A.W. GRIMES MEDICAL OFFICES
NPI 1790937738
Clinic/Center - Federally Qualified Health Center (FQHC) in Round Rock, TX
About A.w. Grimes Medical Offices NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
A.W. GRIMES MEDICAL OFFICES (NPI 1790937738) is a healthcare organization registered as a federally qualified health center (fqhc) in Round Rock, Texas and active in the NPI registry since October 2008. The organization lists Peter C Perialas, Chief Executive Officer, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 2
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
A.w. Grimes Medical Offices is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
160Medicare enrollment records show 160 clinicians reassign Medicare billing to A.W. Grimes Medical Offices, which bills Medicare for the services they deliver. Of these, 71 practice within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 13
Nearest to this location (20)
See all 160Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Lone Star Circle Of Care's NPI number?
The NPI number for Lone Star Circle Of Care is 1790937738. It was assigned to this organization in the NPPES registry on October 22, 2008. The provider is doing business as A.W. Grimes Medical Offices.
Where is Lone Star Circle Of Care located?
Lone Star Circle Of Care is located at 2051 Gattis School Rd Suite 250, Round Rock, TX 78664. The listed phone number is (877) 800-5722.
What is Lone Star Circle Of Care's specialty?
The primary specialty registered for this NPI is Clinic/Center, specializing in Federally Qualified Health Center (FQHC), with taxonomy code 261QF0400X.
Is Lone Star Circle Of Care enrolled in Medicare?
Yes. Lone Star Circle Of Care is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Lone Star Circle Of Care?
According to the CMS Revalidation Reassignment List (October 2026 release), 160 clinicians in 13 Medicare specialties reassign their Medicare billing to Lone Star Circle Of Care. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Nurse Practitioner (36), Obstetrics/Gynecology (26) and Pediatric Medicine (26). Of these, 71 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Lone Star Circle Of Care was last updated on March 3, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# A.w. Grimes Medical Offices · NPI 1790937738
Federally Qualified Health Center (FQHC) organization in Round Rock, Texas. Organization record, active in the CMS NPPES registry since October 22, 2008.
## Identity
- **NPI:** 1790937738 (Entity type: Organization)
- **Enumerated:** October 22, 2008
- **Primary specialty:** Clinic/Center - Federally Qualified Health Center (FQHC) · taxonomy 261QF0400X
- **Legal business name:** Lone Star Circle Of Care
- **Organization subpart:** Yes (part of Lone Star Circle Of Care)
- **Authorized official:** Peter Perialas, CHIEF EXECUTIVE OFFICER
## Practice location
- **Address:** 2051 GATTIS SCHOOL RD, SUITE 250, Round Rock, TX 78664-7441
- **Phone:** (877) 800-5722 · **Fax:** (512) 238-5492
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 160 clinicians in 13 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (36), Obstetrics/Gynecology (26), Pediatric Medicine (26); 71 practice within 10 miles; [full list](https://npiprofile.com/npi/1790937738/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** March 3, 2011
- **Other identifiers:** Medicaid 206351301 (TX); Medicare PIN 67-1901 (TX)
---
Source: [NPI Profile](https://npiprofile.com/npi/1790937738) · Data from the CMS NPPES public registry.