Dr. John W. Frey, DO
Pulmonology (Pulmonary Disease Physician)
- Medicare participating
At a glance
- Years since graduation
- 9
- In the NPI registry since
- 2017
- Medicare patients seen, 2024
- 396
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. What an NPI is
Education and training
- 2017Registered with an NPI (national billing number; not a license date)
Medicare’s Care Compare data doesn’t list this clinician’s medical school. Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Pulmonary Disease Physician primary
WI license 81144 · KS license 94-09289 -
Critical Care Medicine (Internal Medicine) Physician
WI license 81144 -
Internal Medicine Physician
KS license 94-09289
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Mayo Clinic Hospital Rochester Rochester, MN
- Mayo Clinic Health System-Franciscan Medical Center Inc La Crosse, WI
- Mayo Clinic Hlth Systm Franciscan Hlthcare Sparta Sparta, WI
- Crossing Rivers Health Medical Center Prairie Du Chien, WI
- Winnmed Decorah, IA
Medical groups
- Mayo Clinic Health System-Southwest Wisconsin Region Inc (534 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 396
- Services billed
- 948
- Patients’ average age
- 73
| Service | Times | Patients |
|---|---|---|
| Critical care, first 30-74 minutes | 53 | 32 |
| Established patient office or other outpatient visit, 30-39 minutes | 44 | 41 |
| Test to examine how well the lungs exchange gases | 36 | 36 |
| Test to determine lung volumes using sensors | 34 | 34 |
| Test to measure expiratory airflow and volume changes before and after medication administration | 28 | 28 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 24 | 23 |
| New patient office or other outpatient visit, 45-59 minutes | 20 | 20 |
| New patient office or other outpatient visit, 30-44 minutes | 14 | 14 |
| Established patient office or other outpatient visit, 40-54 minutes | 12 | 12 |
| Test to measure expiratory airflow and volume | 11 | 11 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Stiolto Respimat (tiotropium br/olodaterol hcl) Other prescribers in La Crosse, WI | 84 |
| Breztri Aerosphere (budesonide/glycopyr/formoterol) Other prescribers in La Crosse, WI | 80 |
| Albuterol Sulfate Hfa (albuterol sulfate) Other prescribers in La Crosse, WI | 74 |
| Trelegy Ellipta (fluticasone/umeclidin/vilanter) Other prescribers in La Crosse, WI | 65 |
| Fluticasone-Salmeterol (fluticasone propion/salmeterol) Other prescribers in La Crosse, WI | 52 |
| Prednisone Other prescribers in La Crosse, WI | 47 |
| Azithromycin Other prescribers in La Crosse, WI | 43 |
| Breo Ellipta (fluticasone/vilanterol) Other prescribers in La Crosse, WI | 41 |
| Ventolin Hfa (albuterol sulfate) Other prescribers in La Crosse, WI | 26 |
| Bevespi Aerosphere (glycopyrrolate/formoterol fum) Other prescribers in La Crosse, WI | 24 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.