Quick answers
- Which hospitals does Walter Kerwin work at?
- Medicare's official clinician data lists Walter Kerwin at 3 hospitals: Cedars-Sinai Medical Center, CHI St Alexius Health and Saint John's Health Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Walter Kerwin see patients?
- Medicare's clinician data lists 2 practice locations, including Los Angeles, CA and Bismarck, ND. Call before your visit to confirm the address.
- What is Walter Kerwin's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty, and also Internal Medicine.
- Does Walter Kerwin accept Medicare assignment?
- Yes. Medicare's clinician data says Walter Kerwin 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.
- Does Walter Kerwin offer telehealth?
- Medicare's clinician data says Walter Kerwin offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Walter Kerwin?
- (310) 289-0141, as listed in official Medicare / NPI Registry data.
- What is Walter Kerwin's NPI number?
- 1457397556. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Walter Kerwin works
Medicare's Facility Affiliation Data lists Walter Kerwin at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Cedars-Sinai Medical CenterLos Angeles, CA · Acute Care Hospital · CCN 050625
- CHI St Alexius HealthBismarck, ND · Acute Care Hospital · CCN 350002
- Saint John's Health CenterSanta Monica, CA · Acute Care Hospital · CCN 050290
Practice locations
Addresses where Walter Kerwin is enrolled with Medicare (CMS data updated 2026-10-02).
- 8631 W 3rd St, Suite 1017eLos Angeles, CA 90048 (310) 289‑0141
- 900 E Broadway AveBismarck, ND 58501 (701) 530‑7000
Group practices
Medicare enrollment lists Walter Kerwin as a member of this group (CMS data updated 2026-10-02).
- St Alexius Medical Center238 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in California →
Other cardiologists in Los Angeles
Clinicians with the same Medicare primary specialty in Los Angeles, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1985 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1457397556 |
| 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