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WILLIAM GARDNER BARKER LAC
NPI 1174469589
Counselor in Tucson, AZ

Active since April 27, 2026
4888 N STONE AVE UNIT 120, TUCSON, AZ 85704(520) 670-3909(520) 309-2560 Get Directions Write a Review

NPPES record last updated: May 19, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: May 19, 2026, Apr 27, 2026 (2 updates tracked since 2026).

About William Gardner Barker Lac NPPES

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

WILLIAM GARDNER BARKER LAC (NPI 1174469589) is an individual counselor in Tucson, Arizona and active in the NPI registry since April 2026.

NPPES Registry Identity

NPI1174469589
Entity TypeIndividualMale
Primary Taxonomy101Y00000X
Provider Legal NameWILLIAM GARDNER BARKERCredential: LAC
Location Address4888 N STONE AVE UNIT 120Tucson, AZ 85704-5749
Mailing Address839 W Congress StTucson, AZ 85745-2819 · (520) 670-3909 · Fax (520) 309-2560
Phone(520) 670-3909
Fax(520) 309-2560
Sole ProprietorNo
Enumeration DateApril 27, 2026
Last NPPES UpdateMay 19, 20262 updates tracked since enumeration
NPPES CertifiedMay 19, 2026
✔ NPI 1174469589 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselorBehavioral Health & Social Service Providers
Taxonomy Code101Y00000X
Definition
A provider who is trained and educated in the performance of behavior health services through interpersonal communications and analysis. Training and education at the specialty level usually requires a master's degree and clinical experience and supervision for licensure or certification.
4888 N STONE AVE UNIT 120, Tucson, AZ 85704
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Other Providers at the Same Location NPPES 4

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

EL RIO SANTA CRUZ NEIGHBORHOOD HEALTH CENTER INC
Clinic/Center (Federally Qualified Health Center (FQHC))
4888 N STONE AVE UNIT 120
TUCSON, AZ 85704
Pima County (520) 670-3909
DR. JESSICA LIN LINSTROM MD
Psychiatry & Neurology (Psychiatry)
4888 N STONE AVE UNIT 120
TUCSON, AZ 85704
Pima County (520) 670-3909
DR. ZOE JORDAN DILL CPNP
Nurse Practitioner (Pediatrics)
4888 N STONE AVE UNIT 120
TUCSON, AZ 85704
Pima County (520) 670-3909
TANNER DAHL DMD
Dentist (Pediatric Dentistry)
4888 N STONE AVE UNIT 120
TUCSON, AZ 85704
Pima County (520) 670-3909

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 William Barker's NPI number?

The NPI number for William Barker is 1174469589. It was assigned to this individual provider in the NPPES registry on April 27, 2026.

Where is William Barker located?

William Barker practices at 4888 N Stone Ave Unit 120, Tucson, AZ 85704. The listed phone number is (520) 670-3909.

What is William Barker's specialty?

The primary specialty registered for this NPI is Counselor with taxonomy code 101Y00000X.

When was this NPI record last updated?

The NPPES record for William Barker was last updated on May 19, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.