DR. ANNA ELIZABETH O'CONNOR (MD) – Allergy & Immunology Physician, NPI 1053931345
Allergy & Immunology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
390 ALLERGY/IMMUNOLOGY in TX
Provider Addresses for DR. ANNA ELIZABETH O'CONNOR (MD)
303 E MAIN ST
ROUND ROCK, TX 786645246
Phone: (512) 732-2774
Fax: (512) 344-9221
Type: Mailing
5656 Bee Caves Rd Ste G201
West Lake Hills, TX 787465236
Phone: (512) 732-2774
Type: Location
200 Sydney Blvd
Thorndale, TX 765775432
Phone: (512) 732-2774
Type: Location
5625 Eiger Rd Ste 125
Austin, TX 787358979
Phone: (512) 732-2774
Type: Location
1640 Highland Falls Dr Ste 601
Leander, TX 786414842
Phone: (512) 732-2774
Type: Location
11762 Jollyville Rd
Austin, TX 787593937
Phone: (512) 732-2774
Type: Location
6611 River Place Blvd Ste 100
Austin, TX 787301163
Phone: (512) 732-2774
Type: Location
3101 Highway 71 E Ste 210
Bastrop, TX 786025157
Phone: (512) 732-2774
Type: Location
3944 Ranch Road 620 S Ste 202
Austin, TX 787387166
Phone: (512) 732-2774
Type: Location
625 19TH ST S
BIRMINGHAM, AL 352331900
Phone: (205) 638-9589
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 4 Open Payments records for all available years, with a total value of $400.
Total Amount is formed as General ($400) + Research ($0) + Ownership ($0) = $400.
Last reported payment date: 2024-05-01 • Largest payer in this snapshot: Regeneron Healthcare Solutions, Inc. ($178).
Total Amount
$400
General + Research + Ownership
Payments
4
Total payment records
General Amount
$400
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-05-01
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Regeneron Healthcare Solutions, Inc. | $178 |
| BioCryst US Sales Co., LLC | $125 |
| GlaxoSmithKline, LLC. | $97 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2025-05-20
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20250520000131 | I | Allergy/Immunology | TX | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 78664)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine, Allergy/Immunology | TX | |
| A L L E R G Y/ I M M U N O L O G Y | MO | |
| A L L E R G Y/ I M M U N O L O G Y | TX | |
| Nurse Practitioner | TX | |
| - | TX | |
| A L L E R G Y/ I M M U N O L O G Y | TX | |
| - | TX | |
| A L L E R G Y/ I M M U N O L O G Y | SD | |
| Allergy/Immunology, Internal Medicine | NC | |
| A L L E R G Y/ I M M U N O L O G Y | TX |
Reviews
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