Gretchen M. Heringhaus, AA
NPI 1891029880ActiveIndividual· Anesthesiologist Assistant· Westerville, OH
Anesthesiologist Assistant (AA) with Osu Observation Medicine, LLC and 1 other group, practicing in Westerville, Ohio. Medicare paid $18,464 for services to 161 patients in 2024. Abbvie Inc. reported $192.87 in payments in 2025, mostly food and beverage. Lists Mount Carmel New Albany Surgical Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1891029880 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | AA |
| Sole proprietor | No |
| NPI issued | Sep 24, 2009 |
| Last updated in NPPES | Jun 27, 2025 |
| Certified by provider | Jun 27, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Anesthesiologist Assistant Primary | 367H00000X | 67.000192 | 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 - Anesthesiology Assistant (OH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 161 |
|---|---|
| Services billed | 163 across 36 procedure codes |
| Paid by Medicare | $18,464 |
Education and affiliations
| Graduation year | 2009 |
|---|---|
| Medicare specialty | Anesthesiology Assistant |
Medical groups
- Osu Observation Medicine, LLCColumbus, OH · 436 clinicians
- Consultant Anesthesiologists Inc.Westerville, OH · 71 clinicians
Hospital affiliations
- Mount Carmel New Albany Surgical HospitalNew Albany, OH
- Mount Carmel St Ann'sWesterville, OH
Industry payments (Open Payments)
- 2025$192.87 · 11 payments from 1 company
- 2024$343.08 · 21 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $192.87 | 11 |
What the 2025 payments were for
- Food and Beverage$192.87 · 11 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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