John P Fruehauf, MD
NPI 1588744635ActiveIndividual· Internal Medicine, Hematology & Oncology· Orange, CA
Internal Medicine, Hematology & Oncology (MD) in Orange, California, trained at Rush Medical College of Rush University (class of 1985). Their prescriptions cost Medicare Part D more than their services did: $1,244,230 for 223 claims, against $28,855 paid for services in 2024. Glaxosmithkline, LLC. reported $19.03 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1588744635 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 16, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 000000G58826 | CA |
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 - General Surgery (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 79 |
|---|---|
| Services billed | 232 across 5 procedure codes |
| Paid by Medicare | $28,855 |
Part D prescriptions in 2024
| Prescriptions (claims) | 223 · 295 30-day fills |
|---|---|
| Patients | 41 |
| Total drug cost | $1,244,230 |
| Generic share | 65% of claims |
Education and affiliations
| Medical school | Rush Medical College of Rush University |
|---|---|
| Graduation year | 1985 |
| Medicare specialty | General Surgery |
| Secondary specialties | Medical Oncology |
| Telehealth | Offers telehealth |
Medical group
- Uc RegentsOrange, CA · 319 clinicians
Hospital affiliation
- Uci Health-OrangeOrange, CA
Industry payments (Open Payments)
- 2025$19.03 · 1 payment from 1 company
- 2024$18.00 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaxosmithkline, LLC. | $19.03 | 1 |
What the 2025 payments were for
- Food and Beverage$19.03 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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