Quick answers
- Which hospitals does Robert W. Ross Jr. work at?
- Medicare's official clinician data lists Robert W. Ross Jr. at 2 hospitals: Johns Hopkins Howard County Medical Center and The Johns Hopkins Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Robert W. Ross Jr. see patients?
- Medicare's clinician data lists 1 practice location in Ellicott City, MD. Call before your visit to confirm the address.
- What is Robert W. Ross Jr.'s specialty?
- Medicare lists Infectious Disease as the primary specialty.
- Does Robert W. Ross Jr. accept Medicare assignment?
- Yes. Medicare's clinician data says Robert W. Ross 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 Robert W. Ross Jr.?
- (410) 418-8550, as listed in official Medicare / NPI Registry data.
- What is Robert W. Ross Jr.'s NPI number?
- 1700999745. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Robert W. Ross Jr. works
Medicare's Facility Affiliation Data lists Robert W. Ross Jr. at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Johns Hopkins Howard County Medical CenterColumbia, MD · Acute Care Hospital · CCN 210048
- The Johns Hopkins HospitalBaltimore, MD · Acute Care Hospital · CCN 210009
Practice locations
Addresses where Robert W. Ross Jr. is enrolled with Medicare (CMS data updated 2026-10-02).
- 2850 N Ridge Rd, 102 Infectious Disease AssociatesEllicott City, MD 21043 (410) 418‑8550
Group practices
Medicare enrollment lists Robert W. Ross Jr. as a member of this group (CMS data updated 2026-10-02).
- Johns Hopkins Regional Physicians LLC84 clinicians in the group
Specialties
- Infectious Diseaseprimary
Other infectious disease doctors in Ellicott City
Clinicians with the same Medicare primary specialty in Ellicott City, MD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Oregon Health Sciences University School Of Medicine |
| Graduation year | 1997 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1700999745 |
| 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