NPPES file of Aug 9, 2026

Joan Margaret Carroll Garza

Surgical Physician Assistant · Round Rock, TX

Joan Margaret Carroll Garza is a surgical physician assistant with a practice address in Round Rock, Texas, and NPI 1124502794, issued on Sep 19, 2018. Check the license with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1124502794
Name
Joan Margaret Carroll Garza
Primary taxonomy
Surgical Physician Assistant 363AS0400X
Practice location
301 Seton Pkwy Ste 402, Round Rock, TX 78665
Phone
(512) 324-4815
Enumerated
Sep 19, 2018
Record last updated
May 6, 2022
Medicare enrollment
Enrolled (PECOS I20190606001615); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 301 Seton Pkwy Ste 402

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Joe Hidrogo, D.ONeurology Physician1184072043
  2. Natalie Lauryssen, PASurgical Physician Assistant1811280324
  3. Maricruz Rivera, MD, PHDNeurological Surgery Physician1356847099
  4. Borna Tabibian, MDNeurological Surgery Physician1295199685

Verify Joan Margaret Carroll Garza in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Texas board licenses this professionCheck the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
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88% fewer Medicare Part D claims than the average surgical physician assistant in 2024

37 Medicare Part D claims for 32 beneficiaries, against an average of 304 among the 10,174 providers of this specialty who prescribed in Part D.

  1. Joan Garza37
  2. Specialty average304

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through one group practice

  1. Seton Family OF DoctorsGeorgetown, TX

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Joan Margaret Carroll Garza among 1,350 surgical physician assistant records in Texas

Joan Margaret Carroll Garza is one of 1,350 surgical physician assistant records with a practice address in Texas. 55% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 67% of them.

  • NPI issued2018 · 67% of these records are older, 28% newer
  • In a Medicare fileYes · 55% of these records are
  • In the CMS Doctors and Clinicians fileYes · 46% of these records are
  • Graduated2018 · median 2016 among the 617 with a school on file
  • Record last updated2022 · 52% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AS0400X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Surgical Physician Assistant providers in Texas

There are 1,350 surgical physician assistant records in Texas.

The 8 surgical physician assistant records with the nearest ZIP codes

  1. Elizabeth Barrett, PA-CRound Rock, TX 786651568973782
  2. Nidhi Dover, PA-CRound Rock, TX 786651215275094
  3. Troy Griffith, MS, PA-CRound Rock, TX 786651871817064
  4. Natalie Lauryssen, PARound Rock, TX 786651811280324
  5. Dianna Martin, PHYSICIAN ASSISTANTRound Rock, TX 786651922115005
  6. Wendi Martin-Stewart, PARound Rock, TX 786651952399412
  7. John Merrell, P.A.Round Rock, TX 786651912961897
  8. Aren Paiva, PA-CRound Rock, TX 786651104946417

Common questions

What is Joan Margaret Carroll Garza's NPI number?

Joan Margaret Carroll Garza's National Provider Identifier (NPI) is 1124502794, issued on Sep 19, 2018. An NPI identifies a provider in billing; it is not a license.

Where is Joan Margaret Carroll Garza located?

The NPPES record lists a practice address at 301 Seton Pkwy Ste 402, Round Rock, TX, 78665. Phone: (512) 324-4815. Providers update this record themselves, so call before visiting.

How can I verify Joan Margaret Carroll Garza's license?

Search the Texas board that licenses this profession; the NPPES record confirms identity only.

How much does Joan Margaret Carroll Garza prescribe under Medicare Part D?

In 2024, Joan Margaret Carroll Garza had 37 Medicare Part D claims for 32 beneficiaries; the average among surgical physician assistant prescribers was 304. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.