Ismail Kasimoglu, MD, PHD, MBA
NPI 1578095774ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Orange, CA
Internal Medicine, Endocrinology, Diabetes & Metabolism (MD, PHD, MBA) in Orange, California, trained at University of California, Irvine, California College of Medicine (class of 2017). Their prescriptions cost Medicare Part D more than their services did: $418,450 for 1,019 claims, against $118,787 paid for services in 2024. Sanofi-Aventis U.S. LLC was the largest of 2 companies reporting payments in 2025, $45.50 in all, mostly food and beverage.
Overview
| NPI | 1578095774 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD, PHD, MBA |
| Sole proprietor | No |
| NPI issued | Mar 28, 2017 |
| Last updated in NPPES | Mar 26, 2025 |
| Certified by provider | Mar 26, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | A158416 | CA |
| Internal Medicine | 207R00000X | A158416 | CA |
| Hospitalist | 208M00000X | A158416 | 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 | 3,247 across 19 procedure codes |
| Paid by Medicare | $118,787 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,019 · 2,180 30-day fills |
|---|---|
| Patients | 181 |
| Total drug cost | $418,450 |
| Generic share | 40% of claims |
Education and affiliations
| Medical school | University of California, Irvine, California College of Medicine |
|---|---|
| Graduation year | 2017 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Hospitalist |
| Telehealth | Offers telehealth |
Medical group
- Uc RegentsOrange, CA · 319 clinicians
Hospital affiliation
- Uci Health-OrangeOrange, CA
Industry payments (Open Payments)
- 2025$45.50 · 2 payments from 2 companies
- 2024$275.98 · 5 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Sanofi-Aventis U.S. LLC | $28.60 | 1 |
| Abbott Laboratories | $16.90 | 1 |
What the 2025 payments were for
- Food and Beverage$45.50 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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