Quick answers
- Where does Merry Ruan see patients?
- Medicare's clinician data lists 2 practice locations, including Houston, TX. Call before your visit to confirm the address.
- What is Merry Ruan's specialty?
- Medicare lists Ophthalmology as the primary specialty.
- Does Merry Ruan accept Medicare assignment?
- Yes. Medicare's clinician data says Merry Ruan 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 Merry Ruan?
- (713) 668-6828, as listed in official Medicare / NPI Registry data.
- What is Merry Ruan's NPI number?
- 1770043473. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Merry Ruan is enrolled with Medicare (CMS data updated 2026-10-02).
- 2855 Gramercy StHouston, TX 77025 (713) 668‑6828
- 590 Chimney RockHouston, TX 77056 (713) 782‑4406
Group practices
Medicare enrollment lists Merry Ruan as a member of this group (CMS data updated 2026-10-02).
- Hea Clinic PA42 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Houston
Clinicians with the same Medicare primary specialty in Houston, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Columbia University College Of Physicians And Surgeons |
| Graduation year | 2019 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1770043473 |
| 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
- 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