Charles H. Redfern, M.D.
NPI 1225007396ActiveIndividual· Internal Medicine, Hematology & Oncology· San Diego, CA
Internal Medicine, Hematology & Oncology (M.D.) in San Diego, California, trained at Johns Hopkins University School of Medicine (class of 1991). In 2024 Medicare paid $553,316 for 265 patients, and Part D covered 449 of their prescriptions, 84% of them generic. Monteris Medical Corporation was the largest of 3 companies reporting payments in 2025, $383.75 in all, mostly food and beverage.
Overview
| NPI | 1225007396 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 14, 2006 |
| Last updated in NPPES | Jul 26, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | A52733 | 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 - Hematology/Oncology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 265 |
|---|---|
| Services billed | 23,872 across 73 procedure codes |
| Paid by Medicare | $553,316 |
Part D prescriptions in 2024
| Prescriptions (claims) | 449 · 640 30-day fills |
|---|---|
| Patients | 97 |
| Total drug cost | $786,398 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | Johns Hopkins University School of Medicine |
|---|---|
| Graduation year | 1991 |
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical group
- Medical Oncology Associates of San Diego A Medical Group IncSan Diego, CA · 14 clinicians
Hospital affiliations
- Grossmont HospitalLa Mesa, CA
- Sharp Coronado Hospital and Hlthcr CtrCoronado, CA
- Sharp Memorial HospitalSan Diego, CA
Industry payments (Open Payments)
- 2025$383.75 · 4 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Monteris Medical Corporation | $231.40 | 1 |
| Genzyme Corporation | $96.72 | 1 |
| Tempus Ai, Inc | $55.63 | 2 |
What the 2025 payments were for
- Food and Beverage$383.75 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 95 hematologist-oncologists in San Diego · All hematologist-oncologists in California