Karen Chacko, MD
NPI 1124118807ActiveIndividual· Internal Medicine· Aurora, CO
Internal Medicine (MD) in Aurora, Colorado, trained at University of California, San Diego School of Medicine (class of 1996). Their prescriptions cost Medicare Part D more than their services did: $83,373 for 607 claims, against $8,295 paid for services in 2024.
Overview
| NPI | 1124118807 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 13, 2006 |
| Last updated in NPPES | Jan 4, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 37784 | CO |
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 (CO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 110 |
|---|---|
| Services billed | 243 across 11 procedure codes |
| Paid by Medicare | $8,295 |
Part D prescriptions in 2024
| Prescriptions (claims) | 607 · 1,481 30-day fills |
|---|---|
| Patients | 129 |
| Total drug cost | $83,373 |
| Generic share | 82% of claims |
Education and affiliations
| Medical school | University of California, San Diego School of Medicine |
|---|---|
| Graduation year | 1996 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- University Physicians IncorporatedAurora, CO · 3,215 clinicians
Hospital affiliation
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 273 internal medicine physicians in Aurora · All internal medicine physicians in Colorado