Olga Zarkh, MD
NPI 1043282320ActiveIndividual· Internal Medicine· Buffalo Grove, IL
Internal Medicine (MD) in Buffalo Grove, Illinois, licensed in IL, with an NPI issued in February 2006. Their prescriptions cost Medicare Part D more than their services did: $1,003,490 for 10,250 claims, against $267,016 paid for services in 2024. Lists Advocate Condell Medical Center and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1043282320 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 2, 2006 |
| Last updated in NPPES | Jan 18, 2024 |
| Certified by provider | Jan 18, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 36-109468 | 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 | 259 |
|---|---|
| Services billed | 5,938 across 66 procedure codes |
| Paid by Medicare | $267,016 |
Part D prescriptions in 2024
| Prescriptions (claims) | 10,250 · 13,596 30-day fills |
|---|---|
| Patients | 240 |
| Total drug cost | $1,003,490 |
| Generic share | 80% of claims |
Education and affiliations
| Graduation year | 1987 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Hospital affiliations
- Advocate Condell Medical CenterLibertyville, IL
- Advocate Lutheran General HospitalPark Ridge, IL
- Northshore University Healthsystem - Evanston HospitalEvanston, IL
- Northwest Community Hospital 1Arlington Heights, IL
- Northwestern Medicine Central Dupage HospitalWinfield, IL
Other facilities
- Advanced Home Health Services, IncHome health agency · Northbrook, IL
- Americhoice Health Care, IncHome health agency · Northbrook, IL
- Elite Home Health Care, IncHome health agency · Northbrook, IL
- Vita Health Care, IncHome health agency · Northbrook, IL
- Wellcare Home Health, IncHome health agency · Northbrook, IL
- Avantara Long GroveNursing home · Long Grove, IL
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 35 internal medicine physicians in Buffalo Grove · All internal medicine physicians in Illinois