Douglas Grey Barstow Jr., M.D.
NPI 1326166273ActiveIndividual· Allergy & Immunology· Austin, TX
Allergy & Immunology (M.D.) in Austin, Texas, trained at University of Texas Medical Branch at Galveston (class of 2001). In 2024 Medicare paid $182,382 for 165 patients, and Part D covered 514 of their prescriptions, 73% of them generic. Astrazeneca Pharmaceuticals LP was the largest of 22 companies reporting payments in 2025, $1,745 in all, mostly food and beverage.
Overview
| NPI | 1326166273 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 27, 2007 |
| Last updated in NPPES | Oct 31, 2023 |
| Certified by provider | Oct 31, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Allergy & Immunology Primary | 207K00000X | M8520 | TX |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Allergy/Immunology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 165 |
|---|---|
| Services billed | 9,893 across 21 procedure codes |
| Paid by Medicare | $182,382 |
Part D prescriptions in 2024
| Prescriptions (claims) | 514 · 798 30-day fills |
|---|---|
| Patients | 126 |
| Total drug cost | $146,802 |
| Generic share | 73% of claims |
Education and affiliations
| Medical school | University of Texas Medical Branch at Galveston |
|---|---|
| Graduation year | 2001 |
| Medicare specialty | Allergy/Immunology |
| Secondary specialties | Internal Medicine |
Medical group
- Allergy Partners of Texas IncAustin, TX · 22 clinicians
Industry payments (Open Payments)
- 2025$1,745 · 95 payments from 22 companies
- 2024$1,565 · 78 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $330.60 | 28 |
| Ars Pharmaceuticals Operations, Inc. | $269.28 | 10 |
| Regeneron Healthcare Solutions, Inc. | $235.20 | 12 |
| Amgen Inc. | $172.56 | 11 |
| Csl Behring | $122.68 | 4 |
What the 2025 payments were for
- Food and Beverage$1,704 · 93 payments
- Education$40.77 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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