About The Maxwell Group

The Maxwell Group is a superior internal medicine practice located in Sun City, Arizona, specializing in geriatric care in a 55+ community. Led by skilled internal medicine specialists, The Maxwell Group provides comprehensive and compassionate care in a patient-friendly environment.

Highly trained providers empower patients with the knowledge to live healthy lives with a low risk of chronic diseases. They offer high-quality medical care in a warm, welcoming, and comfortable environment.

The Maxwell Group provides annual wellness visits, sick visits, respiratory care, cardiac testing, chronic disease management, diabetes management, and comprehensive geriatrics services for middle-aged and older adults.

People struggling with illnesses, injuries, high blood pressure, heart disease, diabetes, chronic obstructive pulmonary disease (COPD), osteoporosis, and other chronic conditions can rely on the experts at The Maxwell Group for exceptional care.

Specialists at the practice get to know each patient, giving them plenty of time with their provider and personalized attention. They thoroughly address questions and concerns, so appointments never feel rushed.

The internal medicine specialists at The Maxwell Group look forward to caring for their patients and welcoming them to the practice.

Call the office or use the online booking feature today to schedule an appointment at The Maxwell Group.

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The Maxwell Group is committed to providing comprehensive, compassionate care in a patient friendly environment. We empower our patients with knowledge to achieve their healthcare goals, to live healthy lives and to prevent disease. You can count on the experience of our Internal Medicine physicians at The Maxwell Group for high quality, personalized medical care.

Attention Medicare Patients

Please create an account with Mymedicare.gov and enter your primary care doctor’s name. Select “add as my primary clinician”. Selecting your primary care physician allows patients to take full advantage of the many ACO (accountable care organization) benefits afforded to patients when aligned with their PCP at The Maxwell Group.

Chronic Care Management (CCM) Program

Do you need help managing your health? Do you need someone to talk to regarding
your health care needs?
Do you need help with your medications?
This program is covered by Medicare and Medicare Advantage insurances.

Remote Patient Monitoring (RPM) Program: Free remote monitored devices per your doctor’s orders for:
Blood Pressure, Blood Sugar, Weight Control
These devices send via blue tooth technology to the monitoring location.
Care Managers monitor these devices.
ASK us today if you qualify.

Exciting Maxwell Group News

Please help us welcome the newest additions to our practice Dr. Rayette Casiano and  
Dr. YuJie Shui.

Dr. Casiano is Board Certified in Internal Medicine and has been practicing for over 20 years. Dr. Shui is Board Certified in Family Medicine and has just completed his
residency training at Kingman Regional Medical Center in Kingman, Arizona. Please inquire now regarding appointment opportunities.

Dr Medina is knowledgeable, thorough and attentive. It is important to me that she knows what she knows and when something is different than her skill set, she refers me to a subject matter expert. Some doctors aren't so wise. She is patient and answers questions, which is important to me so I can better understand my role in improving my health or getting well. I referred her to my wife, who is now her patient, need I say more.

John T. | Nov 04, 2022

Dr. P has been my doctor since I moved to Arizona 21 years ago .He has always taken good care of me. As I reach the twilight years and go through the aging problems ,like I am now, I have all he faith in Dr. as I have the last twenty one years. As he said "we're in this together" I would implore anyone who is looking for a great internist to use Dr. P. Richard C .Wiles a friend and patient

Richard W. | Nov 03, 2022


Bruce S. | Nov 03, 2022


Scott H. | Nov 03, 2022

Always an excellent visit with Dr. Piette. He always listens to your concerns or questions. I am very happy to have found him available to be my primary care physician.

Scott N. | Nov 03, 2022

He took the time to listen to your concerns. Then went over all your results and provided a plan of action going forward.

Brenda N. | Nov 03, 2022

It was a pleasure to visit with this doctor, you can tell when someone cares I hope she is my doctor for a very long time Gene Turiano Sr.

