Quick answers
- Which hospitals does Chagai Mendelson work at?
- Medicare's official clinician data lists Chagai Mendelson at 4 hospitals: Inova Fair Oaks Hospital, Inova Fairfax Hospital, Inova Loudoun Hospital and Reston Hospital Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Chagai Mendelson see patients?
- Medicare's clinician data lists 7 practice locations, including Reston, VA, Falls Church, VA and Lansdowne, VA. Call before your visit to confirm the address.
- What is Chagai Mendelson's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Chagai Mendelson accept Medicare assignment?
- Yes. Medicare's clinician data says Chagai Mendelson 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 Chagai Mendelson offer telehealth?
- Medicare's clinician data says Chagai Mendelson offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Chagai Mendelson?
- (703) 481-3165, as listed in official Medicare / NPI Registry data.
- What is Chagai Mendelson's NPI number?
- 1497250120. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Chagai Mendelson works
Medicare's Facility Affiliation Data lists Chagai Mendelson at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Inova Fair Oaks HospitalFairfax, VA · Acute Care Hospital · CCN 490101
- Inova Fairfax HospitalFalls Church, VA · Acute Care Hospital · CCN 490063
- Inova Loudoun HospitalLeesburg, VA · Acute Care Hospital · CCN 490043
- Reston Hospital CenterReston, VA · Acute Care Hospital · CCN 490107
Practice locations
Addresses where Chagai Mendelson is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 7; the Medicare profile lists all.
- 1830 Town Ctr DrReston, VA 20190 (703) 481‑3165
- 1850 Town Ctr PkwyReston, VA 20190 (703) 689‑9000
- 3300 Gallows RdFalls Church, VA 22042
- 44084 Riverside Pkwy, Suite 150Lansdowne, VA 20176 (703) 858‑3185
- 8644 Sudley Rd, Suite 220Manassas, VA 20110 (571) 366‑8845
Group practices
Medicare enrollment lists Chagai Mendelson as a member of these groups (CMS data updated 2026-10-02).
- Privia Medical Group, LLC1,533 clinicians in the group
- Reston Hospital Center LLC10 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Reston
Clinicians with the same Medicare primary specialty in Reston, VA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Georgetown University School Of Medicine |
| Graduation year | 2018 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1497250120 |
| 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