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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. FERNANDO V ONA MD
NPI 1811934748
Internal Medicine - Gastroenterology in Honolulu, HI

Active since May 31, 2006PECOS Enrolled
459 PATTERSON RD, HONOLULU, HI 96819(808) 433-0080(808) 433-0391 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jul 13, 2026, Nov 21, 2019 (2 updates tracked since 2019).

About Dr. Fernando V Ona Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. FERNANDO V ONA MD (NPI 1811934748) is an individual gastroenterology provider in Honolulu, Hawaii, licensed in Hawaii (10439) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1811934748
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameDR. FERNANDO V ONACredential: MD
Location Address459 PATTERSON RDHonolulu, HI 96819-1522
Mailing Address1712 Liliha St, Ste 205Honolulu, HI 96817-3100 · (808) 762-2311 · Fax (808) 376-8780
Phone(808) 433-0080
Fax(808) 433-0391
Sole ProprietorNo
Enumeration DateMay 31, 2006
Last NPPES UpdateJuly 13, 20262 updates tracked since enumeration
✔ NPI 1811934748 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in HI · 10439
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
459 PATTERSON RD, Honolulu, HI 96819
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Fernando V Ona Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 96819 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$136.68 typical visit price
range $60.53 – $180.05
Typical copayment $34.17 (range $15.13 – $45.01)
Most-billed visit code 99204
Established Patient
$105.65 typical visit price
range $20.09 – $147.56
Typical copayment $26.41 (range $5.02 – $36.89)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MR. DEAN S KUMASAKA
Pharmacist
459 PATTERSON RD
HONOLULU, HI 96819
Honolulu County (808) 433-0766
DR. TREVOR N COYLE
Psychologist (Clinical)
459 PATTERSON RD
HONOLULU, HI 96819
Honolulu County (808) 433-0600
MRS. DENISE WILLIAMS YOUNG RN
Registered Nurse
459 PATTERSON RD
HONOLULU, HI 96819
Honolulu County (808) 433-0600
KAY AYANO YOSHIDA SUZUKI RN
Registered Nurse
459 PATTERSON RD
HONOLULU, HI 96819
Honolulu County (808) 433-3153
JENNY RUMBAOA ANDRES RN
Registered Nurse
459 PATTERSON RD
HONOLULU, HI 96819
Honolulu County (808) 258-9146
MYRNA HOWSON RN
Registered Nurse (Administrator)
459 PATTERSON RD
HONOLULU, HI 96819
Honolulu County (808) 433-0652
RHONDA JEAN BAKER
Registered Nurse
459 PATTERSON RD
HONOLULU, HI 96819
Honolulu County (808) 433-0091
MELISSA ROBBINS NP
Nurse Practitioner (Gerontology)
459 PATTERSON RD
HONOLULU, HI 96819
Honolulu County (808) 829-9909

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Fernando Ona's NPI number?

The NPI number for Fernando Ona is 1811934748. It was assigned to this individual provider in the NPPES registry on May 31, 2006.

Where is Fernando Ona located?

Fernando Ona practices at 459 Patterson Rd, Honolulu, HI 96819. The listed phone number is (808) 433-0080.

What is Fernando Ona's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Fernando Ona enrolled in Medicare?

Yes. Fernando Ona is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Fernando Ona was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 40 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.