NPI Atlas

Nicolaus Williams, PMHNP-BC

Psychiatric/Mental Health Nurse Practitioner in Austin, Texas. NPI 1881543841.

NPI1881543841

Registry record

NPI
1881543841
Profession
Nurse Practitioner (NP)
Specialty
Psychiatric/Mental Health Nurse Practitioner (363LP0808X)
Practice address
1600 W 38th St Ste 318
Austin, TX 78731
Phone
5122033588
In the registry since
January 23, 2026
Last NPPES update
January 23, 2026
Sole proprietor
No
License
1216723 (TX)

At this location

6 other providers in our data list 1600 W 38th St Ste 318, Austin as a practice address:

In context

The NPI number of Nicolaus Williams is 1881543841. They are a Psychiatric/Mental Health Nurse Practitioner in Austin, Texas.

Nicolaus Williams is one of 310 Psychiatric/Mental Health Nurse Practitioners in Austin and one of 4,351 across Texas in our data. Austin ranks #4 among Texas cities in our dataset, with 2,782 NP and PA providers.

Frequently asked questions

What is NPI 1881543841?

NPI 1881543841 is the 10-digit National Provider Identifier assigned to Nicolaus Williams, a Psychiatric/Mental Health Nurse Practitioner practicing in Austin, Texas. The record has been in the NPPES registry since January 23, 2026.

How do I verify this provider?

Cross-check NPI 1881543841 in the official CMS registry at npiregistry.cms.hhs.gov, and confirm license 1216723 with the TX licensing board. You can also run the number through our free NPI validator to confirm its checksum.

Is this information current?

This profile reflects the June 2026 NPPES data file. NPPES lists the record's last update as January 23, 2026. We refresh our data each month when CMS publishes a new file.

Data: NPPES public registry, June 2026 file. Not medical advice. Verify independently before care or credentialing decisions. Errors in the source record can be corrected at nppes.cms.hhs.gov; see our corrections page.