Michael Whiting Ryan, M.D.
NPI 1134278799ActiveIndividual· Internal Medicine, Gastroenterology· Mooresville, NC
Internal Medicine, Gastroenterology (M.D.) in Mooresville, North Carolina, trained at Wayne State University School of Medicine (class of 2000). Their prescriptions cost Medicare Part D more than their services did: $440,399 for 1,525 claims, against $280,644 paid for services in 2024. Madrigal Pharmaceuticals was the largest of 3 companies reporting payments in 2025, $61.02 in all, mostly food and beverage.
Overview
| NPI | 1134278799 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jan 10, 2007 |
| Last updated in NPPES | Jun 6, 2025 |
| Certified by provider | Jun 6, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 200701230 | NC |
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 - Gastroenterology (NC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 497 |
|---|---|
| Services billed | 11,644 across 51 procedure codes |
| Paid by Medicare | $280,644 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,525 · 2,451 30-day fills |
|---|---|
| Patients | 456 |
| Total drug cost | $440,399 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | Wayne State University School of Medicine |
|---|---|
| Graduation year | 2000 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Charlotte Gastroenterology and Hepatology PLLCCharlotte, NC · 79 clinicians
Hospital affiliations
- Novant Health Huntersville Medical CenterHuntersville, NC
- Novant Health Mint Hill Medical CenterCharlotte, NC
- Novant Health Presbyterian Medical CenterCharlotte, NC
- Novant Health Rowan Medical CenterSalisbury, NC
Industry payments (Open Payments)
- 2025$61.02 · 4 payments from 3 companies
- 2024$251.81 · 6 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Madrigal Pharmaceuticals | $25.13 | 1 |
| Novo Nordisk Inc | $18.40 | 1 |
| Phathom Pharmaceuticals, Inc. | $17.49 | 2 |
What the 2025 payments were for
- Food and Beverage$61.02 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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