Quick answers
- Which hospitals does Alexander C. Guo work at?
- Medicare's official clinician data lists Alexander C. Guo at 2 hospitals: Marshall Medical Center and University of California Davis Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Alexander C. Guo see patients?
- Medicare's clinician data lists 4 practice locations, including Placerville, CA, Cameron Park, CA and El Dorado Hills, CA. Call before your visit to confirm the address.
- What is Alexander C. Guo's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty, and also Interventional Radiology and Nuclear Medicine.
- Does Alexander C. Guo accept Medicare assignment?
- Yes. Medicare's clinician data says Alexander C. Guo 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 Alexander C. Guo?
- (530) 622-1441, as listed in official Medicare / NPI Registry data.
- What is Alexander C. Guo's NPI number?
- 1083703201. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Alexander C. Guo works
Medicare's Facility Affiliation Data lists Alexander C. Guo at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Marshall Medical CenterPlacerville, CA · Acute Care Hospital · CCN 050254
- University of California Davis Medical CenterSacramento, CA · Acute Care Hospital · CCN 050599
Practice locations
Addresses where Alexander C. Guo is enrolled with Medicare (CMS data updated 2026-10-02).
- 1100 Marshall WayPlacerville, CA 95667 (530) 622‑1441
- 3581 Palmer DrCameron Park, CA 95682 (530) 622‑9700
- 4201 Town Ctr Blvd, Bldg DEl Dorado Hills, CA 95762 (530) 344‑5400
- 75 Nielson St, Watsonville Community HospitalWatsonville, CA 95076 (831) 724‑4741
Group practices
Medicare enrollment lists Alexander C. Guo as a member of these groups (CMS data updated 2026-10-02).
- Central Valley Imaging Medical Associates Inc89 clinicians in the group
- Placerville Radiology Medical Group Inc61 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
- Interventional Radiologyalso
- Nuclear Medicinealso
Other radiologists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Johns Hopkins University School Of Medicine |
| Graduation year | 1994 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1083703201 |
| 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