Registry record
- NPI
- 1629139407
- Profession
- Nurse Practitioner (NP)
- Specialty
- Gerontology Nurse Practitioner (363LG0600X)
- Practice address
- 1480 Katy Flewellen Rd
Katy, TX 77494 - Phone
- 7134168409
- In the registry since
- December 13, 2006
- Last NPPES update
- October 26, 2012
- Sole proprietor
- No
- License
- 556795 (TX)
At this location
This location lists no other NP or PA providers in our current data.
In context
The NPI number of Mary Williams is 1629139407. They are a Gerontology Nurse Practitioner in Katy, Texas.
Mary Williams is one of 33 Gerontology Nurse Practitioners in Katy and one of 1,529 across Texas in our data. Katy ranks #14 among Texas cities in our dataset, with 538 NP and PA providers.
The NPI has been in the federal registry for 19 years, since December 13, 2006.
Frequently asked questions
What is NPI 1629139407?
NPI 1629139407 is the 10-digit National Provider Identifier assigned to Mary Williams, a Gerontology Nurse Practitioner practicing in Katy, Texas. The record has been in the NPPES registry since December 13, 2006.
How do I verify this provider?
Cross-check NPI 1629139407 in the official CMS registry at npiregistry.cms.hhs.gov, and confirm license 556795 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 October 26, 2012. 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.