Quick answers
- Which hospitals does Mark J. Corso work at?
- Medicare's official clinician data lists Mark J. Corso at 2 hospitals: Christiana Hospital and Union Hospital of Cecil County. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark J. Corso see patients?
- Medicare's clinician data lists 2 practice locations, including Newark, DE. Call before your visit to confirm the address.
- What is Mark J. Corso's specialty?
- Medicare lists Gastroenterology as the primary specialty, and also Internal Medicine.
- Does Mark J. Corso accept Medicare assignment?
- Yes. Medicare's clinician data says Mark J. Corso 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 J. Corso?
- (302) 738-5300, as listed in official Medicare / NPI Registry data.
- What is Mark J. Corso's NPI number?
- 1578635090. 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 J. Corso works
Medicare's Facility Affiliation Data lists Mark J. Corso at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Christiana HospitalNewark, DE · Acute Care Hospital · CCN 080001
- Union Hospital of Cecil CountyElkton, MD · Acute Care Hospital · CCN 210032
Practice locations
Addresses where Mark J. Corso is enrolled with Medicare (CMS data updated 2026-10-02).
- 4745 Ogletown Stanton RdNewark, DE 19713 (302) 738‑5300
- 4755 Ogletown Stanton RdNewark, DE 19718 (302) 733‑1000
Group practices
Medicare enrollment lists Mark J. Corso as a member of these groups (CMS data updated 2026-10-02).
- Christiana Care Health Services Inc1,483 clinicians in the group
- Delaware Center for Digestive Care LLC66 clinicians in the group
Specialties
- Gastroenterologyprimary
- Internal Medicinealso
Other gastroenterologists in Newark
Clinicians with the same Medicare primary specialty in Newark, DE — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Hahnemann University College Of Medicine |
| Graduation year | 1997 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1578635090 |
| 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