Dr. Premaratne earned his medical degree from Riga Stradins University in Latvia before relocating to the United States for his medical training. He completed his Internal Medicine residency at St. John’s Mercy Medical Center in Saint Louis, Missouri, where he also served as junior faculty and Chief Resident.
Following his residency, Dr. Premaratne completed a rheumatology fellowship at the University of Kansas Medical Center. In 2012, he moved to Lake Havasu City, Arizona, to address the need for rheumatology care in Mohave County.
Dr. Premaratne earned his medical degree from Riga Stradins University in Latvia before relocating to the United States for his medical training. He completed his Internal Medicine residency at St. John’s Mercy Medical Center in Saint Louis, Missouri, where he also served as junior faculty and Chief Resident.
Following his residency, Dr. Premaratne completed a rheumatology fellowship at the University of Kansas Medical Center. In 2012, he moved to Lake Havasu City, Arizona, to address the need for rheumatology care in Mohave County.
The reviews listed below were collected independently of Arizona Arthritis & Rheumatology Associates through rater8. Each review represents an authentic and verified patient experience.
Dr Raj is awesome! He takes time to listen to your concerns and addresses each one. He seems to always be looking for a more efficient effective way to do things
(4 days ago)
Oct-2026
Dr Raj is so sincere and kind! He has made me feel better!
(5 days ago)
Oct-2026
He is fantastic!
(1 week ago)
Oct-2026
Dr Raj was amazing and very helpful
(1 week ago)
Oct-2026
Perfect
(1 week ago)
Sep-2026
Very caring
(1 week ago)
Sep-2026
I liked him.
(2 weeks ago)
Sep-2026
Always good visit. He takes the time to carefully explain everything. He’s the best!!
(3 weeks ago)
Sep-2026
Professional and kind
(3 weeks ago)
Sep-2026
A medical professional. Answered all my questions. Treated my disease successfully when others had no clue.
(3 weeks ago)
Sep-2026
AARA: Lake Havasu
2005 Injo Drive Suite 102 Lake Havasu, AZ 86403
Dr. Premaratne earned his medical degree from Riga Stradins University in Latvia before relocating to the United States for his medical training. He completed his Internal Medicine residency at St. John’s Mercy Medical Center in Saint Louis, Missouri, where he also served as junior faculty and Chief Resident.
Following his residency, Dr. Premaratne completed a rheumatology fellowship at the University of Kansas Medical Center. In 2012, he moved to Lake Havasu City, Arizona, to address the need for rheumatology care in Mohave County. He managed his own practice until merging with Arizona Arthritis & Rheumatology Associates (AARA) in August 2026.
Dr. Premaratne has also completed specialized training in musculoskeletal ultrasound-guided injections to improve patient diagnosis and outcomes. He currently maintains admitting privileges at Havasu Regional Medical Center, where he serves on the Board of Trustees.
In his spare time, Dr. Premaratne enjoys traveling with his family and participating in outdoor activities.
Dr Raj is awesome! He takes time to listen to your concerns and addresses each one. He seems to always be looking for a more efficient effective way to do things
Dr Raj is so sincere and kind! He has made me feel better!
He is fantastic!
Dr Raj was amazing and very helpful
Perfect
Very caring
I liked him.
Always good visit. He takes the time to carefully explain everything. He’s the best!!
Professional and kind
A medical professional. Answered all my questions. Treated my disease successfully when others had no clue.