Quick answers
- Which hospitals does Wallace R. Johnson work at?
- Medicare's official clinician data lists Wallace R. Johnson at 2 hospitals: University of Maryland Medical Center and University of MD Medical Center Midtown Campus. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Wallace R. Johnson see patients?
- Medicare's clinician data lists 1 practice location in Baltimore, MD. Call before your visit to confirm the address.
- What is Wallace R. Johnson's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Wallace R. Johnson accept Medicare assignment?
- Yes. Medicare's clinician data says Wallace R. Johnson 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 Wallace R. Johnson?
- (410) 328-8040, as listed in official Medicare / NPI Registry data.
- What is Wallace R. Johnson's NPI number?
- 1043253867. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Wallace R. Johnson works
Medicare's Facility Affiliation Data lists Wallace R. Johnson at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- University of Maryland Medical CenterBaltimore, MD · Acute Care Hospital · CCN 210002
- University of MD Medical Center Midtown CampusBaltimore, MD · Acute Care Hospital · CCN 210038
Practice locations
Addresses where Wallace R. Johnson is enrolled with Medicare (CMS data updated 2026-10-02).
- 22 S Green StBaltimore, MD 21201 (410) 328‑8040
Group practices
Medicare enrollment lists Wallace R. Johnson as a member of this group (CMS data updated 2026-10-02).
- University of Maryland Physicians PA404 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Baltimore
Clinicians with the same Medicare primary specialty in Baltimore, MD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Maryland School Of Medicine |
| Graduation year | 1986 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1043253867 |
| 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