Ornicha Thititagul

Dr. Ornicha Thititagul is a geriatrician and lecturer at Siriraj Hospital, Mahidol University. She is a WHO–SEARO ICOPE Master Trainer and holds board certifications in geriatric and lifestyle medicine. She authored Thailand’s first case report on abacavir hypersensitivity in 2021.

Specialization & Clinical Focus

Dr. Thititagul treats healthy aging, preventive medicine, and neurological rehabilitation needs. She treats conditions in older adults, including Alzheimer's disease, dementia, and Parkinson's disease. The doctor also treats chronic pain and complications from strokes or spinal cord injuries.

The physician uses lifestyle medicine to improve nutritional outcomes for community-dwelling seniors. Dr. Thititagul performs geriatric assessments and designs rehabilitation programs to treat frailty and sarcopenia — a condition involving muscle mass loss. She also conducts health check-ups and body composition analysis for longevity.

Professional Experience

• Lecturer at the Geriatric Medicine Division, Mahidol University, Thailand.
• Geriatrician at Siriraj Samut Sakhon Geriatric Healthcare Center.
• Internal Medicine Physician at Siriraj Piyamaharajkarun Hospital.
• Geriatrician at PYONG Rehabilitation Group, Thonburi Thawiwatthana Hospital, and Samitivej Srinakarin Hospital.
• Observer at Concord Repatriation General Hospital, University of Sydney, Australia.
• Trainee at the National Center for Geriatrics and Gerontology (NCGG), Japan.
• Guest lecturer for the International Medical College and various national conferences.
• Technical advisor for the Department of Older Persons, Thailand, for volunteer training programs.
• Moderator for the dementia café and art program at Higashiura Fukushi Center.

Education & Board Certifications

• 2017 – Medical Degree (Second Class Honors), Srinakharinwirot University, Thailand.
• 2017 – Medical License from the Medical Council of Thailand.
• 2018 – Certification in Internship Training Program, The Medical Council of Thailand.
• 2021 – Diplomate of the Thai Board of Internal Medicine.
• 2021 – WHO–SEARO ICOPE Master Trainer for primary care physicians.
• 2023 – Diplomate in Geriatric Medicine, Thai General Medical Council.
• 2023 – Working with Children Check (WWCC) Permission, New South Wales, Australia.
• 2024 – Diplomate of the International Board of Lifestyle Medicine.
• CITI Program Certification in Biomedical Research and Good Clinical Practice.

Research & Academic Contributions

Dr. Thititagul publishes on geriatric nutrition and oncology. She served as the host team moderator for the 10th Asian Conference of Frailty and Sarcopenia in 2024. The specialist also contributes to national volunteer training programs regarding geriatric syndromes and aging.

Notable Publications

• "Comparison of Patient-Generated Subjective Global Assessment (PG-SGA) and Mini Nutritional Assessment (MNA) in hepatocellular carcinoma," Support Care Cancer, 2025.
• "Effects of a Specialized Oral Nutritional Supplement on Nutritional Outcomes in Older Adults: A Randomized Controlled Trial," Geriatrics, 2024.
• "Abacavir Hypersensitivity Reaction: The First Case Report in Thailand," J Med Assoc Thai, 2021.
• "The Association between Teenage Pregnancy and Low Birth Weight," SWU Medical Science Journal.