Quick answers
- Which hospitals does Douglas A. Ballesteros work at?
- Medicare's official clinician data lists Douglas A. Ballesteros at 2 hospitals: Scripps Mercy Hospital and UC San Diego Health Hillcrest - Hillcrest Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Douglas A. Ballesteros see patients?
- Medicare's clinician data lists 2 practice locations, including San Diego, CA and Chula Vista, CA. Call before your visit to confirm the address.
- What is Douglas A. Ballesteros's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Douglas A. Ballesteros accept Medicare assignment?
- Yes. Medicare's clinician data says Douglas A. Ballesteros 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 Douglas A. Ballesteros?
- (858) 657-7000, as listed in official Medicare / NPI Registry data.
- What is Douglas A. Ballesteros's NPI number?
- 1275572372. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Douglas A. Ballesteros works
Medicare's Facility Affiliation Data lists Douglas A. Ballesteros at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Scripps Mercy HospitalSan Diego, CA · Acute Care Hospital · CCN 050077
- UC San Diego Health Hillcrest - Hillcrest Medical CenterSan Diego, CA · Acute Care Hospital · CCN 050025
Practice locations
Addresses where Douglas A. Ballesteros is enrolled with Medicare (CMS data updated 2026-10-02).
- 200 W Arbor DrSan Diego, CA 92103 (858) 657‑7000
- 435 H StChula Vista, CA 91910 (619) 691‑7290
Group practices
Medicare enrollment lists Douglas A. Ballesteros as a member of these groups (CMS data updated 2026-10-02).
- Regents of the University of California2,089 clinicians in the group
- Chula Vista Emergency Room Physicians a Medical Corporation29 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in San Diego
Clinicians with the same Medicare primary specialty in San Diego, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Southern California Keck School Of Medicine |
| Graduation year | 1999 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1275572372 |
| 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