Quick answers
- Where does Mark Borenstein see patients?
- Medicare's clinician data lists 2 practice locations, including Florissant, MO and Mishawaka, IN. Call before your visit to confirm the address.
- What is Mark Borenstein's specialty?
- Medicare lists Interventional Radiology as the primary specialty.
- Does Mark Borenstein accept Medicare assignment?
- Yes. Medicare's clinician data says Mark Borenstein 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 Borenstein?
- (314) 830-3841, as listed in official Medicare / NPI Registry data.
- What is Mark Borenstein's NPI number?
- 1205891140. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Mark Borenstein is enrolled with Medicare (CMS data updated 2026-10-02).
- 201 Dunn RdFlorissant, MO 63031 (314) 830‑3841
- 250 E Day Rd, Suite 300Mishawaka, IN 46545 (574) 968‑0283
Group practices
Medicare enrollment lists Mark Borenstein as a member of these groups (CMS data updated 2026-10-02).
- Nephrology Physicians, LLC11 clinicians in the group
- Fresenius Vascular Care St Louis LLC3 clinicians in the group
Specialties
- Interventional Radiologyprimary
Other interventional radiologists in Missouri
Clinicians with the same Medicare primary specialty in Missouri — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | State University Of New York Downstate Medical Center |
| Graduation year | 1983 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1205891140 |
| 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
- 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