Internist
7974 Haven Avenue,
Suite 210
Rancho Cucamonga, CA
91730
Top reviews
I recently had my first visit, and I was very impressed. The doctor was incredibly attentive and caring, making me feel heard and valued as a patient. They took the time to understand my concerns and provided clear, thoughtful expShow morelanations. Tina was very friendly and professional, she does her work and got back to me right away which made the overall experience very pleasant. I'm looking forward to continuing my care here! Hopefully this service continues as is.
I had my first appointment with Dr. Thiagarajan today, 2/12/25. Finally, I was able to discuss everything about my health! I now have a medical professional I can trust, to discuss issues that have been bothering me for so long wiShow morethout getting the attention or correct treatment from my previous providers. Besides his knowledge and excellency, Dr. Thiagarajan is compassionate, kind and trustworthy!
Deepak ThiagaRajan, MD, is a highly regarded board-certified primary care internist. Dr. Thiaga Rajan provides primary care and geriatric medicine services at Rajan Medical Group for adults in and around the Inland Empire. He takes a holistic, patient-centered approach to managing acute and chronic health conditions.
Dr. ThiagaRajan earned his medical degree at St. George's University School of Medicine in Grenada, West Indies. He continued his internal medicine training with a residency at Norwalk Hospital - Yale School of Medicine in Norwalk, Connecticut. Dr. ThiagaRajan also received his geriatric medicine fellowship training at The Warren Alpert Medical School of Brown University’s Rhode Island Hospital in Providence, Rhode Island.
Prior to starting his private practice, Dr. ThiagaRajan served as the medical director for several hospitals throughout California. He co-authored multiple published medical articles that outline geriatric health concerns, including chronic disease management and elder abuse. Dr. ThiagaRajan also was a featured speaker at Brown University and Yale University hospitals and area senior centers.
Dr. ThiagaRajan was a recipient of the West Indies International Peace scholarship for multiple years and earned the United Kingdom’s International Award of His Royal Highness Duke of Edinburgh in 1996. When not serving his patients, he volunteers his medical expertise by providing geriatric health assessments to the local community.
At Rajan Medical Group, Dr. ThiagaRajan provides superior health care services that empower people to play an active role in their health. He specializes in the long-term management of chronic conditions that affect the elderly, including diabetes, arthritis, and dementia.
Anemia
Arthritis
Back Pain
Dementia
Diabetes
High Blood Pressure
Primary Care
Weight Loss
Locations (2)
Deepak Thiagarajan MD
7974 Haven Avenue,
Suite 210
Rancho Cucamonga, CA, 91730
Deepak V. Thiagarajan, MD
7974 Haven Ave
Suite 210
Cucamonga, CA, 91730
More About Dr. Deepak Thiagarajan
Practice
Deepak Thiagarajan MD
Hospital Affiliations
Specialties
NPI Number
1205052990
Provider's Gender
Male
Background and Education
Years practicing
21.0 years
Education
Awards
Reviews
This online referral system is very expeditious and efficient! I like it!!
This was my first visit to Dr. DT. and I was very impressed. Both the office personnel and Dr. DT exhibited professionalism throughout the time I was there. The appointment was on time, and Dr. DT was as thorough with his examination as he was with his demeanor. I look forward to retaining him as my Primary Care physician.
Good
He listens to my concerns, pays attention to details, very helpful.
I had my first appointment with Dr. Thiagarajan today, 2/12/25. Finally, I was able to discuss everything about my health! I now have a medical professional I can trust, to discuss issues that have been bothering me for so long without getting the attention or correct treatment from my previous providers. Besides his knowledge and excellency, Dr. Thiagarajan is compassionate, kind and trustworthy!
Excellent first visit. Receptionist very cordial and sweet. Dr Thiagarajan exemplary first impression. Very Attentive and involved.
I recently had my first visit, and I was very impressed. The doctor was incredibly attentive and caring, making me feel heard and valued as a patient. They took the time to understand my concerns and provided clear, thoughtful explanations. Tina was very friendly and professional, she does her work and got back to me right away which made the overall experience very pleasant. I'm looking forward to continuing my care here! Hopefully this service continues as is.
I was seen just a few minutes after my appointment time. My questions and concerns were addressed and Dr. Thiagarajan truly listened and was genuinely concerned with my health and well being. I never once felt rushed and will definitely continue to see him as my Primary Care Physician.
Good
The Doctor is very nice and respectful. The office staff are kind and things seem to run smoothly. When I contact them I always hear back within a day or two. I have no complaints!
Great
Dr. Rajan is very detailed in explaining the lab results and his findings and also explains how my medicines works. I always feel better after every appointment.
I've been seeing Dr. Deepak for about 2 years now. He is very knowledgeable and caring. I would recommend him very highly.
Able to see Dr without waiting weeks. Usually just a day or two.
Dr Rajan is always very thorough and professional. Very lucky to have him as my doctor
Dr Deepak is a wonderful doctor. Dr Deepak genuinely cares about his patients and their needs. Dr Deepak staff are very kind. Especially Vanessa. She a terrific nurse.
The most caring and understanding doctor I’ve ever met. He takes his time with me every time. He wants the best for me and that’s something rare these days.
Accessible: I called in after a notification regarding a lab result. Dr. Deepak made an appointment for me for the following Monday. Thorough: After reviewing all of the data and discussing my situation he took the initiative to locate and refer me to a specialist for my condition. Professional: Dr. Deepak followed through to insure that the referral met with the Insurance carrier's requirements for my care.
We the patients love dr. Deepak. He is a seasoned, and highly skilled Physician. As one of his regular patients l feel that I'm blessed to have come across an elite Physician
I recently visited Dr. Thiagarajan and had a great experience. He was attentive, listened to my concerns, and provided clear explanations about my condition. The staff was friendly, and the office had a welcoming atmosphere. I left feeling confident in my treatment plan. Highly recommend!
Thorough, takes the time to listen to and work with you regarding your concerns. Pleasant, excellent
Waiting time to being seen was fast. Clean office and very friendly staff.
Waiting to get seen was really fast doctor took time to listen to my concerns. Work on my referral being closer to my home. Really satisfied.
I love Dr. ThiagaRajan’s service he’s always so comprehensive. I love that he gives his individual attention and really listens to you and your needs. He’s very charismatic and very reassuring.
I was welcomed in a very short time and then seen by the doctor quickly with great care. They are well organized and recommendable.
Dr Deepak is great, highly knowledgeable and trustworthy. He cares about his patients health issues and follow up on any concerns. He took time to really listen to me and respond to all my questions. Everyone in the office is friendly and helpful.
He is a great doctor and responsive to your health needs.
Dr Deepak is the best doctor ! My grandpa hasn’t wanted to see a doctor in years but he feels confident in being seen by this doctor . Dr Deepak is a good listener and really cares about his patients and he really takes his time with his patients , our appointments are never rushed. I recommend this doctor to all my friends and loved ones who care for the elderly !
Dr. Thiagarajan is very patient and wonderful with his patients . He treated my grandmother until she died and he was the best doctor she’s ever had . He listens to your concerns , is very knowledgeable, and really cares for his patients . I know take my grandpa , he doesn’t like doctors but he likes this one !!
Doctor paid attention to all our concerns
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