Quick answers
- Which hospitals does Mark D. Fleming work at?
- Medicare's official clinician data lists Mark D. Fleming at 5 hospitals: Avera Heart Hospital of South Dakota, Avera McKennan Hospital & University Health Center, Lakes Regional Healthcare, Prairie Lakes Healthcare System, Inc and Spencer Municipal Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark D. Fleming see patients?
- Medicare's clinician data lists 4 practice locations, including Spencer, IA and Sioux Falls, SD. Call before your visit to confirm the address.
- What is Mark D. Fleming's specialty?
- Medicare lists Vascular Surgery as the primary specialty.
- Does Mark D. Fleming accept Medicare assignment?
- Yes. Medicare's clinician data says Mark D. Fleming 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 D. Fleming?
- (712) 264-3500, as listed in official Medicare / NPI Registry data.
- What is Mark D. Fleming's NPI number?
- 1841255932. 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 D. Fleming works
Medicare's Facility Affiliation Data lists Mark D. Fleming at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Avera Heart Hospital of South DakotaSioux Falls, SD · Acute Care Hospital · CCN 430095
- Avera McKennan Hospital & University Health CenterSioux Falls, SD · Acute Care Hospital · CCN 430016
- Lakes Regional HealthcareSpirit Lake, IA · Acute Care Hospital · CCN 160124
- Prairie Lakes Healthcare System, IncWatertown, SD · Acute Care Hospital · CCN 430005
- Spencer Municipal HospitalSpencer, IA · Acute Care Hospital · CCN 160112
Practice locations
Addresses where Mark D. Fleming is enrolled with Medicare (CMS data updated 2026-10-02).
- 116 E 10th St, Suite 101Spencer, IA 51301 (712) 264‑3500
- 1325 S Cliff AveSioux Falls, SD 57105
- 4500 W 69th StSioux Falls, SD 57108
- 4520 W 69th StSioux Falls, SD 57108 (605) 977‑5000
Group practices
Medicare enrollment lists Mark D. Fleming as a member of this group (CMS data updated 2026-10-02).
- Heart Hospital of South Dakota LLC67 clinicians in the group
Specialties
- Vascular Surgeryprimary
Other vascular surgeons in Iowa
Clinicians with the same Medicare primary specialty in Iowa — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Arizona College Of Medicine |
| Graduation year | 2003 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1841255932 |
| 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