Quick answers
- Where does Andrew A. Chen see patients?
- Medicare's clinician data lists 1 practice location in Walnut Creek, CA. Call before your visit to confirm the address.
- What is Andrew A. Chen's specialty?
- Medicare lists Urology as the primary specialty.
- Does Andrew A. Chen accept Medicare assignment?
- Yes. Medicare's clinician data says Andrew A. 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.
- Does Andrew A. Chen offer telehealth?
- Medicare's clinician data says Andrew A. Chen offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Andrew A. Chen?
- (925) 295-4000, as listed in official Medicare / NPI Registry data.
- What is Andrew A. Chen's NPI number?
- 1811039480. 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 Andrew A. Chen is enrolled with Medicare (CMS data updated 2026-10-02).
- 1515 Newell AveWalnut Creek, CA 94596 (925) 295‑4000
Group practices
Medicare enrollment lists Andrew A. Chen as a member of this group (CMS data updated 2026-10-02).
- Permanente Medical Group Inc10,996 clinicians in the group
Specialties
- Urologyprimary
Other urologists in Walnut Creek
Clinicians with the same Medicare primary specialty in Walnut Creek, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Southern California Keck School Of Medicine |
| Graduation year | 2000 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1811039480 |
| 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