Quick answers
- Where does Ryan J. Otsuka see patients?
- Medicare's clinician data lists 1 practice location in Honolulu, HI. Call before your visit to confirm the address.
- What is Ryan J. Otsuka's specialty?
- Medicare lists Ophthalmology as the primary specialty.
- Does Ryan J. Otsuka accept Medicare assignment?
- Medicare's clinician data says Ryan J. Otsuka may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for Ryan J. Otsuka?
- (808) 531-2731, as listed in official Medicare / NPI Registry data.
- What is Ryan J. Otsuka's NPI number?
- 1962765826. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Ryan J. Otsuka is enrolled with Medicare (CMS data updated 2026-10-02).
- 321 N Kuakini St, Suite 811Honolulu, HI 96817 (808) 531‑2731
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Honolulu
Clinicians with the same Medicare primary specialty in Honolulu, HI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Hawaii John A. Burns School Of Medicine |
| Graduation year | 2012 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1962765826 |
| 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
- 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