Ghassan Hadi, M.D.
NPI 1558497891ActiveIndividual· Internal Medicine· Upland, CA
Internal Medicine (M.D.) with United Hospitalist Inc and 1 other group, practicing in Upland, California. Their prescriptions cost Medicare Part D more than their services did: $962,776 for 10,225 claims, against $199,941 paid for services in 2024. Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) was the largest of 8 companies reporting payments in 2025, $389.94 in all, mostly food and beverage. Lists Casa Colina Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1558497891 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Feb 23, 2007 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A52260 | CA |
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 (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 324 |
|---|---|
| Services billed | 2,154 across 19 procedure codes |
| Paid by Medicare | $199,941 |
Part D prescriptions in 2024
| Prescriptions (claims) | 10,225 · 13,940 30-day fills |
|---|---|
| Patients | 443 |
| Total drug cost | $962,776 |
| Generic share | 83% of claims |
Education and affiliations
| Graduation year | 1988 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical groups
- United Hospitalist IncPomona, CA · 17 clinicians
- Ghassan Hadi MD IncUpland, CA · 2 clinicians
Hospital affiliations
- Casa Colina HospitalPomona, CA
- San Antonio Regional HospitalUpland, CA
Other facilities
- Innovative Care PartnersHome health agency · Los Angeles, CA
- Verdugo Home Health, IncHome health agency · Los Angeles, CA
- Verdugo Hospice Care CenterHospice · Los Angeles, CA
- Casa Colina Hosp for Rehab MedicineInpatient rehabilitation facility · Pomona, CA
- Heritage Park Nursing CenterNursing home · Upland, CA
- Las Colinas Post AcuteNursing home · Ontario, CA
- Trellis ChinoNursing home · Chino, CA
- Upland Rehabilitation and Care CenterNursing home · Upland, CA
- Villa Mesa Care CenterNursing home · Upland, CA
Industry payments (Open Payments)
- 2025$389.94 · 16 payments from 8 companies
- 2024$113.96 · 5 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $143.74 | 5 |
| Amgen Inc. | $63.64 | 3 |
| Astrazeneca Pharmaceuticals LP | $50.57 | 2 |
| Dexcom, Inc. | $41.47 | 2 |
| Bayer Healthcare Pharmaceuticals Inc. | $25.34 | 1 |
What the 2025 payments were for
- Food and Beverage$389.94 · 16 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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