Dr. Singh is my parents’ cardiologist. I have accompanied my father to appointments and have seen the wonderful care my father gets at the office. The staff is friendly and responsive. Dr. Singh always takes time to listen and never seems rushed. When my father was diagnosed with a complicated heart condition Dr. Singh immediately contacted his colleagues at the Mayo Clinic to make a referral. I am a physician myself and believe I am a good judge of a medical practice. I am grateful that Dr. Singh takes such good care of my parents and highly recommend him.

Absolutely amazing service! From the booking to the visit. Dr Jennifer listened to my moms needs and was very compassionate and understanding. I think I have found my moms next cardiologist!

It’s been a long time since I have had an office visit this good. From beginning to end, everyone was kind, professional, cheerful and efficient. Dr Singh was very nice, honest and even wise. Gave me a lot to think about. Thank you all for what you do.

Im a pharmacist, they call nurses n pharmacists the worst patients. I want to know I have the very best. I say this only due to his negative evals. I liked Dr. Marshall very much. I fired my last cardiologist. I think Dr. Marshall is very capable n an excellent cardiologist or i wouldnt have continued seeing him. I no longer live in this state so i have not seen him. I loved his dogs!!!! But their teeth need brushing Doc!!! He was a little rough on me i thought about my weight, sometimes a gentler approach might be more effective. I would still be seeing him if i lived in Tucson. Thanks for all your help Doc! Take good care of those pups!

After one look at my records, Dr Singh found an issue that my primary care doctor had overlooked for 10 years.

Dr Singh has been my cardiologist for many years. He is very kind, caring and knowledgeable. I would highly recommend him

This place is amazing! Im Highly satisfied and Highly recommending Dr. Singh😊Everyone was so kind, caring, and very thorough! I called yesterday and the receptionist got my referral faxed from my Dr., got insurance authorization, and scheduled my appointment for the next day, all in under 10 mins!! My check in was so fast, and friendly. The echo tech and the ekg tech were so informative and awesome. Dr. Singh was Amazing, so thorough and nice. Everyone made me feel so comfortable, and of course, I must mention Lily, their adorable dog, sweetest lil greeter ever!! A great place😊🐕❤❤❤

My husband is a patient. He is very good, understanding, but it takes a while to see him. He is of course very busy. Wish he would take more time to explain ❤️ problems to me. I am not certain about my husbands condition at this time

Of all the Doctors I have seen in my life ( Im 75) Timothy Marshall is in the top 3.An amazing cardiologist. Through in every respect.Any negative reviews or negative reaction to him or his staff reflects to a patient with problems way beyond the need for a cardiologist.

I have called 3 times and left message on the 4 call I received a call back. The office has none of my records. She told me they get rid of old records by law. WHAT? So where is my medical history?She said they destroy it.You cannot see doctor Marshall he has not been there since before Thanksgiving 2018.The doctor is now Dr. Singh. I asked about the cost for the 1st visit was. She couldn’t tell me. OkI’m going to find another cardiologist.Sorry to not have Dr. Marshall although the business still has his name hmm.

I was referred to the cardiologist due to a potential problem during pregnancy. The cost of the visit should have been covered by the insurance (according to my insurance agency) but because the billing department used the wrong code, I was forced to pay a substantial amount for the visit. I and my husband called several times to ask them to change it. The insurance company said theyd cover it if they just resubmitted the claim using the correct code. They refused and were VERY unprofessional during the request. I will never be back after this experience.

This is NOT a review of Dr. Marshall but his office staff. I have been a patient of Dr. Marshall since I moved to Tucson. He has always been thorough and competent. I haven’t seen him for two years but referred my new husband to him. I am astounded at the change since I was last there. Incompetency abounds! I have called every single day this week for a prescription renewal. I left two messages (no callback). Then spoke to someon Two different times who said they would call it in. I waited for 15 minutes to pick this up for two consecutive days and the pharmacy said that it was never called in either time. My husband waited for more than 1.5 hours during his appointment to get into the exam room then the office tried to put another patient in there. They also put the wrong patient’s file in the room with my husband. They failed to call in his prescription as well then lied and said that they had, yet were too busy chatting with another staff member when the prescription was handed to them. Our pharmacy is very squared away and never have had this problem so I know it’s not them. WHAT IS GONG ON DR. MARSHALL?? Sadly, we will be leaving this doctor because of his sloppy, careless and untruthful staff. I wouldn’t be surprised if they are in violation of HIPAA because of their negligence and ineptitude.

Dr Singh is an exceptional Cardiologist in Tucson .. Very caring and thorough with his patients ..

Amazing doctor and staff = amazing results!

Dr. Marshall is an outstanding cardiologist who is very thorough and carefully explains procedures and test results. None better!

I been with this doctor for 20 yrs and I would never go to a different one..

Excellent Doctor

Very knowledgeable and personable