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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.

PETER GALLAGHER MD
NPI 1174517841
Psychiatry & Neurology - Psychiatry in Merrillville, IN

Active since September 08, 2005
8555 TAFT ST, MERRILLVILLE, IN 46410(219) 769-4005(219) 769-2508 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Peter Gallagher Md NPPES

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

PETER GALLAGHER MD (NPI 1174517841) is an individual psychiatry provider in Merrillville, Indiana, licensed in Indiana (01059467A) and active in the NPI registry since September 2005.

NPPES Registry Identity

NPI1174517841
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NamePETER GALLAGHERCredential: MD
Location Address8555 TAFT STMerrillville, IN 46410-6123
Mailing Address8400 Louisiana StMerrillville, IN 46410-6385 · (219) 757-1928 · Fax (219) 757-1950
Phone(219) 769-4005
Fax(219) 769-2508
Sole ProprietorNo
Enumeration DateSeptember 8, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1174517841 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in IN · 01059467A
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
8555 TAFT ST, Merrillville, IN 46410
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Other Identifiers 1

Other000000342636IN · Anthem Bc/bs

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.

MARY SULLIVAN BLS
Counselor (Mental Health)
8555 TAFT ST
MERRILLVILLE, IN 46410
Lake County (219) 769-4005
MONIKA MARIE SEGALLY
Counselor
8555 TAFT ST
MERRILLVILLE, IN 46410
Lake County (219) 769-4005
MELISSA SANCHEZ BA
Counselor
8555 TAFT ST
MERRILLVILLE, IN 46410
Lake County (219) 769-4005
ABEL MARTINEZ BA
Counselor
8555 TAFT ST
MERRILLVILLE, IN 46410
Lake County (219) 769-4005
SHIRLEY H RAINFORD BA
Counselor
8555 TAFT ST
MERRILLVILLE, IN 46410
Lake County (219) 769-4005
MS. CHRISTINE M JUDA
Registered Nurse
8555 TAFT ST
MERRILLVILLE, IN 46410
Lake County (219) 937-3300
CRYSTAL KOMACSAR LCAC
Counselor (Addiction (Substance Use Disorder))
8555 TAFT ST
MERRILLVILLE, IN 46410
Lake County (219) 769-4005
BREYAUNA SPENCER
Psychiatry & Neurology (Psychiatry)
8555 TAFT ST
MERRILLVILLE, IN 46410
Lake County (313) 346-5235

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 Peter Gallagher's NPI number?

The NPI number for Peter Gallagher is 1174517841. It was assigned to this individual provider in the NPPES registry on September 8, 2005.

Where is Peter Gallagher located?

Peter Gallagher practices at 8555 Taft St, Merrillville, IN 46410. The listed phone number is (219) 769-4005.

What is Peter Gallagher's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

When was this NPI record last updated?

The NPPES record for Peter Gallagher 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 31 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.