Karen A. Diefenbach, M.D.
NPI 1164658258ActiveIndividual· Surgery, Pediatric Surgery· Columbus, OH
Surgery, Pediatric Surgery (M.D.) in Columbus, Ohio, licensed in OH, with an NPI issued in June 2009. Enrolled in Medicare as practitioner - general surgery. Asensus Surgical, Inc. was the largest of 4 companies reporting payments in 2025, $14,817 in all, mostly consulting fees.
Overview
| NPI | 1164658258 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 3, 2009 |
| Last updated in NPPES | Nov 19, 2024 |
| Certified by provider | Nov 19, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery, Pediatric Surgery Primary | 2086S0120X | 35.099337 | OH |
| Colon & Rectal Surgery | 208C00000X | 35.099337 | OH |
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 - General Surgery (OH) |
|---|
Industry payments (Open Payments)
- 2025$14,817 · 14 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Asensus Surgical, Inc. | $9,075 | 8 |
| Hologic Sales and Service, LLC | $5,197 | 3 |
| Cytyc Surgical Products, LLC | $477.97 | 2 |
| Karl Storz Endoscopy-America | $66.52 | 1 |
What the 2025 payments were for
- Consulting Fee$13,100 · 2 payments
- Travel and Lodging$1,467 · 6 payments
- Food and Beverage$249.13 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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