Andrew Yong-Woo Park, M.D.
NPI 1427113729ActiveIndividual· Internal Medicine· Festus, MO
Internal Medicine (M.D.) with Mercy Clinic Adult Hospitalists Jefferson LLC, practicing in Festus, Missouri. In 2024 Medicare paid $30,140 for 217 patients, and Part D covered 468 of their prescriptions, 85% of them generic. Bayer Healthcare Pharmaceuticals Inc. was the largest of 3 companies reporting payments in 2025, $57.29 in all, mostly food and beverage. Lists Mercy Hospital Jefferson as a hospital affiliation.
Overview
| NPI | 1427113729 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Dec 27, 2006 |
| Last updated in NPPES | Jul 21, 2021 |
| Certified by provider | Jul 21, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 2021015735 | MO |
| Internal Medicine | 207R00000X | 047900 | CT |
| Internal Medicine | 207R00000X | RT1630 | NH |
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 - Internal Medicine (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 217 |
|---|---|
| Services billed | 475 across 10 procedure codes |
| Paid by Medicare | $30,140 |
Part D prescriptions in 2024
| Prescriptions (claims) | 468 · 524 30-day fills |
|---|---|
| Patients | 210 |
| Total drug cost | $32,207 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 2006 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Mercy Clinic Adult Hospitalists Jefferson LLCFestus, MO · 55 clinicians
Hospital affiliation
- Mercy Hospital JeffersonCrystal City, MO
Industry payments (Open Payments)
- 2025$57.29 · 3 payments from 3 companies
- 2024$21.55 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Bayer Healthcare Pharmaceuticals Inc. | $27.02 | 1 |
| Zoll Services LLC (A/K/A Zoll Lifecor Corp) | $16.58 | 1 |
| Amgen Inc. | $13.69 | 1 |
What the 2025 payments were for
- Food and Beverage$57.29 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 24 internal medicine physicians in Festus · All internal medicine physicians in Missouri