Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Anna Elizabeth O'Connor, MD

Individual provider Pediatrics Physician · NPI 1053931345

Dr. Anna Elizabeth O'Connor, MD practises Allergy/Immunology in Round Rock, Texas. Graduated from University of Mississippi School of Medicine in 2020, 6 years ago. Practices with Greater Austin Allergy, Asthma and Immunology PA, a 10-clinician group, works from 9 locations and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
6
Trained at
University of Mississippi School of Medicine
Licensed in
TX
In the registry since
2020
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

303 E Main St
Round Rock, TX 78664-5246
Phone: (512) 732-2774
Fax: (512) 344-9221
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (8)

  • 11762 Jollyville Rd, Austin, TX 78759-3937 — (512) 732-2774
  • 6611 River Place Blvd Ste 100, Austin, TX 78730-1163 — (512) 732-2774
  • 5625 Eiger Rd Ste 125, Austin, TX 78735-8979 — (512) 732-2774
  • 3944 Ranch Road 620 S Ste 202, Austin, TX 78738-7166 — (512) 732-2774
  • 3101 Highway 71 E Ste 210, Bastrop, TX 78602-5157 — (512) 732-2774
  • 1640 Highland Falls Dr Ste 601, Leander, TX 78641-4842 — (512) 732-2774
  • 200 Sydney Blvd, Thorndale, TX 76577-5432 — (512) 732-2774
  • 5656 Bee Caves Rd Ste G201, West Lake Hills, TX 78746-5236 — (512) 732-2774

Specialties & licences

Allergy & Immunology Physician (primary) Taxonomy 207K00000X · Licence V7268 (TX)
Pediatrics Physician Taxonomy 208000000X · Licence V7268 (TX)

Record details

NPI number1053931345
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 16, 2020
Last updated in NPPESMay 15, 2025
Certification dateMay 15, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyALLERGY/IMMUNOLOGY
Medical schoolUNIVERSITY OF MISSISSIPPI SCHOOL OF MEDICINE
Graduated 2020 (6 years in practice)
Group practice Greater Austin Allergy, Asthma And Immunology Pa — 10 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $598 17 payments · a meal or drink at a meeting or visit, not a fee
Education $34 1 payment · educational material or training, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Colleagues at Greater Austin Allergy, Asthma and Immunology PA

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 10 clinicians in the practice; 7 are shown here.

Other providers in Round Rock