John Byron Riser, MD
NPI 1134216088ActiveIndividual· Specialist· Birmingham, AL
Specialist (MD) in Birmingham, Alabama, trained at University of Alabama School of Medicine (class of 1984). Their prescriptions cost Medicare Part D more than their services did: $2,633,225 for 2,896 claims, against $240,360 paid for services in 2024. Genzyme Corporation was the largest of 25 companies reporting payments in 2025, $6,952 in all, mostly food and beverage.
Overview
| NPI | 1134216088 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 10, 2006 |
| Last updated in NPPES | Aug 16, 2021 |
| Certified by provider | Aug 16, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Specialist Primary | 174400000X | 12140 | AL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Neurology (AL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 239 |
|---|---|
| Services billed | 6,404 across 30 procedure codes |
| Paid by Medicare | $240,360 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,896 · 4,177 30-day fills |
|---|---|
| Patients | 383 |
| Total drug cost | $2,633,225 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | University of Alabama School of Medicine |
|---|---|
| Graduation year | 1984 |
| Medicare specialty | Neurology |
Medical group
- Alabama Neurology AssociatesBirmingham, AL · 14 clinicians
Industry payments (Open Payments)
- 2025$6,952 · 189 payments from 25 companies
- 2024$4,017 · 185 payments from 26 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Genzyme Corporation | $2,904 | 1 |
| Neurocrine Biosciences, Inc. | $521.84 | 21 |
| Tg Therapeutics, Inc. | $394.44 | 14 |
| Alexion Pharmaceuticals, Inc. | $364.69 | 15 |
| Novartis Pharmaceuticals Corporation | $260.15 | 13 |
What the 2025 payments were for
- Food and Beverage$3,971 · 187 payments
- Consulting Fee$2,904 · 1 payment
- Education$76.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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