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NICOLAUS WILLIAMS PMHNP-BC
NPI 1881543841
Nurse Practitioner - Psychiatric/Mental Health in Austin, TX

Active since January 23, 2026
1600 W 38TH ST STE 318, AUSTIN, TX 78731(512) 203-3588(512) 957-0156 Get Directions Write a Review

NPPES record last updated: January 23, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Nicolaus Williams Pmhnp-bc NPPES

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

NICOLAUS WILLIAMS PMHNP-BC (NPI 1881543841) is an individual psychiatric/mental health provider in Austin, Texas, licensed in Texas (1216723) and active in the NPI registry since January 2026.

NPPES Registry Identity

NPI1881543841
Entity TypeIndividualMale
Primary Taxonomy363LP0808X
Provider Legal NameNICOLAUS WILLIAMSCredential: PMHNP-BC
Location Address1600 W 38TH ST STE 318Austin, TX 78731-6406
Mailing Address1600 W 38th St Ste 318Austin, TX 78731-6406 · (512) 203-3588 · Fax (512) 957-0156
Phone(512) 203-3588
Fax(512) 957-0156
Sole ProprietorNo
Enumeration DateJanuary 23, 2026
NPPES CertifiedJanuary 23, 2026
✔ NPI 1881543841 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0808X
License✔ Licensed in TX · 1216723
1600 W 38TH ST STE 318, Austin, TX 78731
Open in Google Maps ↗

Other Providers at the Same Location NPPES 8

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

MS. TRACY A. FIGLAN APRN
Nurse Practitioner (Psychiatric/Mental Health)
1600 W 38TH ST STE 318
AUSTIN, TX 78731
Travis County (512) 203-3588
DR. EMILY ASHLEY DNP, APRN, PMHNP-BC
Nurse Practitioner (Psychiatric/Mental Health)
1600 W 38TH ST STE 318
AUSTIN, TX 78731
Travis County (512) 203-3588
RYANN RATHBONE APRN PMHNP
Nurse Practitioner (Psychiatric/Mental Health)
1600 W 38TH ST STE 318
AUSTIN, TX 78731
Travis County (512) 203-3588
DINA DENISE BROWN PMHNP
Nurse Practitioner (Psychiatric/Mental Health)
1600 W 38TH ST STE 318
AUSTIN, TX 78731
Travis County (512) 203-3588
REBECCA MARIE SCADUTO PMHNP-BC
Nurse Practitioner (Psychiatric/Mental Health)
1600 W 38TH ST STE 318
AUSTIN, TX 78731
Travis County (512) 233-3588
CHRISTINA E. TORRES MSN, APRN, PMHNP-BC
Psychiatry & Neurology (Psychiatry)
1600 W 38TH ST STE 318
AUSTIN, TX 78731
Travis County (512) 203-3588
CLEAR WATER PSYCHIATRY & WELLNESS
Psychiatry & Neurology (Psychiatry)
1600 W 38TH ST STE 318
AUSTIN, TX 78731
Travis County (512) 203-3588
MRS. CHRISTINE N KILKENNY APRN, PMHNP-BC
Nurse Practitioner (Psychiatric/Mental Health)
1600 W 38TH ST STE 318
AUSTIN, TX 78731
Travis County (512) 203-3588

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 Nicolaus Williams's NPI number?

The NPI number for Nicolaus Williams is 1881543841. It was assigned to this individual provider in the NPPES registry on January 23, 2026.

Where is Nicolaus Williams located?

Nicolaus Williams practices at 1600 W 38th St Ste 318, Austin, TX 78731. The listed phone number is (512) 203-3588.

What is Nicolaus Williams's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

When was this NPI record last updated?

The NPPES record for Nicolaus Williams was last updated on January 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.