Quick answers
- Which hospitals does Mohammad S. Waris work at?
- Medicare's official clinician data lists Mohammad S. Waris at 4 hospitals: Inova Alexandria Hospital, Inova Fair Oaks Hospital, Inova Fairfax Hospital and Meritus Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mohammad S. Waris see patients?
- Medicare's clinician data lists 8 practice locations, including Hagerstown, MD, Largo, MD and Washington, DC. Call before your visit to confirm the address.
- What is Mohammad S. Waris's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Hospitalist.
- Does Mohammad S. Waris accept Medicare assignment?
- Yes. Medicare's clinician data says Mohammad S. Waris 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 Mohammad S. Waris?
- (301) 790-8000, as listed in official Medicare / NPI Registry data.
- What is Mohammad S. Waris's NPI number?
- 1427373638. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mohammad S. Waris works
Medicare's Facility Affiliation Data lists Mohammad S. Waris at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Inova Alexandria HospitalAlexandria, VA · Acute Care Hospital · CCN 490040
- Inova Fair Oaks HospitalFairfax, VA · Acute Care Hospital · CCN 490101
- Inova Fairfax HospitalFalls Church, VA · Acute Care Hospital · CCN 490063
- Meritus Medical CenterHagerstown, MD · Acute Care Hospital · CCN 210001
Practice locations
Addresses where Mohammad S. Waris is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 8; the Medicare profile lists all.
- 11116 Medical Campus RdHagerstown, MD 21742 (301) 790‑8000
- 1221 Mercantile LnLargo, MD 20774 (301) 618‑5700
- 1310 Southern Ave SEWashington, DC 20032 (202) 574‑7039
- 13285 Minnieville RdWoodbridge, VA 22192 (703) 986‑2400
- 1701 Twin Springs RdHalethorpe, MD 21227 (410) 737‑5000
Group practices
Medicare enrollment lists Mohammad S. Waris as a member of these groups (CMS data updated 2026-10-02).
- Kaiser Foundation Health Plan of the Mid Atlantic States, Inc1,899 clinicians in the group
- Inova Health Care Services1,817 clinicians in the group
- Meritus Medical Center Inc743 clinicians in the group
- Medical Faculty Associates, Inc672 clinicians in the group
Specialties
- Internal Medicineprimary
- Hospitalistalso
Other internal medicine doctors in Hagerstown
Clinicians with the same Medicare primary specialty in Hagerstown, MD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2005 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1427373638 |
| 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