Quick answers
- Which hospitals does Timothy T. Xu work at?
- Medicare's official clinician data lists Timothy T. Xu at 3 hospitals: Mayo Clinic Hospital Rochester, Thomas Jefferson University Hospital and Wills Eye Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Timothy T. Xu see patients?
- Medicare's clinician data lists 1 practice location in Philadelphia, PA. Call before your visit to confirm the address.
- What is Timothy T. Xu's specialty?
- Medicare lists Ophthalmology as the primary specialty.
- Does Timothy T. Xu accept Medicare assignment?
- Yes. Medicare's clinician data says Timothy T. Xu 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 Timothy T. Xu?
- (800) 331-6634, as listed in official Medicare / NPI Registry data.
- What is Timothy T. Xu's NPI number?
- 1699351635. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Timothy T. Xu works
Medicare's Facility Affiliation Data lists Timothy T. Xu at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mayo Clinic Hospital RochesterRochester, MN · Acute Care Hospital · CCN 240010
- Thomas Jefferson University HospitalPhiladelphia, PA · Acute Care Hospital · CCN 390174
- Wills Eye HospitalPhiladelphia, PA · Acute Care Hospital · CCN 390331
Practice locations
Addresses where Timothy T. Xu is enrolled with Medicare (CMS data updated 2026-10-02).
- 840 Walnut StPhiladelphia, PA 19107 (800) 331‑6634
Group practices
Medicare enrollment lists Timothy T. Xu as a member of these groups (CMS data updated 2026-10-02).
- Wills Eye Ophthalmology Clinic, Inc147 clinicians in the group
- Retinovitreous Associates Ltd37 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Philadelphia
Clinicians with the same Medicare primary specialty in Philadelphia, PA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Mayo Medical School |
| Graduation year | 2021 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1699351635 |
| 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