Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Gastroenterology

Mel A. Ona

Works at hospitals in Aiea, HI · Hawaii

Summary

Mel A. Ona (Gastroenterology) is listed by Medicare at 1 hospital in Aiea, HI. NPI 1720318199. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Mel A. Ona, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

GastroenterologyPrimary specialty
May acceptAccepts Medicare assignment
YesOffers telehealth
17Years since medical school (graduated 2009)
MaleGender (as listed)
Mel a Ona M D IncorporatedGroup practice

Quick answers

Which hospitals does Mel A. Ona work at?
Medicare's official clinician data lists Mel A. Ona at 1 hospital: Pali Momi Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Mel A. Ona see patients?
Medicare's clinician data lists 1 practice location in Kapolei, HI. Call before your visit to confirm the address.
What is Mel A. Ona's specialty?
Medicare lists Gastroenterology as the primary specialty.
Does Mel A. Ona accept Medicare assignment?
Medicare's clinician data says Mel A. Ona may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
Does Mel A. Ona offer telehealth?
Medicare's clinician data says Mel A. Ona offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Mel A. Ona?
(808) 762-2311, as listed in official Medicare / NPI Registry data.
What is Mel A. Ona's NPI number?
1720318199. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Mel A. Ona works

Medicare's Facility Affiliation Data lists Mel A. Ona at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Mel A. Ona is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Mel A. Ona as a member of this group (CMS data updated 2026-10-02).

  • Mel a Ona M D Incorporated3 clinicians in the group

Specialties

Find other Gastroenterology doctors in Hawaii →

Other gastroenterologists in Hawaii

Clinicians with the same Medicare primary specialty in Hawaii — not a recommendation.

All gastroenterologists in Hawaii →

Clinician information

Graduation year2009
Gender (as listed)Male
Medicare assignmentMay accept for some services
TelehealthOffers telehealth services
NPI (National Provider Identifier)1720318199
CorrectionsReport 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

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians