Jason S. So, DO
NPI 1508078643ActiveIndividual· Family Medicine· Lake Geneva, WI
Family Medicine (DO) with Mercy Health System Corporation, practicing in Lake Geneva, Wisconsin. Their prescriptions cost Medicare Part D more than their services did: $884,936 for 10,670 claims, against $184,917 paid for services in 2024. Alkermes, Inc. was the largest of 2 companies reporting payments in 2025, $35.87 in all, mostly food and beverage. Lists Mercy Health System Corp as a hospital affiliation.
Overview
| NPI | 1508078643 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | May 3, 2007 |
| Last updated in NPPES | Aug 29, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 63015-21 | WI |
| Family Medicine | 207Q00000X | 036119919 | IL |
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 - Family Practice (IL); Practitioner - Family Practice (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 398 |
|---|---|
| Services billed | 3,211 across 42 procedure codes |
| Paid by Medicare | $184,917 |
Part D prescriptions in 2024
| Prescriptions (claims) | 10,670 · 23,130 30-day fills |
|---|---|
| Patients | 647 |
| Total drug cost | $884,936 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 2005 |
|---|---|
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Medical group
- Mercy Health System CorporationJanesville, WI · 753 clinicians
Hospital affiliation
- Mercy Health System CorpJanesville, WI
Other facilities
- 2 Sisters Home Healthcare IncHome health agency · Rockford, IL
- Mercyhealth at HomeHome health agency · Janesville, WI
Industry payments (Open Payments)
- 2025$35.87 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alkermes, Inc. | $19.89 | 1 |
| Glaxosmithkline, LLC. | $15.98 | 1 |
What the 2025 payments were for
- Food and Beverage$35.87 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 23 family medicine physicians in Lake Geneva · All family medicine physicians in Wisconsin