Jayson Masaki, M.D.
NPI 1972985588 · Psychiatry Physician · Mililani, HI
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jayson Masaki, M.D. is a Psychiatry Physician provider in Mililani, HI (NPI 1972985588).
Provider details
- NPI number
- 1972985588
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 125066569 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
11 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
3 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Olanzapine | 28 | 11 |
| Quetiapine Fumarate | 25 | — |
| Haloperidol | 23 | — |
| Haloperidol Lactate | 22 | — |
| Hydroxyzine Pamoate | 21 | — |
| Divalproex Sodiumbrand: Divalproex Sodium Er | 20 | — |
| Paliperidonebrand: Paliperidone Er | 20 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$383 across 4 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (2)
- 928 Nuuanu Ave Ste 2Honolulu, HI 96817-5193Phone: (808) 207-9800Fax: (725) 215-9036
- 133 N Market StWailuku, HI 96793-1754Phone: (808) 207-9800Fax: (725) 215-9036
Registry dates
- Enumerated
- 2015-06-19
- Last updated
- 2025-07-22
- Certified
- 2025-07-22
Frequently asked questions
- What is Jayson Masaki's NPI number?
- Jayson Masaki's National Provider Identifier (NPI) is 1972985588, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jayson Masaki's specialty?
- Jayson Masaki is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Jayson Masaki located?
- Jayson Masaki's practice location on file with NPPES is 100 Kahelu Ave Ste 232, Mililani, HI 96789-3962.
- What is Jayson Masaki's phone number?
- The practice phone number listed in the NPPES registry for Jayson Masaki is (808) 207-9800.
- Does Jayson Masaki accept Medicare?
- Jayson Masaki is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jayson Masaki's NPI active?
- Yes — Jayson Masaki's NPI (1972985588) is active in the NPPES registry as of the last update on 2025-07-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.