Lawrence Chihyung Ku, MD
NPI 1912439266ActiveIndividual· Internal Medicine, Gastroenterology· Oakland, CA
Internal Medicine, Gastroenterology (MD) in Oakland, California, trained at Icahn School of Medicine at Mount Sinai (class of 2017). Their prescriptions cost Medicare Part D more than their services did: $45,444 for 173 claims, against $1,979 paid for services in 2024. Abbvie Inc. reported $42.28 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1912439266 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 28, 2017 |
| Last updated in NPPES | Aug 2, 2023 |
| Certified by provider | Aug 2, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | A157723 | CA |
| Internal Medicine | 207R00000X | A157723 | 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 - Gastroenterology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 17 |
|---|---|
| Services billed | 18 across 7 procedure codes |
| Paid by Medicare | $1,979 |
Part D prescriptions in 2024
| Prescriptions (claims) | 173 · 281 30-day fills |
|---|---|
| Patients | 105 |
| Total drug cost | $45,444 |
| Generic share | 79% of claims |
Education and affiliations
| Medical school | Icahn School of Medicine at Mount Sinai |
|---|---|
| Graduation year | 2017 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical group
- Permanente Medical Group IncOakland, CA · 10,996 clinicians
Hospital affiliation
Industry payments (Open Payments)
- 2025$42.28 · 2 payments from 1 company
- 2024$26.31 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $42.28 | 2 |
What the 2025 payments were for
- Food and Beverage$42.28 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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