Quick answers
- Which hospitals does John Haley work at?
- Medicare's official clinician data lists John Haley at 5 hospitals: Mayo Clinic Health System - Fairmont, Mayo Clinic Health System - Mankato, Mayo Clinic Health System - Waseca, Mayo Clinic Health System New Prague and Mayo Clinic Health System St. James. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John Haley see patients?
- Medicare's clinician data lists 6 practice locations, including Mankato, MN, Saint James, MN and Owatonna, MN. Call before your visit to confirm the address.
- What is John Haley's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty.
- Does John Haley accept Medicare assignment?
- Yes. Medicare's clinician data says John Haley 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.
- What is the phone number for John Haley?
- (507) 625-4031, as listed in official Medicare / NPI Registry data.
- What is John Haley's NPI number?
- 1912983834. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John Haley works
Medicare's Facility Affiliation Data lists John Haley at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mayo Clinic Health System - FairmontFairmont, MN · Acute Care Hospital · CCN 240166
- Mayo Clinic Health System - MankatoMankato, MN · Acute Care Hospital · CCN 240093
- Mayo Clinic Health System - WasecaWaseca, MN · Critical Access Hospital · CCN 241345
- Mayo Clinic Health System New PragueNew Prague, MN · Critical Access Hospital · CCN 241361
- Mayo Clinic Health System St. JamesSt James, MN · Critical Access Hospital · CCN 241333
Practice locations
Addresses where John Haley is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 1025 Marsh StMankato, MN 56001 (507) 625‑4031
- 1101 Moulton and Parsons DrSaint James, MN 56081 (507) 375‑3261
- 2200 NW 26th StOwatonna, MN 55060 (507) 451‑1120
- 2250 NW 26th StOwatonna, MN 55060 (507) 451‑3850
- 404 W Fountain StAlbert Lea, MN 56007 (507) 373‑2384
Group practices
Medicare enrollment lists John Haley as a member of these groups (CMS data updated 2026-10-02).
- Mayo Clinic Health System-Southwest Minnesota Region661 clinicians in the group
- Mayo Clinic Health System-Southeast Minnesota Region551 clinicians in the group
- Mayo Clinic Health System-Fairmont155 clinicians in the group
- Mayo Clinic Health System-St James76 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Minnesota →
Other cardiologists in Mankato
Clinicians with the same Medicare primary specialty in Mankato, MN — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Minnesota Medical School |
| Graduation year | 1994 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1912983834 |
| 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