1. Home
  2. Directory
  3. Texas
  4. Cedar Park
  5. Psychiatry Neurology
  6. NPI Profile
Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

WATER OAK PSYCHIATRY PLLC
NPI 1134034747
Psychiatry & Neurology - Child & Adolescent Psychiatry in Cedar Park, TX

Active since August 18, 2026
507 DENALI PASS STE 101, CEDAR PARK, TX 78613(737) 843-4210 Get Directions Write a Review

NPPES record added: August 18, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

About Water Oak Psychiatry Pllc NPPES

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

WATER OAK PSYCHIATRY PLLC (NPI 1134034747) is a healthcare organization registered as a child & adolescent psychiatry in Cedar Park, Texas and active in the NPI registry since August 2026. The organization lists Brian Massey, Member, as its authorized official.

NPPES Registry Identity

NPI1134034747
Entity TypeOrganization
Primary Taxonomy2084P0804X
Legal Business NameWATER OAK PSYCHIATRY PLLC
Location Address507 DENALI PASS STE 101Cedar Park, TX 78613-7979
Mailing Address801 S Highway 183 Ste 266Leander, TX 78641-1991
Phone(737) 843-4210
Organization SubpartNo
Authorized OfficialBrian MasseyMember · (737) 843-4210
Enumeration DateAugust 18, 2026
NPPES CertifiedAugust 18, 2026
✔ NPI 1134034747 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · Child & Adolescent PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0804X
Definition
Child & Adolescent Psychiatry is a subspecialty of psychiatry with additional skills and training in the diagnosis and treatment of developmental, behavioral, emotional, and mental disorders of childhood and adolescence.
507 DENALI PASS STE 101, Cedar Park, TX 78613
Open in Google Maps ↗

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

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.

MR. ETHAN MATTHEW PATTERSON M.ED, LPC-ASSOCIATE
Counselor (Professional)
507 DENALI PASS STE 101
CEDAR PARK, TX 78613
Williamson County (512) 434-0716
LYDIA A ROYER LCSW
Social Worker
507 DENALI PASS STE 101
CEDAR PARK, TX 78613
Williamson County (512) 253-7214

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 Water Oak Psychiatry PLLC's NPI number?

The NPI number for Water Oak Psychiatry PLLC is 1134034747. It was assigned to this organization in the NPPES registry on August 18, 2026.

Where is Water Oak Psychiatry PLLC located?

Water Oak Psychiatry PLLC is located at 507 Denali Pass Ste 101, Cedar Park, TX 78613. The listed phone number is (737) 843-4210.

What is Water Oak Psychiatry PLLC's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Child & Adolescent Psychiatry, with taxonomy code 2084P0804X.

When was this NPI record last updated?

The NPPES record for Water Oak Psychiatry PLLC was last updated on August 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.