Glen Loy Portwood, M.D.
NPI 1316965726ActiveIndividual· Internal Medicine, Gastroenterology· Charlotte, NC
Internal Medicine, Gastroenterology (M.D.) in Charlotte, North Carolina, trained at Medical College of Georgia School of Medicine (class of 1989). Their prescriptions cost Medicare Part D more than their services did: $2,487,817 for 4,307 claims, against $194,549 paid for services in 2024. Madrigal Pharmaceuticals was the largest of 7 companies reporting payments in 2025, $254.64 in all, mostly food and beverage.
Overview
| NPI | 1316965726 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jul 17, 2006 |
| Last updated in NPPES | May 4, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 9300570 | NC |
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 - Internal Medicine (NC); Practitioner - Gastroenterology (NV); Practitioner - Gastroenterology (SC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 665 |
|---|---|
| Services billed | 2,463 across 44 procedure codes |
| Paid by Medicare | $194,549 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,307 · 8,366 30-day fills |
|---|---|
| Patients | 1,172 |
| Total drug cost | $2,487,817 |
| Generic share | 81% of claims |
Education and affiliations
| Medical school | Medical College of Georgia School of Medicine |
|---|---|
| Graduation year | 1989 |
| Medicare specialty | Internal Medicine |
Medical groups
- Musc Community PhysiciansCentennial, CO · 1,544 clinicians
- Georgetown Physician Associates, LLCMyrtle Beach, SC · 214 clinicians
- Dlp Frye Medical Group LLCHickory, NC · 122 clinicians
- Carolina Digestive Health Associates PACharlotte, NC · 45 clinicians
- Collins Carson City Gastroenterology, LtdCarson City, NV · 12 clinicians
Hospital affiliations
- Frye Regional Medical CenterHickory, NC
- Tidelands Georgetown Memorial HospitalGeorgetown, SC
- Tidelands Waccamaw Community HospitalMurrells Inlet, SC
Industry payments (Open Payments)
- 2025$254.64 · 12 payments from 7 companies
- 2024$1,200 · 54 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Madrigal Pharmaceuticals | $82.82 | 3 |
| Abbvie Inc. | $46.74 | 2 |
| Pfizer Inc. | $45.27 | 2 |
| Vivus LLC | $39.76 | 2 |
| Ardelyx, Inc. | $17.20 | 1 |
What the 2025 payments were for
- Food and Beverage$254.64 · 12 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 79 gastroenterologists in Charlotte · All gastroenterologists in North Carolina