Quick answers
- Which hospitals does Harold H. Katz work at?
- Medicare's official clinician data lists Harold H. Katz at 5 hospitals: Abbott Northwestern Hospital, Allina United Hospital, M Health Fairview St John's Hospital, Mercy Hospital and St Croix Regional Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Harold H. Katz see patients?
- Medicare's clinician data lists 1 practice location in Annandale, MN. Call before your visit to confirm the address.
- What is Harold H. Katz's specialty?
- Medicare lists Endocrinology as the primary specialty.
- Does Harold H. Katz accept Medicare assignment?
- Yes. Medicare's clinician data says Harold H. Katz 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 Harold H. Katz offer telehealth?
- Medicare's clinician data says Harold H. Katz offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Harold H. Katz?
- (320) 682-5225, as listed in official Medicare / NPI Registry data.
- What is Harold H. Katz's NPI number?
- 1447211859. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Harold H. Katz works
Medicare's Facility Affiliation Data lists Harold H. Katz at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Abbott Northwestern HospitalMinneapolis, MN · Acute Care Hospital · CCN 240057
- Allina United HospitalSaint Paul, MN · Acute Care Hospital · CCN 240038
- M Health Fairview St John's HospitalMaplewood, MN · Acute Care Hospital · CCN 240210
- Mercy HospitalCoon Rapids, MN · Acute Care Hospital · CCN 240115
- St Croix Regional Medical CenterSaint Croix Falls, WI · Critical Access Hospital · CCN 521337
Practice locations
Addresses where Harold H. Katz is enrolled with Medicare (CMS data updated 2026-10-02).
- 440 Elm St EAnnandale, MN 55302 (320) 682‑5225
Group practices
Medicare enrollment lists Harold H. Katz as a member of this group (CMS data updated 2026-10-02).
- Allina Health System3,842 clinicians in the group
Specialties
- Endocrinologyprimary
Other endocrinologists in Annandale
Clinicians with the same Medicare primary specialty in Annandale, MN — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Mayo Medical School |
| Graduation year | 1986 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1447211859 |
| 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