Dayoung Ko, MD
NPI 1336601822ActiveIndividual· Dermatology· Novi, MI
Dermatology (MD) in Novi, Michigan, trained at Duke University School of Medicine (class of 2019). Their prescriptions cost Medicare Part D more than their services did: $93,703 for 518 claims, against $43,293 paid for services in 2024. Abbvie Inc. was the largest of 22 companies reporting payments in 2025, $2,530 in all, mostly food and beverage.
Overview
| NPI | 1336601822 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 3, 2019 |
| Last updated in NPPES | Dec 19, 2023 |
| Certified by provider | Dec 19, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology Primary | 207N00000X | 4301509209 | MI |
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 - Dermatology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 176 |
|---|---|
| Services billed | 812 across 55 procedure codes |
| Paid by Medicare | $43,293 |
Part D prescriptions in 2024
| Prescriptions (claims) | 518 · 570 30-day fills |
|---|---|
| Patients | 212 |
| Total drug cost | $93,703 |
| Generic share | 95% of claims |
Education and affiliations
| Medical school | Duke University School of Medicine |
|---|---|
| Graduation year | 2019 |
| Medicare specialty | Dermatology |
Medical group
- Golden State Dermatology Associates, Inc.Saint Helena, CA · 125 clinicians
Industry payments (Open Payments)
- 2025$2,530 · 127 payments from 22 companies
- 2024$1,707 · 78 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $388.25 | 15 |
| Janssen Biotech, Inc. | $334.74 | 27 |
| Galderma Laboratories, L.P. | $289.32 | 16 |
| Sun Pharmaceutical Industries Inc. | $277.67 | 12 |
| E.R. Squibb & Sons, L.L.C. | $246.40 | 14 |
What the 2025 payments were for
- Food and Beverage$2,351 · 125 payments
- Education$178.99 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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