Robert F. Onder, M.D.
NPI 1164533295ActiveIndividual· Allergy & Immunology, Allergy· Saint Louis, MO
Allergy & Immunology, Allergy (M.D.) in Saint Louis, Missouri, trained at Washington University School of Medicine (class of 1987). In 2024 Medicare paid $155,134 for 155 patients, and Part D covered 657 of their prescriptions, 64% of them generic. Pfizer Inc. was the largest of 3 companies reporting payments in 2025, $116.38 in all, mostly food and beverage.
Overview
| NPI | 1164533295 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Aug 31, 2006 |
| Last updated in NPPES | Oct 18, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Allergy & Immunology, Allergy Primary | 207KA0200X | R9H42 | MO |
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 (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 155 |
|---|---|
| Services billed | 10,811 across 21 procedure codes |
| Paid by Medicare | $155,134 |
Part D prescriptions in 2024
| Prescriptions (claims) | 657 · 1,142 30-day fills |
|---|---|
| Patients | 164 |
| Total drug cost | $109,447 |
| Generic share | 64% of claims |
Education and affiliations
| Medical school | Washington University School of Medicine |
|---|---|
| Graduation year | 1987 |
| Medicare specialty | Allergy/Immunology |
| Secondary specialties | Internal Medicine |
Medical group
- Allergy and Asthma Consultants, PCCreve Coeur, MO · 3 clinicians
Industry payments (Open Payments)
- 2025$116.38 · 6 payments from 3 companies
- 2024$482.64 · 30 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $88.86 | 4 |
| Amgen Inc. | $13.89 | 1 |
| Abbvie Inc. | $13.63 | 1 |
What the 2025 payments were for
- Food and Beverage$116.38 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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