John Y. Ko, MD
NPI 1972605541ActiveIndividual· Internal Medicine, Interventional Cardiology· Sacramento, CA
Internal Medicine, Interventional Cardiology (MD) in Sacramento, California, trained at University of California, Geffen School of Medicine (class of 2004). Their prescriptions cost Medicare Part D more than their services did: $45,258 for 425 claims, against $5,733 paid for services in 2024. Abbott Laboratories was the largest of 4 companies reporting payments in 2025, $3,022 in all, mostly food and beverage.
Overview
| NPI | 1972605541 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 2, 2006 |
| Last updated in NPPES | Sep 28, 2026 |
| Certified by provider | Sep 28, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Interventional Cardiology Primary | 207RI0011X | A99005 | 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 - Cardiovascular Disease (Cardiology) (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 16 |
|---|---|
| Services billed | 37 across 15 procedure codes |
| Paid by Medicare | $5,733 |
Part D prescriptions in 2024
| Prescriptions (claims) | 425 · 1,286 30-day fills |
|---|---|
| Patients | 125 |
| Total drug cost | $45,258 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | University of California, Geffen School of Medicine |
|---|---|
| Graduation year | 2004 |
| Medicare specialty | Cardiovascular Disease (Cardiology) |
| Secondary specialties | Internal Medicine |
Medical group
- Permanente Medical Group IncOakland, CA · 10,996 clinicians
Hospital affiliations
- Kaiser Foundation Hosp So SacramentoSacramento, CA
- Kaiser Foundation Hospital - SacramentoSacramento, CA
- Mercy General HospitalSacramento, CA
Industry payments (Open Payments)
- 2025$3,022 · 43 payments from 4 companies
- 2024$1,296 · 33 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbott Laboratories | $1,726 | 15 |
| Medtronic, Inc. | $843.14 | 20 |
| Shockwave Medical, Inc | $367.88 | 3 |
| Boston Scientific Corporation | $85.02 | 5 |
What the 2025 payments were for
- Food and Beverage$1,926 · 39 payments
- Travel and Lodging$1,095 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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