Brian John Ball, M.D.
NPI 1356754683ActiveIndividual· Internal Medicine, Hematology· Duarte, CA
Internal Medicine, Hematology (M.D.) with City of Hope Medical Foundation, practicing in Duarte, California. Their prescriptions cost Medicare Part D more than their services did: $1,703,892 for 503 claims, against $74,955 paid for services in 2024. Taiho Oncology, Inc. was the largest of 10 companies reporting payments in 2025, $4,082 in all, mostly consulting fees.
Overview
| NPI | 1356754683 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 4, 2014 |
| Last updated in NPPES | Nov 11, 2020 |
| Certified by provider | Nov 11, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology Primary | 207RH0000X | A169947 | CA |
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 - Hematology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 144 |
|---|---|
| Services billed | 938 across 16 procedure codes |
| Paid by Medicare | $74,955 |
Part D prescriptions in 2024
| Prescriptions (claims) | 503 · 593 30-day fills |
|---|---|
| Patients | 47 |
| Total drug cost | $1,703,892 |
| Generic share | 77% of claims |
Education and affiliations
| Graduation year | 2014 |
|---|---|
| Medicare specialty | Hematology |
| Telehealth | Offers telehealth |
Medical group
- City of Hope Medical FoundationDuarte, CA · 982 clinicians
Other facilities
- Lifelink Health Providers, IncHome health agency · Glendora, CA
Industry payments (Open Payments)
- 2025$4,082 · 12 payments from 10 companies
- 2024$6,758 · 9 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Taiho Oncology, Inc. | $2,223 | 2 |
| E.R. Squibb & Sons, L.L.C. | $1,433 | 1 |
| Syndax Pharmaceuticals, Inc. | $147.11 | 1 |
| Geron Corporation | $122.36 | 2 |
| Melinta Therapeutics, LLC | $34.34 | 1 |
What the 2025 payments were for
- Consulting Fee$3,533 · 2 payments
- Food and Beverage$549.55 · 10 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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