Quick answers
- Which hospitals does Mariko U. Karres work at?
- Medicare's official clinician data lists Mariko U. Karres at 4 hospitals: Scripps Green Hospital, Scripps Memorial Hospital - Encinitas, Scripps Memorial Hospital La Jolla and Scripps Mercy Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mariko U. Karres see patients?
- Medicare's clinician data lists 2 practice locations, including La Jolla, CA and San Diego, CA. Call before your visit to confirm the address.
- What is Mariko U. Karres's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Mariko U. Karres accept Medicare assignment?
- Yes. Medicare's clinician data says Mariko U. Karres 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 Mariko U. Karres?
- (858) 554-9100, as listed in official Medicare / NPI Registry data.
- What is Mariko U. Karres's NPI number?
- 1538211644. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mariko U. Karres works
Medicare's Facility Affiliation Data lists Mariko U. Karres at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Scripps Green HospitalLa Jolla, CA · Acute Care Hospital · CCN 050424
- Scripps Memorial Hospital - EncinitasEncinitas, CA · Acute Care Hospital · CCN 050503
- Scripps Memorial Hospital La JollaLa Jolla, CA · Acute Care Hospital · CCN 050324
- Scripps Mercy HospitalSan Diego, CA · Acute Care Hospital · CCN 050077
Practice locations
Addresses where Mariko U. Karres is enrolled with Medicare (CMS data updated 2026-10-02).
- 10710 N Torrey Pines RdLa Jolla, CA 92037 (858) 554‑9100
- 15004 Innovation DrSan Diego, CA 92128 (858) 487‑1800
Group practices
Medicare enrollment lists Mariko U. Karres as a member of this group (CMS data updated 2026-10-02).
- Scripps Health1,433 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in La Jolla
Clinicians with the same Medicare primary specialty in La Jolla, CA — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Medical school | Ohio State University College Of Medicine |
| Graduation year | 2003 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1538211644 |
| 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