Quick answers
- Which hospitals does Christopher M. Blackwell work at?
- Medicare's official clinician data lists Christopher M. Blackwell at 5 hospitals: Contra Costa Regional Medical Center, Good Samaritan Hospital, John Muir Medical Center - Concord Campus, John Muir Medical Center - Walnut Creek Campus and Kaiser Foundation Hospital - Oakland/Richmond. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Christopher M. Blackwell see patients?
- Medicare's clinician data lists 15 practice locations, including Walnut Creek, CA, San Francisco, CA and Concord, CA. Call before your visit to confirm the address.
- What is Christopher M. Blackwell's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does Christopher M. Blackwell accept Medicare assignment?
- Medicare's clinician data says Christopher M. Blackwell may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for Christopher M. Blackwell?
- (925) 295-1545, as listed in official Medicare / NPI Registry data.
- What is Christopher M. Blackwell's NPI number?
- 1740740125. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Christopher M. Blackwell works
Medicare's Facility Affiliation Data lists Christopher M. Blackwell at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Contra Costa Regional Medical CenterMartinez, CA · Acute Care Hospital · CCN 050276
- Good Samaritan HospitalSan Jose, CA · Acute Care Hospital · CCN 050380
- 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
- Kaiser Foundation Hospital - Oakland/RichmondOakland, CA · Acute Care Hospital · CCN 050075
Practice locations
Addresses where Christopher M. Blackwell is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 15; the Medicare profile lists all.
- 115 La Casa Via, Suite 100Walnut Creek, CA 94598 (925) 295‑1545
- 1601 Ygnacio Valley RdWalnut Creek, CA 94598 (925) 295‑1545
- 1601 Ygnacio Vly RdWalnut Creek, CA 94596 (925) 939‑3000
- 177 La Casa ViaWalnut Creek, CA 94598 (925) 296‑7150
- 177 La Casa Via, Suite 100Walnut Creek, CA 94598 (925) 296‑7150
Group practices
Medicare enrollment lists Christopher M. Blackwell as a member of these groups (CMS data updated 2026-10-02).
- Bay Imaging Consultants Medical Group Inc146 clinicians in the group
- John Muir Trauma Physicians Billing Service113 clinicians in the group
- John Muir Magnetic Imaging Center57 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Walnut Creek
Clinicians with the same Medicare primary specialty in Walnut Creek, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2019 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1740740125 |
| 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