Jose Leonel Ochoa-Bayona, M.D.
NPI 1669475158ActiveIndividual· Internal Medicine, Hematology & Oncology· Walnut Creek, CA
Internal Medicine, Hematology & Oncology (M.D.) with John Muir Physician Network, practicing in Walnut Creek, California. Their prescriptions cost Medicare Part D more than their services did: $942,050 for 982 claims, against $16,680 paid for services in 2024. Merck Sharp & Dohme LLC was the largest of 20 companies reporting payments in 2025, $1,296 in all, mostly food and beverage. Lists John Muir Medical Center - Concord Campus and 1 other hospital as hospital affiliations.
Overview
| NPI | 1669475158 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 27, 2005 |
| Last updated in NPPES | Jun 10, 2025 |
| Certified by provider | Jun 6, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | C171204 | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Hematology/Oncology (CA); Practitioner - Hematopoietic Cell Transplantation and Cellular Therapy (FL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 73 |
|---|---|
| Services billed | 251 across 15 procedure codes |
| Paid by Medicare | $16,680 |
Part D prescriptions in 2024
| Prescriptions (claims) | 982 · 1,534 30-day fills |
|---|---|
| Patients | 90 |
| Total drug cost | $942,050 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 1989 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical group
- John Muir Physician NetworkPleasant Hill, CA · 494 clinicians
Hospital affiliations
- John Muir Medical Center - Concord CampusConcord, CA
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA
Industry payments (Open Payments)
- 2025$1,296 · 48 payments from 20 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $141.68 | 5 |
| Takeda Pharmaceuticals U.S.A., Inc. | $125.21 | 2 |
| Novartis Pharmaceuticals Corporation | $122.03 | 4 |
| Astrazeneca Pharmaceuticals LP | $120.32 | 4 |
| Pfizer Inc. | $118.76 | 4 |
What the 2025 payments were for
- Food and Beverage$1,273 · 47 payments
- Education$23.10 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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