Quick answers
- Which hospitals does Erin Ong work at?
- Medicare's official clinician data lists Erin Ong at 1 hospital: UVA Health Prince William Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Erin Ong see patients?
- Medicare's clinician data lists 3 practice locations, including Fairfax, VA, Gainesville, VA and Manassas, VA. Call before your visit to confirm the address.
- What is Erin Ong's specialty?
- Medicare lists Ophthalmology as the primary specialty.
- Does Erin Ong accept Medicare assignment?
- Yes. Medicare's clinician data says Erin Ong 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 Erin Ong?
- (571) 349-2191, as listed in official Medicare / NPI Registry data.
- What is Erin Ong's NPI number?
- 1346773389. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Erin Ong works
Medicare's Facility Affiliation Data lists Erin Ong at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- UVA Health Prince William Medical CenterManassas, VA · Acute Care Hospital · CCN 490045
Practice locations
Addresses where Erin Ong is enrolled with Medicare (CMS data updated 2026-10-02).
- 3998 Fair Ridge Dr, Suite 105Fairfax, VA 22033 (571) 349‑2191
- 7915 Lake Manassas Dr, Suite 210Gainesville, VA 20155 (571) 349‑2191
- 8644 Sudley Rd, Suite 201Manassas, VA 20110 (571) 349‑2191
Group practices
Medicare enrollment lists Erin Ong as a member of this group (CMS data updated 2026-10-02).
- Eye Specialists and Surgeons of Northern Virginia LLC11 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Fairfax
Clinicians with the same Medicare primary specialty in Fairfax, VA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Miami, Lm Miller School Of Medicine |
| Graduation year | 2017 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1346773389 |
| 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