Quick answers
- Which hospitals does John W. Buckner Iv work at?
- Medicare's official clinician data lists John W. Buckner Iv at 1 hospital: St Johns Regional Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John W. Buckner Iv see patients?
- Medicare's clinician data lists 2 practice locations, including Oxnard, CA and Camarillo, CA. Call before your visit to confirm the address.
- What is John W. Buckner Iv's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does John W. Buckner Iv accept Medicare assignment?
- Yes. Medicare's clinician data says John W. Buckner Iv 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 John W. Buckner Iv?
- (805) 988-2500, as listed in official Medicare / NPI Registry data.
- What is John W. Buckner Iv's NPI number?
- 1215294327. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John W. Buckner Iv works
Medicare's Facility Affiliation Data lists John W. Buckner Iv at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- St Johns Regional Medical CenterOxnard, CA · Acute Care Hospital · CCN 050082
Practice locations
Addresses where John W. Buckner Iv is enrolled with Medicare (CMS data updated 2026-10-02).
- 1600 N Rose AveOxnard, CA 93030 (805) 988‑2500
- 2309 Antonio AveCamarillo, CA 93010 (805) 389‑5800
Group practices
Medicare enrollment lists John W. Buckner Iv as a member of this group (CMS data updated 2026-10-02).
- Cep America - California1,292 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Oxnard
Clinicians with the same Medicare primary specialty in Oxnard, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Missouri, Kansas City, School Of Medicine |
| Graduation year | 2012 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1215294327 |
| 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