Quick answers
- Which hospitals does Mark L. Grim work at?
- Medicare's official clinician data lists Mark L. Grim at 4 hospitals: Essentia Health Duluth, Essentia Health St Mary's Medical Center, North Memorial Health Hospital and St Marys Hospital Superior. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark L. Grim see patients?
- Medicare's clinician data lists 6 practice locations, including Virginia, MN, Superior, WI and Duluth, MN. Call before your visit to confirm the address.
- What is Mark L. Grim's specialty?
- Medicare lists Anesthesiology as the primary specialty.
- Does Mark L. Grim accept Medicare assignment?
- Yes. Medicare's clinician data says Mark L. Grim 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 Mark L. Grim?
- (218) 741-0150, as listed in official Medicare / NPI Registry data.
- What is Mark L. Grim's NPI number?
- 1609843911. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark L. Grim works
Medicare's Facility Affiliation Data lists Mark L. Grim at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Essentia Health DuluthDuluth, MN · Acute Care Hospital · CCN 240019
- Essentia Health St Mary's Medical CenterDuluth, MN · Acute Care Hospital · CCN 240002
- North Memorial Health HospitalRobbinsdale, MN · Acute Care Hospital · CCN 240001
- St Marys Hospital SuperiorSuperior, WI · Critical Access Hospital · CCN 521329
Practice locations
Addresses where Mark L. Grim is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 1101 9th St NVirginia, MN 55792 (218) 741‑0150
- 3500 Tower AveSuperior, WI 54880 (715) 395‑5454
- 400 E 3rd StDuluth, MN 55805 (218) 786‑8364
- 402 E 2nd StDuluth, MN 55805 (218) 786‑4000
- 502 E 2nd StDuluth, MN 55805
Group practices
Medicare enrollment lists Mark L. Grim as a member of this group (CMS data updated 2026-10-02).
- The Duluth Clinic Ltd1,144 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Virginia
Clinicians with the same Medicare primary specialty in Virginia, MN — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Minnesota Medical School |
| Graduation year | 2000 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1609843911 |
| 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