NPI Atlas

Lydia Madsen, APN

Nurse Practitioner in Houston, Texas. NPI 1821134206.

NPI1821134206

Registry record

NPI
1821134206
Profession
Nurse Practitioner (NP)
Specialty
Nurse Practitioner (363L00000X)
Practice address
1515 Holcombe Blvd
Houston, TX 77030
Phone
7137926161
In the registry since
January 30, 2007
Last NPPES update
July 8, 2007
Sole proprietor
No
License
242354 (TX)

At this location

1,545 other providers in our data list 1515 Holcombe Blvd, Houston as a practice address:

In context

The NPI number of Lydia Madsen is 1821134206. They are a Nurse Practitioner in Houston, Texas.

Lydia Madsen is one of 1,048 Nurse Practitioners in Houston and one of 6,739 across Texas in our data. Houston ranks #1 among Texas cities in our dataset, with 8,326 NP and PA providers.

The NPI has been in the federal registry for 19 years, since January 30, 2007.

Frequently asked questions

What is NPI 1821134206?

NPI 1821134206 is the 10-digit National Provider Identifier assigned to Lydia Madsen, a Nurse Practitioner practicing in Houston, Texas. The record has been in the NPPES registry since January 30, 2007.

How do I verify this provider?

Cross-check NPI 1821134206 in the official CMS registry at npiregistry.cms.hhs.gov, and confirm license 242354 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 July 8, 2007. 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.