Quick answers
- Which hospitals does Athanasios Thomaides work at?
- Medicare's official clinician data lists Athanasios Thomaides at 4 hospitals: MedStar Georgetown University Hospital, MedStar Saint Mary's Hospital, MedStar Southern Maryland Hospital Center and MedStar Washington Hospital Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Athanasios Thomaides see patients?
- Medicare's clinician data lists 9 practice locations, including Washington, DC, Glen Burnie, MD and Frederick, MD. Call before your visit to confirm the address.
- What is Athanasios Thomaides's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty, and also Internal Medicine.
- Does Athanasios Thomaides accept Medicare assignment?
- Yes. Medicare's clinician data says Athanasios Thomaides 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 Athanasios Thomaides offer telehealth?
- Medicare's clinician data says Athanasios Thomaides offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Athanasios Thomaides?
- (202) 877-2851, as listed in official Medicare / NPI Registry data.
- What is Athanasios Thomaides's NPI number?
- 1134388853. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Athanasios Thomaides works
Medicare's Facility Affiliation Data lists Athanasios Thomaides at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- MedStar Georgetown University HospitalWashington, DC · Acute Care Hospital · CCN 090004
- MedStar Saint Mary's HospitalLeonardtown, MD · Acute Care Hospital · CCN 210028
- MedStar Southern Maryland Hospital CenterClinton, MD · Acute Care Hospital · CCN 210062
- MedStar Washington Hospital CenterWashington, DC · Acute Care Hospital · CCN 090011
Practice locations
Addresses where Athanasios Thomaides is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 9; the Medicare profile lists all.
- 110 Irving St NWWashington, DC 20010 (202) 877‑2851
- 1145 19th St NW, 311 Mmg at 19th Street NWWashington, DC 20036 (202) 429‑2401
- 1406 Crain S Hwy 106Glen Burnie, MD 21061 (410) 768‑6440
- 163 Thomas Johnson DrFrederick, MD 21702 (202) 877‑7685
- 24035 Three Notch RdHollywood, MD 20636 (301) 373‑7900
Group practices
Medicare enrollment lists Athanasios Thomaides as a member of these groups (CMS data updated 2026-10-02).
- MedStar Medical Group II LLC3,767 clinicians in the group
- MedStar Heart Institute LLC301 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in District of Columbia →
Other cardiologists in Washington
Clinicians with the same Medicare primary specialty in Washington, DC — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Texas Medical School At San Antonio |
| Graduation year | 2006 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1134388853 |
| 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