Sandy Oh, MD
NPI 1851325203ActiveIndividual· Internal Medicine· Arlington Heights, IL
Internal Medicine (MD) in Arlington Heights, Illinois, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 1995). Their prescriptions cost Medicare Part D more than their services did: $524,002 for 4,357 claims, against $83,753 paid for services in 2024. Lilly USA, LLC was the largest of 17 companies reporting payments in 2025, $1,305 in all, mostly food and beverage.
Overview
| NPI | 1851325203 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jul 10, 2006 |
| Last updated in NPPES | Mar 10, 2009 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 03609778 | 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 | 426 |
|---|---|
| Services billed | 1,372 across 22 procedure codes |
| Paid by Medicare | $83,753 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,357 · 10,386 30-day fills |
|---|---|
| Patients | 542 |
| Total drug cost | $524,002 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Internal Medicine |
Medical group
- Arlington Heights Internal Medicine SCArlington Heights, IL · 3 clinicians
Hospital affiliations
- Advocate Lutheran General HospitalPark Ridge, IL
- Alexian Brothers Medical Center 1Elk Grove Village, IL
- Northshore University Healthsystem - Evanston HospitalEvanston, IL
- Northwest Community Hospital 1Arlington Heights, IL
- Northwestern Medicine Central Dupage HospitalWinfield, IL
Other facilities
- Residential Home HealthHome health agency · Schaumburg, IL
Industry payments (Open Payments)
- 2025$1,305 · 61 payments from 17 companies
- 2024$1,120 · 59 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $201.67 | 9 |
| Amgen Inc. | $181.00 | 12 |
| Astrazeneca Pharmaceuticals LP | $144.76 | 10 |
| Phathom Pharmaceuticals, Inc. | $139.12 | 3 |
| Abbvie Inc. | $134.30 | 7 |
What the 2025 payments were for
- Food and Beverage$1,297 · 60 payments
- Education$7.96 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 93 internal medicine physicians in Arlington Heights · All internal medicine physicians in Illinois