Quick answers
- Which hospitals does Riny A. Karras work at?
- Medicare's official clinician data lists Riny A. Karras at 4 hospitals: Adventist Healthcare Shady Grove Medical Center, Adventist Healthcare White Oak Medical Center, Holy Cross Germantown Hospital and Holy Cross Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Riny A. Karras see patients?
- Medicare's clinician data lists 4 practice locations, including Silver Spring, MD, Germantown, MD and Rockville, MD. Call before your visit to confirm the address.
- What is Riny A. Karras's specialty?
- Medicare lists Thoracic Surgery as the primary specialty.
- Does Riny A. Karras accept Medicare assignment?
- Yes. Medicare's clinician data says Riny A. Karras 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 Riny A. Karras offer telehealth?
- Medicare's clinician data says Riny A. Karras offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Riny A. Karras?
- (240) 637-4000, as listed in official Medicare / NPI Registry data.
- What is Riny A. Karras's NPI number?
- 1114132909. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Riny A. Karras works
Medicare's Facility Affiliation Data lists Riny A. Karras at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Adventist Healthcare Shady Grove Medical CenterRockville, MD · Acute Care Hospital · CCN 210057
- Adventist Healthcare White Oak Medical CenterSilver Spring, MD · Acute Care Hospital · CCN 210016
- Holy Cross Germantown HospitalGermantown, MD · Acute Care Hospital · CCN 210065
- Holy Cross HospitalSilver Spring, MD · Acute Care Hospital · CCN 210004
Practice locations
Addresses where Riny A. Karras is enrolled with Medicare (CMS data updated 2026-10-02).
- 11890 Healing WaySilver Spring, MD 20904 (240) 637‑4000
- 1500 Forest Glen RdSilver Spring, MD 20910 (301) 754‑7000
- 19801 Observation DrGermantown, MD 20876 (301) 557‑6000
- 9901 Medical Ctr DrRockville, MD 20850 (240) 826‑6000
Group practices
Medicare enrollment lists Riny A. Karras as a member of this group (CMS data updated 2026-10-02).
- Professional Services of Holy Cross158 clinicians in the group
Specialties
- Thoracic Surgeryprimary
Other thoracic surgeons in Maryland
Clinicians with the same Medicare primary specialty in Maryland — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Ohio State University College Of Medicine |
| Graduation year | 2003 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1114132909 |
| 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