Gregory Allan Holton Jr., M.D.
Opted out of Medicare from August 2025 to August 2027. Internal Medicine (M.D.) in Muskegon, Michigan, licensed in MI and TX, with an NPI issued in May 2014. Their prescriptions cost Medicare Part D more than their services did: $725,019 for 6,214 claims, against $25,324 paid for services in 2024. Lilly USA, LLC was the largest of 2 companies reporting payments in 2025, $34.22 in all, mostly food and beverage.
Overview
| NPI | 1194136556 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 19, 2014 |
| Last updated in NPPES | May 11, 2020 |
| Certified by provider | May 11, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 4301116240 | MI |
| Internal Medicine | 207R00000X | BP10049459 | 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) | Not in the public enrollment file of Oct 1, 2026 |
|---|---|
| Opt-out | Opted out Aug 4, 2025 – Aug 4, 2027 |
| Can order and refer | Yes |
| Accepts assignment | Yes (participating) |
During an opt-out period the provider sees Medicare patients only under private contracts, and Medicare does not pay claims for their services.
Medicare services in 2024
| Medicare patients | 148 |
|---|---|
| Services billed | 395 across 12 procedure codes |
| Paid by Medicare | $25,324 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,214 · 14,577 30-day fills |
|---|---|
| Patients | 489 |
| Total drug cost | $725,019 |
| Generic share | 82% of claims |
Industry payments (Open Payments)
- 2025$34.22 · 2 payments from 2 companies
- 2024$51.57 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $18.10 | 1 |
| Novo Nordisk Inc | $16.12 | 1 |
What the 2025 payments were for
- Food and Beverage$34.22 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 63 internal medicine physicians in Muskegon · All internal medicine physicians in Michigan