Quick answers
- Which hospitals does Arjun Singh work at?
- Medicare's official clinician data lists Arjun Singh at 4 hospitals: Alton Memorial Hospital, Anderson Hospital, Memorial Hospital and Missouri Baptist Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Arjun Singh see patients?
- Medicare's clinician data lists 9 practice locations, including Alton, IL, Shiloh, IL and O Fallon, MO. Call before your visit to confirm the address.
- What is Arjun Singh's specialty?
- Medicare lists Hospitalist as the primary specialty, and also Internal Medicine.
- Does Arjun Singh accept Medicare assignment?
- Yes. Medicare's clinician data says Arjun Singh 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 Arjun Singh?
- (618) 463-7240, as listed in official Medicare / NPI Registry data.
- What is Arjun Singh's NPI number?
- 1780619957. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Arjun Singh works
Medicare's Facility Affiliation Data lists Arjun Singh at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Alton Memorial HospitalAlton, IL · Acute Care Hospital · CCN 140002
- Anderson HospitalMaryville, IL · Acute Care Hospital · CCN 140289
- Memorial HospitalBelleville, IL · Acute Care Hospital · CCN 140185
- Missouri Baptist Medical CenterSaint Louis, MO · Acute Care Hospital · CCN 260108
Practice locations
Addresses where Arjun Singh is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 9; the Medicare profile lists all.
- 1 Memorial DrAlton, IL 62002 (618) 463‑7240
- 1404 Cross StShiloh, IL 62269 (618) 607‑3055
- 1404 Cross St, Suite 2940Shiloh, IL 62269 (618) 607‑3700
- 1418 Cross St, Suite 350Shiloh, IL 62269 (618) 607‑3900
- 2630 Hwy KO Fallon, MO 63368 (636) 240‑5454
Group practices
Medicare enrollment lists Arjun Singh as a member of these groups (CMS data updated 2026-10-02).
- Physician Groups LC521 clinicians in the group
- Fairview Heights Medical Group SC444 clinicians in the group
- Midwest Inpatient Anderson Health Inc46 clinicians in the group
Specialties
- Hospitalistprimary
- Internal Medicinealso
Other hospitalists in Alton
Clinicians with the same Medicare primary specialty in Alton, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1985 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1780619957 |
| 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