Quick answers
- Which hospitals does John C. Elkas work at?
- Medicare's official clinician data lists John C. Elkas at 5 hospitals: Inova Alexandria Hospital, Inova Fair Oaks Hospital, Inova Fairfax Hospital, Reston Hospital Center and Winchester Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John C. Elkas see patients?
- Medicare's clinician data lists 2 practice locations, including Falls Church, VA and Potomac Falls, VA. Call before your visit to confirm the address.
- What is John C. Elkas's specialty?
- Medicare lists Gynecological Oncology as the primary specialty, and also Obstetrics/Gynecology.
- Does John C. Elkas accept Medicare assignment?
- Yes. Medicare's clinician data says John C. Elkas 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 John C. Elkas offer telehealth?
- Medicare's clinician data says John C. Elkas offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for John C. Elkas?
- (703) 430-7770, as listed in official Medicare / NPI Registry data.
- What is John C. Elkas's NPI number?
- 1730156373. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John C. Elkas works
Medicare's Facility Affiliation Data lists John C. Elkas 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
- Reston Hospital CenterReston, VA · Acute Care Hospital · CCN 490107
- Winchester Medical CenterWinchester, VA · Acute Care Hospital · CCN 490005
Practice locations
Addresses where John C. Elkas is enrolled with Medicare (CMS data updated 2026-10-02).
- 3300 Gallows RdFalls Church, VA 22042
- 46179 Westlake DrPotomac Falls, VA 20165 (703) 430‑7770
Group practices
Medicare enrollment lists John C. Elkas as a member of these groups (CMS data updated 2026-10-02).
- Inova Health Care Services1,817 clinicians in the group
- Capital Womens Care LLC281 clinicians in the group
Specialties
- Gynecological Oncologyprimary
- Obstetrics/Gynecologyalso
Other gynecologic oncologists in Virginia
Clinicians with the same Medicare primary specialty in Virginia — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | New York University Medical College - Nlg |
| Graduation year | 1993 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1730156373 |
| 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