Gene T. | Nov 03, 2022

Sam Bob | Nov 03, 2022

Dr Shui was very helpful in recommending a solution for a chronic knee problem. His suggestion provided almost instant relief.

Kenneth H. | Nov 03, 2022

Dr. Palanati went over my results and he's given me direction. Now it's up to me.

Thomas H. | Nov 03, 2022

I find Dr. Narayanan very kind and thorough. Doesn't rush you through your appointment.

Madelon J. | Nov 03, 2022

One of the best Dr visits in a long time.

Skelli Dedmon | Nov 03, 2022

I like the fact that Dr Narayanan is a young doctor and teaches geriatrics. He is not afraid to consult with other doctors for over all heath of the patient to provide him with complete knowledge of the person he is serving. He takes his time to consult and listen which is key for us old folks.

Joan C. | Nov 03, 2022

George Morgan | Nov 03, 2022

Rocco Giurlanda | Nov 03, 2022

Great staff and wonderful Doctor Palnati

Karen B. | Nov 03, 2022

Jim Brazelton | Nov 03, 2022

Really feel comfortable seeing Dr Medina

Becki B. | Nov 03, 2022

Steven Shockome | Nov 03, 2022

I have always felt that I am getting the best care with Dr Narayanan.

Mary M. | Nov 03, 2022

Listens and is very personable. She agrees with my own beliefs that diet, exercise, healthy exposure to sunshine, practicing a healthy mindset all make difference in health. It is through hard work and not always achievable or even curative. In which case Dr. Casiano will prescribe the correct prescription medications and if needed can also refer her patients to the correct specialist.

Willard K. | Nov 03, 2022

John Suhumskie | Nov 03, 2022

Totally have faith in my new pcp

Robert Walstead | Nov 03, 2022

c seymour | Nov 03, 2022

Very thorough.

Lori M. | Nov 03, 2022

Knowledge and caring Doctor

Charles S. | Nov 03, 2022

Dr. Pipette is a caring Doctor. He is very thorough and listens to his patients. We have been with him for 12 years and are thankful we found him

Betty Lust | Nov 03, 2022

Very interested in my health. Takes time to listen. Makes you feel confident and comfortable in his presence.

Butch E. | Nov 03, 2022

Kerry Grant | Nov 03, 2022

Dr Palnati has always been punctual with timing of our appointments, very courteous & listens carefully to our concerns & addresses them appropriately. He clearly reassures us about what test results are not of concern but on the other hand which of them need our attention to be dealt with as needed.

Lois R. | Nov 03, 2022

Just started going there and so far am very happy with the service and attention.

Bill Mosienko | Nov 03, 2022

Discussed my concerns and appreciated feedback. Physical exam and electro cardiogram done. Will schedule lab work and follow up.

Donelle D. | Nov 03, 2022

Dr. Medina, although knowledgeable, could not wait to move on to the next patient when we go to see her. She would not stay in the room and discuss how I was doing, she left and had her assistant come back. It made us feel that she didn't care about my health at all. All of this after a hospital stay for mental health issues. Very sad.

Joyce K. | Nov 03, 2022

John Dockham | Nov 03, 2022

Dr Palnati and his staff always take really good care of me!

Glenn | Nov 03, 2022

First time seeing Dr. Shui. I was comfortable. The med he prescribed is working. I’ve 24 more hours left taking this med. I’m hopeful the condition will not return.

Katherine W. | Nov 02, 2022

With out question Dr. Johnson is the best physician I've been blessed to see. He is professional, caring, un-hurried, through, attentive to detail. He honestly cares for his patients and their outcomes.

Robert Shelton | Nov 02, 2022

Quality geriatric care can be hard to come by, but my experience with the Maxwell group denies that statement. From timely appointments to great follow-up, I've had no complaints. I find it especially comforting to know that my young primary physician is fully tuned in to elderly health concerns and honestly cares about guiding and helping patients with their aging health issues. Of course, learning to say and spell Narayanan was a steep learning curve, but well worth it!

judith darrh | Nov 02, 2022

I was very happy with my visit.

