Registry record
- NPI
- 1437456498
- Profession
- Physician Assistant (PA)
- Specialty
- Surgical Physician Assistant (363AS0400X)
- Practice address
- 484 N Post Oak Ln
Houston, TX 77024 - Phone
- 7133039714
- In the registry since
- February 27, 2011
- Last NPPES update
- February 27, 2011
- Sole proprietor
- Yes
- License
- N/A
At this location
This location lists no other NP or PA providers in our current data.
In context
The NPI number of Mark Gilliland is 1437456498. They are a Surgical Physician Assistant in Houston, Texas.
Mark Gilliland is one of 457 Surgical Physician Assistants in Houston and one of 1,762 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 15 years, since February 27, 2011.
Frequently asked questions
What is NPI 1437456498?
NPI 1437456498 is the 10-digit National Provider Identifier assigned to Mark Gilliland, a Surgical Physician Assistant practicing in Houston, Texas. The record has been in the NPPES registry since February 27, 2011.
How do I verify this provider?
Cross-check NPI 1437456498 in the official CMS registry at npiregistry.cms.hhs.gov, and confirm license N/A 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 February 27, 2011. 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.