Ivy-Joan Erinma Madu, M.D.
NPI 1710988662ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Orange, CA
Internal Medicine, Endocrinology, Diabetes & Metabolism (M.D.) in Orange, California, licensed in CA, with an NPI issued in August 2005. Their prescriptions cost Medicare Part D more than their services did: $2,985,113 for 8,375 claims, against $81,687 paid for services in 2024. Amgen Inc. was the largest of 20 companies reporting payments in 2025, $6,311 in all, mostly consulting fees. Lists Providence St. Joseph Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1710988662 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Aug 2, 2005 |
| Last updated in NPPES | Apr 16, 2022 |
| Certified by provider | Apr 16, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | A50150 | 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 | 335 |
|---|---|
| Services billed | 1,158 across 15 procedure codes |
| Paid by Medicare | $81,687 |
Part D prescriptions in 2024
| Prescriptions (claims) | 8,375 · 17,441 30-day fills |
|---|---|
| Patients | 755 |
| Total drug cost | $2,985,113 |
| Generic share | 40% of claims |
Education and affiliations
| Graduation year | 1981 |
|---|---|
| Medicare specialty | Internal Medicine |
| Secondary specialties | Endocrinology |
Hospital affiliations
- Providence St. Joseph HospitalOrange, CA
- Riverview Medical CenterRed Bank, NJ
Industry payments (Open Payments)
- 2025$6,311 · 60 payments from 20 companies
- 2024$247.34 · 18 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $3,133 | 14 |
| Abbvie Inc. | $2,236 | 4 |
| Novo Nordisk Inc | $179.35 | 5 |
| Abbott Laboratories | $170.77 | 11 |
| Sequel Med Tech, LLC | $82.94 | 3 |
What the 2025 payments were for
- Consulting Fee$5,080 · 2 payments
- Food and Beverage$1,189 · 57 payments
- Education$42.50 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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