Quick answers
- Which hospitals does Mark K. Yamanaka work at?
- Medicare's official clinician data lists Mark K. Yamanaka at 1 hospital: Tri-City Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark K. Yamanaka see patients?
- Medicare's clinician data lists 3 practice locations, including Long Beach, CA and Oceanside, CA. Call before your visit to confirm the address.
- What is Mark K. Yamanaka's specialty?
- Medicare lists Pulmonary Disease as the primary specialty, and also Critical Care (Intensivists).
- Does Mark K. Yamanaka accept Medicare assignment?
- Yes. Medicare's clinician data says Mark K. Yamanaka 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 Mark K. Yamanaka?
- (562) 491-9000, as listed in official Medicare / NPI Registry data.
- What is Mark K. Yamanaka's NPI number?
- 1013004852. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark K. Yamanaka works
Medicare's Facility Affiliation Data lists Mark K. Yamanaka at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Tri-City Medical CenterOceanside, CA · Acute Care Hospital · CCN 050128
Practice locations
Addresses where Mark K. Yamanaka is enrolled with Medicare (CMS data updated 2026-10-02).
- 1050 Linden AveLong Beach, CA 90813 (562) 491‑9000
- 3907 Waring Rd, Suite 2Oceanside, CA 92056 (760) 941‑0221
- 4002 Vista WayOceanside, CA 92056 (760) 724‑8411
Group practices
Medicare enrollment lists Mark K. Yamanaka as a member of these groups (CMS data updated 2026-10-02).
- Cep America - Intensivists PC125 clinicians in the group
- Pulmonary Specialists of North County Inc4 clinicians in the group
Specialties
Other pulmonologists in Long Beach
Clinicians with the same Medicare primary specialty in Long Beach, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, Davis School Of Medicine |
| Graduation year | 1981 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1013004852 |
| 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