Barbara A. Koewler, MD
NPI 1588695043ActiveIndividual· Obstetrics & Gynecology· Danville, IN
Obstetrics & Gynecology (MD) in Danville, Indiana, trained at Indiana University School of Medicine (class of 1989). Their prescriptions cost Medicare Part D more than their services did: $47,102 for 301 claims, against $7,098 paid for services in 2024. Mayne Pharma Commercial LLC was the largest of 11 companies reporting payments in 2025, $439.24 in all, mostly food and beverage.
Overview
| NPI | 1588695043 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 5, 2006 |
| Last updated in NPPES | Mar 8, 2021 |
| Certified by provider | Mar 8, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology Primary | 207V00000X | 01040920 | IN |
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 - Obstetrics/Gynecology (IN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 57 |
|---|---|
| Services billed | 99 across 17 procedure codes |
| Paid by Medicare | $7,098 |
Part D prescriptions in 2024
| Prescriptions (claims) | 301 · 790 30-day fills |
|---|---|
| Patients | 88 |
| Total drug cost | $47,102 |
| Generic share | 82% of claims |
Education and affiliations
| Medical school | Indiana University School of Medicine |
|---|---|
| Graduation year | 1989 |
| Medicare specialty | Obstetrics/Gynecology |
Medical group
- Hendricks County HospitalAvon, IN · 340 clinicians
Hospital affiliations
- Ascension St Vincent HospitalIndianapolis, IN
- Hendricks Regional HealthDanville, IN
Industry payments (Open Payments)
- 2025$439.24 · 24 payments from 11 companies
- 2024$404.22 · 18 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Mayne Pharma Commercial LLC | $75.03 | 6 |
| Biogen, Inc. | $70.42 | 3 |
| Sumitomo Pharma America, Inc. | $61.82 | 3 |
| Astellas Pharma US Inc | $58.12 | 3 |
| Lilly USA, LLC | $38.44 | 2 |
What the 2025 payments were for
- Food and Beverage$439.24 · 24 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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