Mari Otsuka, M.D.
NPI 1538165188 · Internal Medicine Physician · Honolulu, HI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mari Otsuka, M.D. is a Internal Medicine Physician provider in Honolulu, HI (NPI 1538165188).
Provider details
- NPI number
- 1538165188
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- MD4561 (HI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
21 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-06-27
- Last updated
- 2007-11-07
Frequently asked questions
- What is Mari Otsuka's NPI number?
- Mari Otsuka's National Provider Identifier (NPI) is 1538165188, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mari Otsuka's specialty?
- Mari Otsuka is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mari Otsuka located?
- Mari Otsuka's practice location on file with NPPES is 321 N Kuakini St, Honolulu, HI 96817-2362.
- What is Mari Otsuka's phone number?
- The practice phone number listed in the NPPES registry for Mari Otsuka is (808) 531-2731.
- Does Mari Otsuka accept Medicare?
- Mari Otsuka is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mari Otsuka's NPI active?
- Yes — Mari Otsuka's NPI (1538165188) is active in the NPPES registry as of the last update on 2007-11-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.