Quick answers
- Which hospitals does Gregory K. Hartig work at?
- Medicare's official clinician data lists Gregory K. Hartig at 5 hospitals: Beloit Health System, The Monroe Clinic, UnityPoint Health - Meriter, University of WI Hospitals & Clinics Authority and UW Health. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gregory K. Hartig see patients?
- Medicare's clinician data lists 1 practice location in Prairie Du Sac, WI. Call before your visit to confirm the address.
- What is Gregory K. Hartig's specialty?
- Medicare lists Otolaryngology as the primary specialty.
- Does Gregory K. Hartig accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory K. Hartig 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 K. Hartig offer telehealth?
- Medicare's clinician data says Gregory K. Hartig offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Gregory K. Hartig?
- (608) 643-6060, as listed in official Medicare / NPI Registry data.
- What is Gregory K. Hartig's NPI number?
- 1386608966. 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 K. Hartig works
Medicare's Facility Affiliation Data lists Gregory K. Hartig at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Beloit Health SystemBeloit, WI · Acute Care Hospital · CCN 520100
- The Monroe ClinicMonroe, WI · Acute Care Hospital · CCN 520028
- UnityPoint Health - MeriterMadison, WI · Acute Care Hospital · CCN 520089
- University of WI Hospitals & Clinics AuthorityMadison, WI · Acute Care Hospital · CCN 520098
- UW HealthRockford, IL · Acute Care Hospital · CCN 140228
Practice locations
Addresses where Gregory K. Hartig is enrolled with Medicare (CMS data updated 2026-10-02).
- 250 26th St, Suite 120Prairie Du Sac, WI 53578 (608) 643‑6060
Group practices
Medicare enrollment lists Gregory K. Hartig as a member of this group (CMS data updated 2026-10-02).
- University of Wisconsin Medical Foundation Inc2,553 clinicians in the group
Specialties
- Otolaryngologyprimary
Other ENT doctors in Wisconsin
Clinicians with the same Medicare primary specialty in Wisconsin — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Michigan Medical School |
| Graduation year | 1988 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1386608966 |
| 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