John D. Oholleran, MD
NPI 1912007220ActiveIndividual· Surgery· Oregon City, OR
Surgery (MD) in Oregon City, Oregon, trained at University of Nebraska College of Medicine (class of 1987). Mostly services rather than prescriptions: Medicare paid $19,757 for 57 patients in 2024, with only 39 Part D claims.
Overview
| NPI | 1912007220 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 25, 2006 |
| Last updated in NPPES | Feb 2, 2024 |
| Certified by provider | Jun 6, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery Primary | 208600000X | MD215189 | OR |
| Surgery | 208600000X | 6073614 | CA |
| Surgery | 208600000X | G73614 | CA |
| Surgery | 208600000X | 036150765 | IL |
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 (CA); Practitioner - General Surgery (IA); Practitioner - General Surgery (OR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 57 |
|---|---|
| Services billed | 111 across 28 procedure codes |
| Paid by Medicare | $19,757 |
Part D prescriptions in 2024
| Prescriptions (claims) | 39 · 39 30-day fills |
|---|---|
| Patients | 33 |
| Total drug cost | $233.35 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | University of Nebraska College of Medicine |
|---|---|
| Graduation year | 1987 |
| Medicare specialty | General Surgery |
Medical group
- Providence Health and Services OregonPortland, OR · 1,433 clinicians
Hospital affiliations
- Providence Milwaukie HospitalMilwaukie, OR
- Providence Willamette Falls Medical CenterOregon City, OR
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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