Quick answers
- Which hospitals does Mariko K. Johnson work at?
- Medicare's official clinician data lists Mariko K. Johnson at 2 hospitals: North Hawaii Community Hospital, Inc and The Queens Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mariko K. Johnson see patients?
- Medicare's clinician data lists 2 practice locations, including Honolulu, HI. Call before your visit to confirm the address.
- What is Mariko K. Johnson's specialty?
- Medicare lists Endocrinology as the primary specialty.
- Does Mariko K. Johnson accept Medicare assignment?
- Yes. Medicare's clinician data says Mariko K. Johnson 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 Mariko K. Johnson offer telehealth?
- Medicare's clinician data says Mariko K. Johnson offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Mariko K. Johnson?
- (808) 686-4650, as listed in official Medicare / NPI Registry data.
- What is Mariko K. Johnson's NPI number?
- 1629279617. 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 K. Johnson works
Medicare's Facility Affiliation Data lists Mariko K. Johnson at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- North Hawaii Community Hospital, IncKamuela, HI · Acute Care Hospital · CCN 120028
- The Queens Medical CenterHonolulu, HI · Acute Care Hospital · CCN 120001
Practice locations
Addresses where Mariko K. Johnson is enrolled with Medicare (CMS data updated 2026-10-02).
- 1380 Lusitana StHonolulu, HI 96813
- 405 N Kuakini St, Suite 601Honolulu, HI 96817 (808) 686‑4650
Group practices
Medicare enrollment lists Mariko K. Johnson as a member of this group (CMS data updated 2026-10-02).
- Queens University Medical Group614 clinicians in the group
Specialties
- Endocrinologyprimary
Other endocrinologists in Honolulu
Clinicians with the same Medicare primary specialty in Honolulu, HI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Columbia University College Of Physicians And Surgeons |
| Graduation year | 2005 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1629279617 |
| 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