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DEREK R ILLASTRON MD
NPI 1790949956
Internal Medicine in Kahului, HI

Active since July 16, 2008PECOS EnrolledAccepts Medicare Assignment
87.03/100
CMS Quality Rating
110 E KAAHUMANU AVE, KAHULUI, HI 96732(808) 242-6464(808) 243-2367 Get Directions Write a Review

NPPES record last updated: March 19, 2019. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Derek R Illastron Md NPPES

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

DEREK R ILLASTRON MD (NPI 1790949956) is an individual internal medicine provider in Kahului, Hawaii, licensed in Hawaii (MD-18353) and active in the NPI registry since July 2008. He is enrolled in Medicare PECOS, is affiliated with Maui Memorial Medical Center, and is a graduate of Other (2005).

NPPES Registry Identity

NPI1790949956
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDEREK R ILLASTRONCredential: MD
Location Address110 E KAAHUMANU AVEKahului, HI 96732-2118
Mailing Address2180 Main StWailuku, HI 96793-1625 · (808) 242-6464
Phone(808) 242-6464
Fax(808) 243-2367
Sole ProprietorNo
Medical School CMSOtherGraduated 2005
Enumeration DateJuly 16, 2008
Last NPPES UpdateMarch 19, 2019
✔ NPI 1790949956 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Licenses✔ Licensed in HI · MD-18353✔ Licensed in MA · 235414
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
110 E KAAHUMANU AVE, Kahului, HI 96732
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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 and accepts Medicare assignment

Derek R Illastron Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8921176264
PECOS Enrollment IDI20160504002708
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.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Maui Memorial Medical Center

Acute Care Hospitals · Wailuku, HI
3/5 CMS rating
OwnershipGovernment - State
CMS Certification Number120002
Location221 Mahalani StreetWailuku, HI 96793 · Maui County
Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 96732 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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

87.03/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality76.78
Promoting Interoperability89
Improvement Activities40
Cost89.17

Referred Medical Equipment & Supplies CMS DME claims 3

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
3 suppliers44 claims44 services$117.11 avg. paid by Medicare
Portable oxygen concentrator, rental E1392
DME-Oxygen and Supplies · category DC002N
1 supplier13 claims13 services$38.26 avg. paid by Medicare
Portable gaseous oxygen system, rental; home compressor used to fill portable oxygen cylinders; includes portable containers, regulator, flowmeter, humidifier, cannula or mask, and tubing K0738
DME-Oxygen and Supplies · category DC000N
2 suppliers11 claims11 services$38.25 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 5

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

RYAN FUSATO M.D.
Internal Medicine
110 E KAAHUMANU AVE
KAHULUI, HI 96732
Maui County (808) 242-6464
JALIN K.A. FINAI AUD
Audiologist
110 E KAAHUMANU AVE
KAHULUI, HI 96732
Maui County (808) 249-8080
ELLECIA COOK D.O.
Dermatology
110 E KAAHUMANU AVE
KAHULUI, HI 96732
Maui County (808) 871-1730
JAYDEE GIRON
Otolaryngology
110 E KAAHUMANU AVE
KAHULUI, HI 96732
Maui County (808) 242-6464
EDIE R HAMILTON PA-C
Physician Assistant
110 E KAAHUMANU AVE
KAHULUI, HI 96732
Maui County (088) 711-7308

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 Derek Illastron's NPI number?

The NPI number for Derek Illastron is 1790949956. It was assigned to this individual provider in the NPPES registry on July 16, 2008.

Where is Derek Illastron located?

Derek Illastron practices at 110 E Kaahumanu Ave, Kahului, HI 96732. The listed phone number is (808) 242-6464.

What is Derek Illastron's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Derek Illastron enrolled in Medicare?

Yes. Derek Illastron is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Derek Illastron affiliated with any hospitals?

According to CMS data, Derek Illastron is affiliated with Maui Memorial Medical Center.

When was this NPI record last updated?

The NPPES record for Derek Illastron was last updated on March 19, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 years 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.