Quick answers
- Which hospitals does Efren F. Wu work at?
- Medicare's official clinician data lists Efren F. Wu at 2 hospitals: Mercy General Hospital and Mercy Hospital of Folsom. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Efren F. Wu see patients?
- Medicare's clinician data lists 2 practice locations, including El Dorado Hills, CA and Folsom, CA. Call before your visit to confirm the address.
- What is Efren F. Wu's specialty?
- Medicare lists Family Practice as the primary specialty, and also Sports Medicine.
- Does Efren F. Wu accept Medicare assignment?
- Yes. Medicare's clinician data says Efren F. Wu 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 Efren F. Wu offer telehealth?
- Medicare's clinician data says Efren F. Wu offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Efren F. Wu?
- (916) 939-8400, as listed in official Medicare / NPI Registry data.
- What is Efren F. Wu's NPI number?
- 1740432764. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Efren F. Wu works
Medicare's Facility Affiliation Data lists Efren F. Wu at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mercy General HospitalSacramento, CA · Acute Care Hospital · CCN 050017
- Mercy Hospital of FolsomFolsom, CA · Acute Care Hospital · CCN 050414
Practice locations
Addresses where Efren F. Wu is enrolled with Medicare (CMS data updated 2026-10-02).
- 1264 Hawks Flight Ct, Suite 100El Dorado Hills, CA 95762 (916) 939‑8400
- 1730 Prairie City Rd, Suite 120Folsom, CA 95630 (916) 351‑4800
Group practices
Medicare enrollment lists Efren F. Wu as a member of this group (CMS data updated 2026-10-02).
- Dignity Health Medical Foundation1,184 clinicians in the group
Specialties
- Family Practiceprimary
- Sports Medicinealso
Other family doctors in El Dorado Hills
Clinicians with the same Medicare primary specialty in El Dorado Hills, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2007 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1740432764 |
| 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