Quick answers
- Which hospitals does Douglas R. Mailman work at?
- Medicare's official clinician data lists Douglas R. Mailman at 2 hospitals: Providence Regional Medical Center Everett and Samuel Mahelona Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Douglas R. Mailman see patients?
- Medicare's clinician data lists 6 practice locations, including Eleele, HI, Lihue, HI and Kapaa, HI. Call before your visit to confirm the address.
- What is Douglas R. Mailman's specialty?
- Medicare lists Addiction Medicine as the primary specialty, and also Pediatric Medicine.
- Does Douglas R. Mailman accept Medicare assignment?
- Yes. Medicare's clinician data says Douglas R. Mailman accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Douglas R. Mailman?
- (808) 335-0579, as listed in official Medicare / NPI Registry data.
- What is Douglas R. Mailman's NPI number?
- 1528504891. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Douglas R. Mailman works
Medicare's Facility Affiliation Data lists Douglas R. Mailman at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Providence Regional Medical Center EverettEverett, WA · Acute Care Hospital · CCN 500014
- Samuel Mahelona Memorial HospitalKapaa, HI · Critical Access Hospital · CCN 121306
Practice locations
Addresses where Douglas R. Mailman is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 4353 Waialo RdEleele, HI 96705 (808) 335‑0579
- 4463 Pahee StLihue, HI 96766 (808) 241‑5799
- 4463 Pahee St, Suite 206Lihue, HI 96766 (808) 241‑5799
- 4800 Kawaihau RdKapaa, HI 96746 (808) 822‑4961
- 900 Pacific AveEverett, WA 98201
Group practices
Medicare enrollment lists Douglas R. Mailman as a member of these groups (CMS data updated 2026-10-02).
- Samuel Mahelona Memorial Hospital47 clinicians in the group
- Providence Health and Services-Wa25 clinicians in the group
Specialties
- Addiction Medicineprimary
- Pediatric Medicinealso
Other addiction medicine doctors in Hawaii
Clinicians with the same Medicare primary specialty in Hawaii — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Texas Southwestern Medical School At Dallas |
| Graduation year | 1992 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1528504891 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- 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