John William Frey, DO
NPI 1538600754ActiveIndividual· Internal Medicine, Pulmonary Disease· La Crosse, WI
Internal Medicine, Pulmonary Disease (DO) with Mayo Clinic Health System-Southwest Wisconsin Region Inc, practicing in La Crosse, Wisconsin. Their prescriptions cost Medicare Part D more than their services did: $336,230 for 739 claims, against $54,587 paid for services in 2024. Intuitive Surgical, Inc. reported $3,073 in payments in 2024, mostly education. Lists Crossing Rivers Health Medical Center and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1538600754 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Mar 20, 2017 |
| Last updated in NPPES | Sep 8, 2023 |
| Certified by provider | Sep 8, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Pulmonary Disease Primary | 207RP1001X | 81144 | WI |
| Internal Medicine, Pulmonary Disease | 207RP1001X | 94-09289 | KS |
| Internal Medicine | 207R00000X | 94-09289 | KS |
| Internal Medicine, Critical Care Medicine | 207RC0200X | 81144 | WI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Pulmonary Disease (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 396 |
|---|---|
| Services billed | 948 across 40 procedure codes |
| Paid by Medicare | $54,587 |
Part D prescriptions in 2024
| Prescriptions (claims) | 739 · 925 30-day fills |
|---|---|
| Patients | 161 |
| Total drug cost | $336,230 |
| Generic share | 42% of claims |
Education and affiliations
| Graduation year | 2017 |
|---|---|
| Medicare specialty | Pulmonary Disease |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Mayo Clinic Health System-Southwest Wisconsin Region IncLa Crosse, WI · 534 clinicians
Hospital affiliations
- Crossing Rivers Health Medical CenterPrairie Du Chien, WI
- Mayo Clinic Health System-Franciscan Medical Center IncLa Crosse, WI
- Mayo Clinic Hlth Systm Franciscan Hlthcare SpartaSparta, WI
- Mayo Clinic Hospital RochesterRochester, MN
- WinnmedDecorah, IA
Industry payments (Open Payments)
- 2024$3,073 · 6 payments from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Intuitive Surgical, Inc. | $3,073 | 6 |
What the 2024 payments were for
- Education$2,500 · 1 payment
- Travel and Lodging$473.86 · 3 payments
- Food and Beverage$98.82 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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