David Ying Foong Chiou, M.D.
NPI 1093779084ActiveIndividual· Internal Medicine· Mundelein, IL
Internal Medicine (M.D.) in Mundelein, Illinois, trained at University of Wisconsin School of Medicine (class of 1996). Their prescriptions cost Medicare Part D more than their services did: $769,011 for 9,462 claims, against $257,958 paid for services in 2024. Novo Nordisk Inc was the largest of 7 companies reporting payments in 2025, $220.46 in all, mostly food and beverage.
Overview
| NPI | 1093779084 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 14, 2006 |
| Last updated in NPPES | May 26, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 036098964 | 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 - Internal Medicine (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 292 |
|---|---|
| Services billed | 2,893 across 38 procedure codes |
| Paid by Medicare | $257,958 |
Part D prescriptions in 2024
| Prescriptions (claims) | 9,462 · 14,165 30-day fills |
|---|---|
| Patients | 443 |
| Total drug cost | $769,011 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | University of Wisconsin School of Medicine |
|---|---|
| Graduation year | 1996 |
| Medicare specialty | Internal Medicine |
Medical group
- Lake County Medical Group SCGrayslake, IL · 2 clinicians
Hospital affiliations
- Advocate Condell Medical CenterLibertyville, IL
- Northwestern Lake Forest HospitalLake Forest, IL
Other facilities
- Centerwell Home Health IIHome health agency · Buffalo Grove, IL
- Heartland Hospice (Northbrook)Hospice · Buffalo Grove, IL
- St Croix Hospice LombardHospice · Lombard, IL
- Vitas Healthcare Corporation of IllinoisHospice · Lombard, IL
- Aperion Care ElginNursing home · Elgin, IL
- Allure of ZionNursing home · Zion, IL
- Alpine Care of ZionNursing home · Zion, IL
- River View Rehab CenterNursing home · Elgin, IL
Industry payments (Open Payments)
- 2025$220.46 · 8 payments from 7 companies
- 2024$360.71 · 16 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $66.14 | 2 |
| Abbott Laboratories | $29.29 | 1 |
| E.R. Squibb & Sons, L.L.C. | $28.65 | 1 |
| Corcept Therapeutics | $27.03 | 1 |
| Axsome Therapeutics, Inc. | $24.08 | 1 |
What the 2025 payments were for
- Food and Beverage$220.46 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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