Catherine K. | Nov 02, 2022

Dr. Palnati is very caring

Norma B. | Nov 02, 2022

Love dr Piette. He has been so helpful ver the years to me and listens to my concerns. We need more drs like him

Candee A. | Nov 02, 2022

Very caring, gives his time generously and very knowledgeable. This was my second visit and I’m very glad to have found him!

Sherry C. | Nov 02, 2022

Karen Bratvold | Nov 02, 2022

Good report, but I felt she was a little short with me and rushed thru it quickly.

Marilyn E. | Nov 02, 2022

Kathy Eckhoff | Nov 02, 2022

Kenneth Hill | Nov 02, 2022

Jeff Skaggs | Nov 02, 2022

Doctor Johnson A, staff C

Kenneth M. | Nov 02, 2022

I felt like I found a wonderful internist who cares about her patients!

Gerry V. | Nov 02, 2022

Dennis Wolf | Nov 02, 2022

Excellence first meeting wih DR Shui, I believe he will take good of me.

Tom M. | Nov 02, 2022

Dr. Palnati and all the staff are so friendly and thorough. He gives great patient care but it feels as if you’re visiting with an old friend.

Jennifer P. | Nov 02, 2022

Daniel Enroth | Nov 02, 2022

Charles Schwartz | Nov 02, 2022

Royal Halvorsen | Nov 02, 2022

Always great to visit with Dr. Piette

Janine E. | Nov 02, 2022

An amazing doctor ! So well liked !

Kari W. | Nov 02, 2022

Dr Casiano, performed all required duties.

Wayne V. | Nov 02, 2022

Carolyn Schnickels | Nov 02, 2022

This is the first time I saw Dr. Casino and was very pleased. She is very competent and thorough. She answered all my questions and did not rush the visit.

DAVE B. | Nov 02, 2022

I was very impressed with Dr Shui. I saw him in the absence of MY PCP, and as a follow-up, it was obvious that he had read my chart before seeing me, which is often NOT the case. He was very knowledgeable, explained things in terms I could understand, and was very kind and empathetic. If I were looking for a new PCP, he would be a TOP PICK! I highly recommend him.

Patricia Heathershaw | Nov 02, 2022

Dr. Palnati, and his assistant Maria, truly care about their patients. We have been seeing Dr. Palnati for many years and have complete faith in him. We have always been more than pleased with his services.

Northwest Valley church of Christ | Nov 02, 2022

This was my second visit with Dr Shui and I was more than pleased with the quality of care and the whole process. He is a very good listener, offered a range of opinions going forward, and follow on plans were discussed. His MA, Amber, is also a very positive contributor to the experience in his office. Will definitely recommend him to friends and family.

Harry Emerson | Nov 02, 2022

personable and caring

Dennis J. | Nov 02, 2022

very good

Donald H. | Nov 02, 2022


Gary B. | Nov 02, 2022

Excellent - our best to him as new doctor

Stanley D. | Nov 02, 2022

Dr. Piette was very patient and clearly explained all medical issues. He allowed me plenty of time to ask questions and conducted himself in a very professional manner.

Theodore I. | Nov 01, 2022

Always very efficient, very knowledgeable. Staff is very friendly. Appts are prompt and on time. I love Dr. Medina. She has been my Dr. for many years.

Cheryl A. | Oct 31, 2022

Nurse Tammy, I like you. Need to schedule an appointment PLEASE!

Ricky L L. | Oct 27, 2022

Dr Palnati has RESTORED my faith in doctors. He goes above and beyond for his patients.

Gabriella Attryde | Oct 27, 2022

Dr. Srinivasa Palnati is the BEST! I believe if it was not for him I would not be here today! He made my other doctors listen to me and I had a second Open Heart which gave me my life back! I am so thankful for him!

