Quick answers
- Which hospitals does Guoyu Ling work at?
- Medicare's official clinician data lists Guoyu Ling at 2 hospitals: Good Samaritan Regional Health Center and SSM Health Saint Louis University Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Guoyu Ling see patients?
- Medicare's clinician data lists 1 practice location in Saint Louis, MO. Call before your visit to confirm the address.
- What is Guoyu Ling's specialty?
- Medicare lists Endocrinology as the primary specialty, and also Internal Medicine.
- Does Guoyu Ling accept Medicare assignment?
- Yes. Medicare's clinician data says Guoyu Ling 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 Guoyu Ling?
- (314) 617-2000, as listed in official Medicare / NPI Registry data.
- What is Guoyu Ling's NPI number?
- 1104112994. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Guoyu Ling works
Medicare's Facility Affiliation Data lists Guoyu Ling at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Good Samaritan Regional Health CenterMount Vernon, IL · Acute Care Hospital · CCN 140046
- SSM Health Saint Louis University HospitalSaint Louis, MO · Acute Care Hospital · CCN 260105
Practice locations
Addresses where Guoyu Ling is enrolled with Medicare (CMS data updated 2026-10-02).
- 1201 S Grand BlvdSaint Louis, MO 63104 (314) 617‑2000
Group practices
Medicare enrollment lists Guoyu Ling as a member of this group (CMS data updated 2026-10-02).
- SSM Health Care Group940 clinicians in the group
Specialties
- Endocrinologyprimary
- Internal Medicinealso
Other endocrinologists in Saint Louis
Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.
Clinician information
| Graduation year | 1994 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1104112994 |
| 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