Chayanin Hamada, M.D.
NPI 1639603566 · Child & Adolescent Psychiatry Physician · Honolulu, HI
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chayanin Hamada, M.D. is a Child & Adolescent Psychiatry Physician provider in Honolulu, HI (NPI 1639603566).
Provider details
- NPI number
- 1639603566
- Entity type
- Individual
- Primary specialty
- Child & Adolescent Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- ETELL344284681 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
9 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$54 across 2 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 (1)
- Tufts Medical Center 800 Washington Street #1007Boston, MA 02111Phone: (617) 636-0219
Registry dates
- Enumerated
- 2017-04-18
- Last updated
- 2025-03-19
- Certified
- 2022-08-09
Frequently asked questions
- What is Chayanin Hamada's NPI number?
- Chayanin Hamada's National Provider Identifier (NPI) is 1639603566, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chayanin Hamada's specialty?
- Chayanin Hamada is listed in the NPPES registry with a primary specialty of Child & Adolescent Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Chayanin Hamada located?
- Chayanin Hamada's practice location on file with NPPES is 1301 Punchbowl St, Honolulu, HI 96813-2499.
- What is Chayanin Hamada's phone number?
- The practice phone number listed in the NPPES registry for Chayanin Hamada is (808) 691-1000.
- Does Chayanin Hamada accept Medicare?
- Chayanin Hamada is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chayanin Hamada's NPI active?
- Yes — Chayanin Hamada's NPI (1639603566) is active in the NPPES registry as of the last update on 2025-03-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.