPI registry since November 2005.

NPPES Registry Identity

NPI1285615716
Entity TypeIndividualMale
Primary Taxonomy2084N0400X
Provider Legal NameDR. GILMORE NEIL O'NEILLCredential: MD
Location Address15 PARKMAN ST, WAC 835 NEUROLOGY ASSOCIATESBoston, MA 02114-3117
Mailing AddressPo Box 9142, Mass General Physician OrganizationCharlestown, MA 02129-9142 · (617) 724-0287 · Fax (617) 726-2894
Sole ProprietorNo
Enumeration DateNovember 10, 2005
Last NPPES UpdateJuly 13, 2026
NPI 1285615716 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyPsychiatry & Neurology · NeurologyAllopathic & Osteopathic Physicians
Taxonomy Code2084N0400X
License Licensed in MA · 152840
Definition

A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.

15 PARKMAN ST, Boston, MA 02114

Other Identifiers 3

OtherJ18136MA · Bcbs Ma
Medicaid3170331MA
Other152840MA · Tufts Health Plan

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.

Nurse Practitioner (Adult Health)
15 PARKMAN ST, WAC 440
BOSTON, MA 02114
Physical Therapist
15 PARKMAN ST
BOSTON, MA 02114
Psychiatry & Neurology (Geriatric Psychiatry)
15 PARKMAN ST, PSYCHIATRY OUTPATIENT DEPARTMENT WAC 812
BOSTON, MA 02114
Physical Therapist (Neurology)
15 PARKMAN ST, ROOM 134
BOSTON, MA 02114
Physical Therapist
15 PARKMAN ST
BOSTON, MA 02114
Physical Therapist
15 PARKMAN ST, WACC 134
BOSTON, MA 02114
Physical Therapist
15 PARKMAN ST
BOSTON, MA 02114
Psychiatry & Neurology (Psychiatry)
15 PARKMAN ST, WAC 8 PSYCHIATRY OUTPATIENT DEPARTMENT
BOSTON, MA 02114

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 Gilmore O'neill's NPI number?

The NPI number for Gilmore O'neill is 1285615716. It was assigned to this individual provider in the NPPES registry on November 10, 2005.

Where is Gilmore O'neill located?

Gilmore O'neill practices at 15 Parkman St Wac 835 Neurology Associates, Boston, MA 02114. The listed phone number is (617) 726-5533.

What is Gilmore O'neill's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.

When was this NPI record last updated?

The NPPES record for Gilmore O'neill was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.