Quick answers
- Which hospitals does John L. Visconti work at?
- Medicare's official clinician data lists John L. Visconti at 5 hospitals: Alton Memorial Hospital, Anderson Hospital, Barnes Jewish Hospital, Gateway Regional Medical Center and Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John L. Visconti see patients?
- Medicare's clinician data lists 5 practice locations, including Shiloh, IL, Edwardsville, IL and Belleville, IL. Call before your visit to confirm the address.
- What is John L. Visconti's specialty?
- Medicare lists Hematology/Oncology as the primary specialty.
- Does John L. Visconti accept Medicare assignment?
- Yes. Medicare's clinician data says John L. Visconti 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.
- Does John L. Visconti offer telehealth?
- Medicare's clinician data says John L. Visconti offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for John L. Visconti?
- (800) 647-2098, as listed in official Medicare / NPI Registry data.
- What is John L. Visconti's NPI number?
- 1033167846. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John L. Visconti works
Medicare's Facility Affiliation Data lists John L. Visconti 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
- Barnes Jewish HospitalSaint Louis, MO · Acute Care Hospital · CCN 260032
- Gateway Regional Medical CenterGranite City, IL · Acute Care Hospital · CCN 140125
- Memorial HospitalBelleville, IL · Acute Care Hospital · CCN 140185
Practice locations
Addresses where John L. Visconti is enrolled with Medicare (CMS data updated 2026-10-02).
- 1404 Cross StShiloh, IL 62269
- 2122 Troy RdEdwardsville, IL 62025
- 4500 Memorial DrBelleville, IL 62226
- 5201 Mid America PlzSaint Louis, MO 63129
- 5225 Mid America PlzSaint Louis, MO 63129 (800) 647‑2098
Group practices
Medicare enrollment lists John L. Visconti as a member of these groups (CMS data updated 2026-10-02).
- Washington University3,029 clinicians in the group
- Washington University Physicians in Illinois Inc175 clinicians in the group
Specialties
- Hematology/Oncologyprimary
Other hematologist-oncologists in Illinois
Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Kansas City University Of Med & Biosciences, College Of Osteo Med |
| Graduation year | 1990 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1033167846 |
| 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