Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

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

Q: What is the provider's specialty?

The provider's specialty is Internal Medicine with taxonomy code 207RG0100X and a focus in Gastroenterology.

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: July 19, 2026.

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

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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.