Charlie Issa Gnaim, M.D.
NPI 1245386424ActiveIndividual· Internal Medicine, Interventional Cardiology· Humble, TX
Internal Medicine, Interventional Cardiology (M.D.) in Humble, Texas, trained at University of Texas Medical School at Houston (class of 2002). Their prescriptions cost Medicare Part D more than their services did: $506,048 for 4,149 claims, against $200,868 paid for services in 2024. Heartflow, Inc. was the largest of 13 companies reporting payments in 2025, $1,420 in all, mostly food and beverage.
Overview
| NPI | 1245386424 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jan 28, 2007 |
| Last updated in NPPES | May 19, 2026 |
| Certified by provider | May 19, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Interventional Cardiology Primary | 207RI0011X | M0413 | TX |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | M0413 | TX |
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 - Interventional Cardiology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 622 |
|---|---|
| Services billed | 1,985 across 53 procedure codes |
| Paid by Medicare | $200,868 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,149 · 9,783 30-day fills |
|---|---|
| Patients | 599 |
| Total drug cost | $506,048 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | University of Texas Medical School at Houston |
|---|---|
| Graduation year | 2002 |
| Medicare specialty | Interventional Cardiology |
Medical group
- Cardiovascular Association, P.L.L.C.Humble, TX · 48 clinicians
Hospital affiliations
- HCA Houston Healthcare KingwoodKingwood, TX
- Memorial Hermann Hospital SystemHouston, TX
- Memorial Hermann Northeast HospitalHumble, TX
Industry payments (Open Payments)
- 2025$1,420 · 39 payments from 13 companies
- 2024$1,556 · 52 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Heartflow, Inc. | $227.05 | 4 |
| Abbott Laboratories | $204.87 | 4 |
| Novartis Pharmaceuticals Corporation | $196.79 | 14 |
| Medtronic, Inc. | $191.04 | 2 |
| Boston Scientific Corporation | $159.70 | 5 |
What the 2025 payments were for
- Food and Beverage$1,420 · 39 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Interventional Cardiology providers in Humble
- 1104329440
- 1477768141
- 1194286864
- 1285872804
- 1275896649
- 1740398577
- 1295843019
- 1083907695
- 1710237250
- 1114281672
- 1912498692
- 1477849461
All Internal Medicine, Interventional Cardiology providers in Texas →