Leonard Mason, PA-C
NPI 1912977455 · Physician Assistant · Honolulu, HI
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Leonard Mason, PA-C is a Physician Assistant provider in Honolulu, HI (NPI 1912977455).
Provider details
- NPI number
- 1912977455
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- No
- License
- PA10003571 (WA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
- 2006-01-26
- Last updated
- 2024-01-02
- Certified
- 2023-12-29
Frequently asked questions
- What is Leonard Mason's NPI number?
- Leonard Mason's National Provider Identifier (NPI) is 1912977455, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leonard Mason's specialty?
- Leonard Mason is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Leonard Mason located?
- Leonard Mason's practice location on file with NPPES is Tripler Army Medical Center, Honolulu, HI 96859-5000.
- What is Leonard Mason's phone number?
- The practice phone number listed in the NPPES registry for Leonard Mason is (808) 433-4720.
- Does Leonard Mason accept Medicare?
- Leonard Mason is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Leonard Mason's NPI active?
- Yes — Leonard Mason's NPI (1912977455) is active in the NPPES registry as of the last update on 2024-01-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.