Quick answers
- Which hospitals does Huiyi Chen work at?
- Medicare's official clinician data lists Huiyi Chen at 1 hospital: Mercy Hospital St Louis. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Huiyi Chen see patients?
- Medicare's clinician data lists 3 practice locations, including St Louis, MO, Saint Louis, MO and Washington, MO. Call before your visit to confirm the address.
- What is Huiyi Chen's specialty?
- Medicare lists Ophthalmology as the primary specialty.
- Does Huiyi Chen accept Medicare assignment?
- Yes. Medicare's clinician data says Huiyi Chen 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 Huiyi Chen?
- (314) 251-5300, as listed in official Medicare / NPI Registry data.
- What is Huiyi Chen's NPI number?
- 1851603609. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Huiyi Chen works
Medicare's Facility Affiliation Data lists Huiyi Chen at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mercy Hospital St LouisSaint Louis, MO · Acute Care Hospital · CCN 260020
Practice locations
Addresses where Huiyi Chen is enrolled with Medicare (CMS data updated 2026-10-02).
- 615 S New Ballas Rd Admin Bldg 5thSt Louis, MO 63141
- 621 S New Ballas Rd, Suite 140aSaint Louis, MO 63141 (314) 251‑5300
- 901 Patients 1st Dr, Suite 2600Washington, MO 63090 (636) 231‑3651
Group practices
Medicare enrollment lists Huiyi Chen as a member of this group (CMS data updated 2026-10-02).
- Mercy Clinic Ophthalmology LLC15 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Missouri
Clinicians with the same Medicare primary specialty in Missouri — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1989 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1851603609 |
| 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