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

MR. GREGORY GANNON LCSW
NPI 1306120530
Social Worker - Clinical in Tacoma, WA

Active since October 06, 2011
MADIGAN ARMY MEDICAL CENTER 9040 JACKSON AVE, TACOMA, WA 98431(919) 428-4538 Get Directions Write a Review

NPPES record last updated: July 17, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jul 17, 2026, Dec 8, 2023, Dec 3, 2018 (3 updates tracked since 2018).

About Mr. Gregory Gannon Lcsw NPPES

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

MR. GREGORY GANNON LCSW (NPI 1306120530) is an individual clinical provider in Tacoma, Washington, licensed in New York (083728-1) and active in the NPI registry since October 2011.

NPPES Registry Identity

NPI1306120530
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameMR. GREGORY GANNONCredential: LCSW
Location AddressMADIGAN ARMY MEDICAL CENTER 9040 JACKSON AVETacoma, WA 98431-8404
Mailing AddressMadigan Army Medical Center 9040 Jackson AveTacoma, WA 98431-8404 · (919) 428-4538
Sole ProprietorNo
Enumeration DateOctober 6, 2011
Last NPPES UpdateJuly 17, 20263 updates tracked since enumeration
NPPES CertifiedJuly 17, 2026
NPI 1306120530 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
Licenses Licensed in NY · 083728-1 Licensed in WA · SWI.LW.70069451
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
Also ListedSocial WorkerTaxonomy 104100000X · License 082205-1 (NY)
MADIGAN ARMY MEDICAL CENTER 9040 JACKSON AVE, Tacoma, WA 98431

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.

Social Worker (Clinical)
MADIGAN ARMY MEDICAL CENTER 9040 JACKSON AVE
TACOMA, WA 98431
Psychologist (Clinical)
MADIGAN ARMY MEDICAL CENTER 9040 JACKSON AVE
TACOMA, WA 98431
Counselor (Mental Health)
MADIGAN ARMY MEDICAL CENTER 9040 JACKSON AVE
TACOMA, WA 98431
Registered Nurse (Case Management)
MADIGAN ARMY MEDICAL CENTER 9040 JACKSON AVE
TACOMA, WA 98431
Military Health Care Provider
MADIGAN ARMY MEDICAL CENTER 9040 JACKSON AVE
TACOMA, WA 98431
Physician Assistant (Medical)
MADIGAN ARMY MEDICAL CENTER 9040 JACKSON AVE
TACOMA, WA 98431
General Practice
MADIGAN ARMY MEDICAL CENTER 9040 JACKSON AVE
TACOMA, WA 98431
Emergency Medicine
MADIGAN ARMY MEDICAL CENTER 9040 JACKSON AVE
TACOMA, WA 98431

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 Gregory Gannon's NPI number?

The NPI number for Gregory Gannon is 1306120530. It was assigned to this individual provider in the NPPES registry on October 6, 2011.

Where is Gregory Gannon located?

Gregory Gannon practices at Madigan Army Medical Center 9040 Jackson Ave, Tacoma, WA 98431. The listed phone number is (919) 428-4538.

What is Gregory Gannon's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

When was this NPI record last updated?

The NPPES record for Gregory Gannon was last updated on July 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 37 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.