Quick answers
- Which hospitals does Gregory A. Tester work at?
- Medicare's official clinician data lists Gregory A. Tester at 5 hospitals: Sauk Prairie Hospital, UnityPoint Health - Meriter, University of WI Hospitals & Clinics Authority, Upland Hills Health and UW Health. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gregory A. Tester see patients?
- Medicare's clinician data lists 2 practice locations, including Madison, WI. Call before your visit to confirm the address.
- What is Gregory A. Tester's specialty?
- Medicare lists Interventional Cardiology as the primary specialty, and also Cardiovascular Disease (Cardiology).
- Does Gregory A. Tester accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory A. Tester accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Gregory A. Tester offer telehealth?
- Medicare's clinician data says Gregory A. Tester offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Gregory A. Tester?
- (608) 287-2000, as listed in official Medicare / NPI Registry data.
- What is Gregory A. Tester's NPI number?
- 1477783603. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gregory A. Tester works
Medicare's Facility Affiliation Data lists Gregory A. Tester at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Sauk Prairie HospitalPrairie Du Sac, WI · Acute Care Hospital · CCN 520095
- UnityPoint Health - MeriterMadison, WI · Acute Care Hospital · CCN 520089
- University of WI Hospitals & Clinics AuthorityMadison, WI · Acute Care Hospital · CCN 520098
- Upland Hills HealthDodgeville, WI · Critical Access Hospital · CCN 521352
- UW HealthRockford, IL · Acute Care Hospital · CCN 140228
Practice locations
Addresses where Gregory A. Tester is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 S Park StMadison, WI 53715 (608) 287‑2000
- 600 Highland AveMadison, WI 53792 (608) 263‑6400
Group practices
Medicare enrollment lists Gregory A. Tester as a member of this group (CMS data updated 2026-10-02).
- University of Wisconsin Medical Foundation Inc2,553 clinicians in the group
Specialties
Other interventional cardiologists in Wisconsin
Clinicians with the same Medicare primary specialty in Wisconsin — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Southern Illinois University School Of Medicine |
| Graduation year | 2009 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1477783603 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians