Registry record
- NPI
- 1386607992
- Profession
- Nurse Practitioner (NP)
- Specialty
- Pediatric Nurse Practitioner (363LP0200X)
- Practice address
- 200 Nola Ruth Blvd
Harker Heights, TX 76548 - Phone
- 8778005722
- In the registry since
- April 7, 2006
- Last NPPES update
- May 5, 2014
- Sole proprietor
- Yes
- License
- 854069 (TX)
At this location
2 other providers in our data list 200 Nola Ruth Blvd, Harker Heights as a practice address:
- Karen M Laird, FNP-C
Nurse Practitioner · NPI 1609008655
- Rubi Ramirez, PNP-PC
Pediatric Nurse Practitioner · NPI 1942665427
In context
The NPI number of Mark Terwilliger is 1386607992. They are a Pediatric Nurse Practitioner in Harker Heights, Texas.
Mark Terwilliger is one of 5 Pediatric Nurse Practitioners in Harker Heights and one of 2,482 across Texas in our data.
The NPI has been in the federal registry for 20 years, since April 7, 2006.
Frequently asked questions
What is NPI 1386607992?
NPI 1386607992 is the 10-digit National Provider Identifier assigned to Mark Terwilliger, a Pediatric Nurse Practitioner practicing in Harker Heights, Texas. The record has been in the NPPES registry since April 7, 2006.
How do I verify this provider?
Cross-check NPI 1386607992 in the official CMS registry at npiregistry.cms.hhs.gov, and confirm license 854069 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 May 5, 2014. 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.