Registry record
- NPI
- 1447580212
- Profession
- Nurse Practitioner (NP)
- Specialty
- Women's Health Nurse Practitioner (363LW0102X)
- Practice address
- 12201 Renfert Way Ste 225
Austin, TX 78758 - Phone
- 5123396626
- In the registry since
- December 30, 2009
- Last NPPES update
- October 14, 2016
- Sole proprietor
- No
- License
- AP113605 (TX)
At this location
5 other providers in our data list 12201 Renfert Way Ste 225, Austin as a practice address:
- Michelle Danielson, WHNP-BC
Women's Health Nurse Practitioner · NPI 1700116548
- Ms. Brittany Heather Key, P.A.
Medical Physician Assistant · NPI 1972629046
- Wendy McGinty-Gamble, PA-C
Medical Physician Assistant · NPI 1508196346
- Cherilyn Wilcox, WHCNP
Women's Health Nurse Practitioner · NPI 1801126685
- Ms. Tania Zeshan Yousaf, RN, APRN, FNP-C
Family Nurse Practitioner · NPI 1326555921
In context
The NPI number of Mariann Nielsen is 1447580212. They are a Women's Health Nurse Practitioner in Austin, Texas.
Mariann Nielsen is one of 53 Women's Health Nurse Practitioners in Austin and one of 1,070 across Texas in our data. Austin ranks #4 among Texas cities in our dataset, with 2,782 NP and PA providers.
The NPI has been in the federal registry for 16 years, since December 30, 2009.
Frequently asked questions
What is NPI 1447580212?
NPI 1447580212 is the 10-digit National Provider Identifier assigned to Mariann Nielsen, a Women's Health Nurse Practitioner practicing in Austin, Texas. The record has been in the NPPES registry since December 30, 2009.
How do I verify this provider?
Cross-check NPI 1447580212 in the official CMS registry at npiregistry.cms.hhs.gov, and confirm license AP113605 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 14, 2016. 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.