Jodi P. | Oct 27, 2022


Ronald A. | Oct 26, 2022

pleasant, professional, listens, communicates clearly, and runs fairly close to schedule

Robert Whitler | Oct 26, 2022

All my experiences have gone very well for both my wife and I.

Paul R. | Oct 26, 2022

Professional Experience

Kathleen P. | Oct 26, 2022

Dr is patient,explains clearly and is very personable. He cares!

Norman H. | Oct 26, 2022

Dr Piette is a great doctor. I feel that he always listens to my concerns and provides answers that I can understand.

Pamela O. | Oct 26, 2022

Dr. Medina is a wonderful, caring doctor. She sat on the floor to change my 99 yr old mother’s leg bandage.

Jeanie Cole | Oct 26, 2022

I had a very good experience, exceptionally thorough, & pleasant, with the tests performed. Dr. Casiano explained all to both my husband and me. I am very pleased & confident in having her as my personal physician at Maxwell, and most certainly see her as being a five star physician.

Jean C. | Oct 26, 2022

Very personable

Rhonda F. | Oct 26, 2022

Dr. Piette is very kind, extremely knowledgeable and has a calming disposition. He is a wonderful doctor and has the ability to put his patients at ease.

Kim L. | Oct 25, 2022

Bheelek-E Diasham | Oct 25, 2022

Catherine Huffman | Oct 25, 2022

Maxwell Group is a terrific medical practice. I recently was a patient of Dr. Casiano who is new to the Medicare-focused practice. (My regular PCP did not have an opening. Dr. Casiano was engaging and concerned. She listened and paid attention to me. She provided care and suggestions in a friendly and straightforward way. I recommend Dr. Casiano to anyone seeking a PCP.

Judy Schneider | Oct 25, 2022

Dr. Medina & I discussed my fall which broke my wrist in 3 places. She has suggested that since I have fallen & broken bones I should use a cane or walker. She had that ordered for me. Dr. Medina is very caring & SHE POINTED OUT MY KIDNEY PROBLEM. By doing this I am under the care of a kidney doctor. This could save my life.

Patricia B. | Oct 25, 2022

Dr. Palnati actually looks at your charts and paperwork before he comes in the room. He is very attentive to what you say and takes the time to explain things to you.

John & Pam Vawter | Oct 25, 2022

great as always

Cecil A. | Oct 25, 2022

This was my first visit with Doctor Johnson and I really enjoyed the appointment. I believe that we will get along just fine.

David D. | Oct 25, 2022

Professional care provided in a caring, approachable manner.

Clara B. | Oct 25, 2022

Juniper Ridge Stretch & Strength | Oct 25, 2022

I am totally comfortable and Pleased with Dr. Medina and she has my complete trust.

Paul T. | Oct 25, 2022

Evaluated leg pain and referred for x-ray

Mary Louise S. | Oct 25, 2022

As usual Dr. Palnati was my pleasure to have as my primary. He is friendly and profession and helpful

Robert C. | Oct 25, 2022

Dr. Casiano listens to you very well.

Rebecca M. | Oct 25, 2022

Dr Palnati is a caring, compassionate Dr who always makes sure you get the best care and takes his time with you as well as answering any questions that arise.

Cathy H. | Oct 25, 2022

Timely, Thorough, Efficient!

Daniel K. | Oct 25, 2022

Carl Wargula | Oct 25, 2022

Dr. NARAYANAN is an excellent physician. The Maxwell Group practice as a whole is great with excellent customer service and a professional, helpful staff

Katherine Varchetto | Oct 25, 2022

Easygoing, direct, compassionate and good listener. Took care of all my annual needs quickly and efficiently. Love Dr. Casiano’s demeanor and professionalism. Her medical assistant Melissa is just as amazing!

Jennifer Upsher | Oct 23, 2022


For your convenience, The Maxwell Group accepts a variety of insurance plans. This list is not entirely inclusive of all plans we accept. For specific insurance plan inquiries & eligibility, please contact your insurance provider or call our office.