Ryan L. Neff, M.D.
NPI 1427245034ActiveIndividual· Surgery· Saint Louis, MO
Surgery (M.D.) in Saint Louis, Missouri, trained at Jefferson Medical College of Thomas Jefferson University (class of 2001). 268 Medicare patients in 2024, $102,379 paid; nearly all of their 336 Part D prescriptions were generic (98%). Davol Inc. was the largest of 10 companies reporting payments in 2025, $563.83 in all, mostly food and beverage.
Overview
| NPI | 1427245034 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Sep 27, 2007 |
| Last updated in NPPES | Nov 11, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery Primary | 208600000X | 2008007223 | 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 - General Surgery (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 268 |
|---|---|
| Services billed | 511 across 71 procedure codes |
| Paid by Medicare | $102,379 |
Part D prescriptions in 2024
| Prescriptions (claims) | 336 · 338 30-day fills |
|---|---|
| Patients | 292 |
| Total drug cost | $3,134 |
| Generic share | 98% of claims |
Education and affiliations
| Medical school | Jefferson Medical College of Thomas Jefferson University |
|---|---|
| Graduation year | 2001 |
| Medicare specialty | General Surgery |
| Secondary specialties | Surgical Oncology |
| Telehealth | Offers telehealth |
Medical group
- Mercy Clinic Surgical Specialists LLCSaint Louis, MO · 182 clinicians
Hospital affiliations
- Mercy Hospital SouthSaint Louis, MO
- Mercy Hospital St LouisSaint Louis, MO
Industry payments (Open Payments)
- 2025$563.83 · 17 payments from 10 companies
- 2024$695.12 · 19 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Davol Inc. | $274.36 | 4 |
| Merck Sharp & Dohme LLC | $76.09 | 3 |
| Tela Bio, Inc. | $46.96 | 2 |
| Teleflex LLC | $36.47 | 1 |
| Vertex Pharmaceuticals Incorporated | $34.73 | 2 |
What the 2025 payments were for
- Food and Beverage$563.83 · 17 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 273 general surgeons in Saint Louis · All general surgeons in Missouri