Quick answers
- Which hospitals does Mark A. Tannenbaum work at?
- Medicare's official clinician data lists Mark A. Tannenbaum at 5 hospitals: Davis County Hospital, MercyOne Centerville Medical Center, MercyOne Des Moines Medical Center, Monroe County Hospital and Ottumwa Regional Health Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark A. Tannenbaum see patients?
- Medicare's clinician data lists 7 practice locations, including Centerville, IA, Ottumwa, IA and West Des Moines, IA. Call before your visit to confirm the address.
- What is Mark A. Tannenbaum's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty.
- Does Mark A. Tannenbaum accept Medicare assignment?
- Yes. Medicare's clinician data says Mark A. Tannenbaum 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 A. Tannenbaum?
- (641) 437-3411, as listed in official Medicare / NPI Registry data.
- What is Mark A. Tannenbaum's NPI number?
- 1033191861. 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 A. Tannenbaum works
Medicare's Facility Affiliation Data lists Mark A. Tannenbaum at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Davis County HospitalBloomfield, IA · Critical Access Hospital · CCN 161327
- MercyOne Centerville Medical CenterCenterville, IA · Critical Access Hospital · CCN 161377
- MercyOne Des Moines Medical CenterDes Moines, IA · Acute Care Hospital · CCN 160083
- Monroe County HospitalAlbia, IA · Critical Access Hospital · CCN 161342
- Ottumwa Regional Health CenterOttumwa, IA · Acute Care Hospital · CCN 160089
Practice locations
Addresses where Mark A. Tannenbaum is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 7; the Medicare profile lists all.
- 1 Saint Joseph DrCenterville, IA 52544 (641) 437‑3411
- 1001 Pennsylvania AveOttumwa, IA 52501 (641) 682‑7511
- 1005 Pennsylvania Ave, Suite 207Ottumwa, IA 52501 (641) 682‑5349
- 1755 59th PlWest Des Moines, IA 50266 (515) 358‑8000
- 1816 Philadelphia StAmes, IA 50010 (515) 232‑2500
Group practices
Medicare enrollment lists Mark A. Tannenbaum as a member of these groups (CMS data updated 2026-10-02).
- Catholic Health Initiatives-Iowa Corp113 clinicians in the group
- Ottumwa Health Group LLC26 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Iowa →
Other cardiologists in Centerville
Clinicians with the same Medicare primary specialty in Centerville, IA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1982 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1033191861 |
| 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