Quick answers
- Which hospitals does James Feng work at?
- Medicare's official clinician data lists James Feng at 4 hospitals: Alta Bates Summit Medical Center, Alta Bates Summit Medical Center - Alta Bates Camp…, John Muir Medical Center - Concord Campus and John Muir Medical Center - Walnut Creek Campus. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does James Feng see patients?
- Medicare's clinician data lists 2 practice locations, including Walnut Creek, CA and Oakland, CA. Call before your visit to confirm the address.
- What is James Feng's specialty?
- Medicare lists Orthopedic Surgery as the primary specialty.
- Does James Feng accept Medicare assignment?
- Medicare's clinician data says James Feng may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- Does James Feng offer telehealth?
- Medicare's clinician data says James Feng offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for James Feng?
- (925) 939-3000, as listed in official Medicare / NPI Registry data.
- What is James Feng's NPI number?
- 1699333567. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where James Feng works
Medicare's Facility Affiliation Data lists James Feng at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Alta Bates Summit Medical CenterOakland, CA · Acute Care Hospital · CCN 050043
- Alta Bates Summit Medical Center - Alta Bates Camp…Berkeley, CA · Acute Care Hospital · CCN 050305
- John Muir Medical Center - Concord CampusConcord, CA · Acute Care Hospital · CCN 050496
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA · Acute Care Hospital · CCN 050180
Practice locations
Addresses where James Feng is enrolled with Medicare (CMS data updated 2026-10-02).
- 1601 Ygnacio Vly RdWalnut Creek, CA 94596 (925) 939‑3000
- 3315 BroadwayOakland, CA 94611 (800) 943‑8099
Group practices
Medicare enrollment lists James Feng as a member of these groups (CMS data updated 2026-10-02).
- Golden State Orthopedics and Spine182 clinicians in the group
- John Muir Trauma Physicians Billing Service113 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Walnut Creek
Clinicians with the same Medicare primary specialty in Walnut Creek, CA — not a recommendation.
Clinician information
| Medical school | New York University School Of Medicine |
|---|---|
| Graduation year | 2017 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1699333567 |
| 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