Quick answers
- Which hospitals does Sidney A. Johnson Jr. work at?
- Medicare's official clinician data lists Sidney A. Johnson Jr. at 5 hospitals: Merit Health River Region, Merit Health Women's Hospital, Mississippi Baptist Medical Center, St Dominic-Jackson Memorial Hospital and University of Mississippi Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Sidney A. Johnson Jr. see patients?
- Medicare's clinician data lists 3 practice locations, including Jackson, MS and Vicksburg, MS. Call before your visit to confirm the address.
- What is Sidney A. Johnson Jr.'s specialty?
- Medicare lists Radiation Oncology as the primary specialty.
- Does Sidney A. Johnson Jr. accept Medicare assignment?
- Yes. Medicare's clinician data says Sidney A. Johnson Jr. 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 Sidney A. Johnson Jr.?
- (601) 373-2074, as listed in official Medicare / NPI Registry data.
- What is Sidney A. Johnson Jr.'s NPI number?
- 1497757603. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Sidney A. Johnson Jr. works
Medicare's Facility Affiliation Data lists Sidney A. Johnson Jr. at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Merit Health River RegionVicksburg, MS · Acute Care Hospital · CCN 250031
- Merit Health Women's HospitalFlowood, MS · Acute Care Hospital · CCN 250136
- Mississippi Baptist Medical CenterJackson, MS · Acute Care Hospital · CCN 250102
- St Dominic-Jackson Memorial HospitalJackson, MS · Acute Care Hospital · CCN 250048
- University of Mississippi Medical CenterJackson, MS · Acute Care Hospital · CCN 250001
Practice locations
Addresses where Sidney A. Johnson Jr. is enrolled with Medicare (CMS data updated 2026-10-02).
- 1850 Chadwick DrJackson, MS 39204 (601) 373‑2074
- 2368 Grove StVicksburg, MS 39183 (601) 638‑3005
- 2969 Curran Dr N, St. Dominic Cancer CenterJackson, MS 39216 (601) 200‑3070
Group practices
Medicare enrollment lists Sidney A. Johnson Jr. as a member of these groups (CMS data updated 2026-10-02).
- Vicksburg Clinic LLC27 clinicians in the group
- Radiation Oncology of Mississippi PA7 clinicians in the group
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in Jackson
Clinicians with the same Medicare primary specialty in Jackson, MS — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Mississippi School Of Medicine |
| Graduation year | 1984 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1497757603 |
| 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