Andrew H. Ko, MD
NPI 1851355853ActiveIndividual· Internal Medicine, Medical Oncology· San Francisco, CA
Internal Medicine, Medical Oncology (MD) in San Francisco, California, trained at Johns Hopkins University School of Medicine (class of 1995). Their prescriptions cost Medicare Part D more than their services did: $278,783 for 377 claims, against $86,986 paid for services in 2024. Partner Therapeutics, Inc. was the largest of 6 companies reporting payments in 2025, $21,744 in all, mostly consulting fees.
Overview
| NPI | 1851355853 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 14, 2006 |
| Last updated in NPPES | Jul 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | A65880 | CA |
| Internal Medicine | 207R00000X | A65880 | 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 - Medical Oncology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 297 |
|---|---|
| Services billed | 2,428 across 32 procedure codes |
| Paid by Medicare | $86,986 |
Part D prescriptions in 2024
| Prescriptions (claims) | 377 · 438 30-day fills |
|---|---|
| Patients | 66 |
| Total drug cost | $278,783 |
| Generic share | 82% of claims |
Education and affiliations
| Medical school | Johns Hopkins University School of Medicine |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Medical Oncology |
| Secondary specialties | Hematology/Oncology, Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- University of California San FranciscoSan Francisco, CA · 1,839 clinicians
- UCSF Medical Group Business ServicesSan Francisco, CA · 1,598 clinicians
Hospital affiliations
- UCSF Health St. Mary's HospitalSan Francisco, CA
- UCSF Medical CenterSan Francisco, CA
Industry payments (Open Payments)
- 2025$21,744 · 25 payments from 6 companies
- 2024$2,676 · 11 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Partner Therapeutics, Inc. | $7,944 | 15 |
| Jazz Pharmaceuticals Inc. | $4,944 | 1 |
| Corcept Therapeutics | $3,865 | 4 |
| Gilead Sciences, Inc. | $2,540 | 1 |
| Pfizer Inc. | $1,500 | 1 |
What the 2025 payments were for
- Consulting Fee$13,109 · 3 payments
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$5,175 · 2 payments
- Travel and Lodging$2,502 · 11 payments
- Food and Beverage$958.01 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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