Chong H. Ahn, MD
NPI 1871585216ActiveIndividual· Internal Medicine· Arlington Heights, IL
Internal Medicine (MD) with Stat Cardiologist Inc, practicing in Arlington Heights, Illinois. Their prescriptions cost Medicare Part D more than their services did: $108,674 for 1,569 claims, against $28,115 paid for services in 2024. Phathom Pharmaceuticals, Inc. reported $18.15 in payments in 2025, mostly food and beverage. Lists Northwest Community Hospital 1 as a hospital affiliation.
Overview
| NPI | 1871585216 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Aug 22, 2005 |
| Last updated in NPPES | Nov 7, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 036-051567 | IL |
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 - Internal Medicine (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 68 |
|---|---|
| Services billed | 410 across 8 procedure codes |
| Paid by Medicare | $28,115 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,569 · 4,023 30-day fills |
|---|---|
| Patients | 139 |
| Total drug cost | $108,674 |
| Generic share | 91% of claims |
Education and affiliations
| Graduation year | 1968 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Stat Cardiologist IncSchaumburg, IL · 26 clinicians
Hospital affiliation
- Northwest Community Hospital 1Arlington Heights, IL
Industry payments (Open Payments)
- 2025$18.15 · 1 payment from 1 company
- 2024$22.09 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Phathom Pharmaceuticals, Inc. | $18.15 | 1 |
What the 2025 payments were for
- Food and Beverage$18.15 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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