4.4
25 Ratings with 5 written Reviews
Summary
Dr. Derek Illastron specializes in internal medicine, providing comprehensive care for adult patients with a wide range of health conditions. He earned his medical degree from Ross University School of Medicine and completed his residency at UMDNJ. With 21 years of experience in practice, Dr. Illastron brings extensive knowledge to his patient care. He is fluent in Chinese and Spanish.
Dr. Illastron practices at Maui Memorial Medical Center and Kula Hospital, serving patients throughout Wailuku and Kula, Hawaii. He focuses on managing high blood pressure conditions, including hypertensive emergencies and pediatric hypertension cases. His diagnostic expertise includes performing complete blood counts, chemistry panels, and creatinine clearance tests to monitor kidney function and overall health. Patients have given Dr. Illastron an average rating of 4.4 on Vitals.
Dr. Illastron practices at Maui Memorial Medical Center and Kula Hospital, serving patients throughout Wailuku and Kula, Hawaii. He focuses on managing high blood pressure conditions, including hypertensive emergencies and pediatric hypertension cases. His diagnostic expertise includes performing complete blood counts, chemistry panels, and creatinine clearance tests to monitor kidney function and overall health. Patients have given Dr. Illastron an average rating of 4.4 on Vitals.
Overview based on verified provider data
Quick Facts
- 21 years of experience
- speaks Chinese, Spanish
- Umdnj
- 5 written reviews
- 1 specialty
- 7 areas of expertise
- 1 board certification
- 2 hospital affiliations
- 2 office locations
- Male
Patients’ Perspective
- Gave an accurate diagnosis
- Had a good bedside manner
- Spent time with me
Based on patient feedback. Read the reviews
Office Locations
Dr. Derek Reyes Illastron has 2 locationsCompare with Similar Doctors
 |  |  |  |
| Dr. Derek Reyes Illastron, MD | Dr. Elaine Marie Williams, DO | Dr. Ryan Seiichi Fusato, MD | Dr. Constantin Novoselsky, MD |
| Internal Medicine | Nephrology | Internal Medicine | Hospital Medicine |
| Accepts New Patients | Accepts New Patients | ||
| 21 Years of Experience | 45 Years of Experience | 28 Years of Experience | 26 Years of Experience |
| No Virtual Visit Option | No Virtual Visit Option | No Virtual Visit Option | No Virtual Visit Option |
| Speaks Chinese, Spanish | Speaks English | Speaks Spanish, Chinese, Tagalog, English | Speaks Spanish, Chinese |
| Wailuku , HI | Wailuku , HI | Makawao , HI | Wailuku , HI |
| Med School: Ross University School Of Medicine | Med School: Kansas City University Of Medicine & Bioscience College Of Osteopathic Med | Med School: University Of Hawaii At Manoa | Med School: Crimea State Med Inst |
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by Dr. Derek Reyes Illastron
Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.
Medical Specialties
Dr. Derek Reyes Illastron has the following specialty
Specialty Expertise
Dr. Derek Reyes Illastron has the following 7 areas of expertise
Certifications, License, & Education
21 Years Experience
Dr. Derek Reyes Illastron holds an expired medical license in the state of Hawaii.
Medical License
Medical Doctor with an expired medical license in the state of Hawaii that expired in 2026.
Education & Training
Residency
Completed their residency at Umdnj.
Medical School
Graduated from Ross University School Of Medicine in 2005.
NPI Number
Dr. Illastron's NPI number is 1790949956.
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Frequently Asked Questions
- Is Dr. Derek Illastron accepting new patients?
- Dr. Derek Illastron has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
- Does Dr. Derek Illastron accept virtual/telehealth appointments?
- Dr. Derek Illastron has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
- Where is Dr. Derek Illastron's office located?
- Dr. Derek Illastron's office is located at 221 Mahalani St, Wailuku, HI, 96793.
- What languages does Dr. Derek Illastron speak?
- Dr. Derek Illastron speaks Chinese and Spanish.
- Does Dr. Derek Illastron accept my insurance?
- You can see the insurance plans that Dr. Derek Illastron accepts on their Vitals profile.
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