About
Dr. Stefan Carl Harmeling leads Aloha Nui DPC in Hilo, Hawaii as its founder and sole physician. He earned his undergraduate degree at Florida State University in Tallahassee before completing his medical degree at the University of Florida College of Medicine in Gainesville. His internship and residency training took place at White Memorial Medical Center in East Los Angeles, California.
Early in his career, Dr. Harmeling participated in medical missions in Haiti in 1997 and East Africa and Kenya in 2001. He went on to practice family medicine at the Venice Family Clinic and Bay Clinic in Pahoa before serving as a hospitalist at Hilo Medical Center through Team Health. He opened Aloha Nui Family Practice in 2007 and transitioned it to a direct primary care model in 2019. He currently serves as Medical Director at Hawaii Community Correctional Center. His clinical passions include integrative health, preventive care, hormone therapy, opioid use disorder treatment, and end-of-life care. He holds board certification and brings over 18 years of experience across family medicine, functional medicine, and preventive medicine.
Education & Training
Undergraduate
Florida State University, Tallahassee, Florida
Medical School
University of Florida - College of Medicine, Gainesville, Florida
Residency
Internship/Residency, White Memorial Medical Center, (East) Los Angeles, California
Additional Training
Haiti Medical Mission (1997); East Africa/Kenya Medical Mission (2001)
Certifications
Conditions Treated
Who is Dr. Harmeling right for?
Dr. Harmeling works well with adults across a wide range of health needs and life stages. Patients managing chronic conditions like low testosterone, depression, anxiety, osteoporosis, or opioid use disorder benefit from his integrative approach. He serves men and women, seniors, transgender patients, and adolescents. Patients who value a long-term relationship with a physician who takes whole-person health seriously will find him a strong fit.
Frequently Asked Questions
Dr. Harmeling treats a broad range of acute and chronic conditions. These include low testosterone, erectile dysfunction, opioid use disorder, depression, anxiety, osteoporosis, arthritis, dementia, heart disease, menopause, menstrual disorders, adrenal fatigue, cancer, lupus, epilepsy, multiple sclerosis, rheumatoid arthritis, HIV, AIDS, PTSD, chronic pain, nausea, seizures, and muscle spasms.
Yes, Dr. Harmeling holds board certification as a medical doctor. His clinical expertise spans family medicine, preventive medicine, and functional medicine, supported by more than 18 years of practice experience.
Dr. Harmeling earned his medical degree at the University of Florida College of Medicine in Gainesville. He completed his internship and residency at White Memorial Medical Center in East Los Angeles, California.
Dr. Harmeling takes an integrative and holistic approach, addressing the physical, mental, and emotional dimensions of health. He focuses on building a genuine partnership with each patient to reach and maintain whole-person wellness. His care style draws on decades of experience in diverse settings, from inner-city clinics to international medical missions.
Yes, Dr. Harmeling offers both testosterone replacement therapy for men and estrogen therapy and hormone replacement therapy for women. The TRT Clinic includes an initial consultation for $199 and quarterly follow-ups for $99, available in-clinic or via telehealth.
Yes, Dr. Harmeling offers medication-assisted treatment using Suboxone, which combines buprenorphine and naloxone, as part of the DPC membership. He tailors each MAT program to the individual patient using FDA-approved medications alongside counseling and behavioral support.
Dr. Harmeling sees patients across all life stages, including adolescents, adults, and seniors. He serves women, men, and transgender patients. His practice also welcomes patients managing substance use disorders, chronic disease, hormonal health, and preventive care needs.
Yes, Dr. Harmeling provides medical cannabis certification through Aloha Nui Organics for patients with eligible medical conditions. 50. Aloha Nui membership is not required for this service.
Yes, Dr. Harmeling performs CDL/DOT physicals, also known as PUC physicals, for commercial drivers. 99. The practice offers same-day or next-day appointments for this service.
Dr. Harmeling offers cosmetic aesthetic services through Aloha Nui Aesthetics, including Botox, IPL, microneedling, OxyGeneo facials, VoluDerm skin resurfacing, and laser hair removal. Aloha Nui membership is not required to access these services.
Doctor profile last updated April 2, 2026