Cardiologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Chiropractor providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Dentist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Dermatologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Family Physician providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
OB-GYN providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Ophthalmologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Orthopedic Surgeon providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Pediatrician providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Physical Therapist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Podiatrist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Psychiatrist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Mohamed Abdelrahman, MD, is a cardiologist and clinical cardiac electrophysiologist at Arizona Heart Arrhythmia Associates, with locations in Phoenix, Avondale, Tempe, Chandler, Sun City, Dewey, and Prescott Valley, Arizona. Dr. Abdelrahman joined the team in 2020 and is well-known for his exceptional rapport and dedication to his patients. He strives and is committed to providing compassionate, sincere, and honest patient care.
Dr. Abdelrahman was born and raised in Cairo, Egypt. He earned his medical degree from Ain Shams University, one of the oldest and most prestigious medical schools in Egypt. He then pursued further medical training in the United States and completed his internal medicine residency at the University Hospitals in Cleveland, Ohio, and his cardiology training at Geisinger Medical Center in Pennsylvania. During his training, Dr. Abdelrahman was acknowledged by receiving multiple awards, including the Fellow of the Year award and the award for Academic Excellence.
To further his training, Dr. Abdelrahman completed his cardiac electrophysiology training at Weill Cornell Medical Center in New York. He was specially trained in advanced electrophysiology diagnostic and management techniques, including complex ablation of atrial and ventricular arrhythmias and robotic-assisted mapping and ablation. He also trained in complex device implantation, including biventricular devices, bundle pacing subcutaneous defibrillators, leadless pacemakers, and complex laser lead extraction.
Dr. Abdelrahman also actively participates in research and is a fellow of the American College of Cardiology. He has authored numerous manuscripts and abstracts and has presented in multiple national and international cardiology and cardiac electrophysiology meetings.
Dr Balakrishnan is a cardiologist and clinical cardiac electrophysiologist at Arizona Heart Arrhythmia Associates. He is thorough, compassionate, and unwavering in his commitment to providing quality care for his patients.
Dr Balakrishnan was born and raised in Coimbatore, India. He completed his medical degree from Coimbatore Medical College and Hospital, India, and moved to the United States to pursue further medical training. He completed his Internal Medicine residency at the University of Arizona College of Medicine - South Campus and his Cardiology and Clinical Cardiac Electrophysiology fellowships at the University of Arizona College of Medicine - Tucson Campus hospitals. He is the recipient of several awards throughout his training, including outstanding performance in Cardiology and Electrophysiology, outstanding graduating fellow in Cardiology, and the Mark J. Friedman Outstanding Fellow Award. He also served as the chief fellow during his Cardiology fellowship at the University of Arizona. He has authored numerous publications in Cardiology and Electrophysiology and has presented at several national and international conferences.
Dr Balakrishnan joined the practice in 2024. He is trained in complex device implants, ablation of atrial and ventricular arrhythmias, and laser lead extractions.
Patrick lives in Gilbert, AZ and is thrilled to bring his skillset closer to home. Patrick’s undergraduate degrees in Neuroscience and Psychology were attained at Washington State University, for which he was awarded the ‘Honored Graduate’ upon commencement and was the department representative for the College of Veterinary Medicine, Comparative Anatomy, Pharmacology, and Physiology. After a brief career in histopathology, nanoparticle research, and bioengineering, he moved to Boston to begin managing the Special Chemistry and Infectious Disease departments of the highest volume clinical laboratory in the country. He still provides laboratory direction and oversight for in-office labs.
From the Northeast, he took his experience to matriculate to a graduate program in Physician Assistant Studies at A.T. Still University in Mesa, AZ. He is a board-certified Physician Assistant. Arizona has been home ever since. Patrick practiced the majority of his career in Internal Medicine and as a consultant for various specialty clinics in Arizona and Oregon. Clinical innovations and telemedicine are his primary focus, as delivering upon the need for more affordable and accessible patient-centered healthcare with maximum efficacy and efficiency is his passion.
Additional educational experience includes certification in Cognitive Behavior Therapy (CBT) from the Beck Institute, clinical doctorate studies in Behavioral Health at Arizona State University, and graduate business school at Harvard. Patrick is a member of the American Psychological Association, an International Member of Psi Chi, the Association of Physician Assistants in Psychiatry, the Harvard Extension Business Society, and the American Society for Men’s Health.
Vijay Swarup, MD, FACC, FHRS, is one of the physicians at Arizona Heart Rhythm Center, which has locations in Phoenix, Peoria, Gilbert, and Prescott, Arizona. He has been practicing clinical cardiac electrophysiology in Arizona since 2002. Before joining the practice, he completed a fellowship in clinical cardiac electrophysiology at the University of Chicago Hospitals and Loyola University Medical Center in Chicago, Illinois.
Dr. Swarup earned his bachelor's and medical degrees at the University of Delhi in New Delhi. He continued his education at St. Louis University School of Medicine, completing an internal medicine residency and a research fellowship in molecular cardiology. He completed a Cardiovascular Disease fellowship at the Thomas Jefferson University Hospital in Philadelphia. He then pursued a clinical cardiac electrophysiology fellowship at the University of Chicago Hospitals and Loyola University Medical Center in Chicago, Illinois.
Dr. Swarup has received specialized training in performing complex arrhythmia treatments, including trans-catheter ablations. He has a special interest in three-dimensional electroanatomical mapping techniques, left atrial appendage occlusion techniques, and ablative therapies for atrial fibrillation and ventricular tachycardia.
In Arizona, Dr. Swarup was among the first to perform epicardial and endocardial 3D mapping guided ablation of ischemic ventricular tachycardias, open irrigated ablations, robotic catheter ablations for arrhythmias, and implantation to left atrial appendage occlusion devices. Dr. Swarup has some of the most extensive experience in AF and VT ablations and implantation of LAA occlusion devices in the country. Dr. Swarup is also an active researcher of new ablation techniques, having authored numerous abstracts and manuscripts. He has been the principal investigator in many research protocols investigating promising new ablation techniques and devices for the treatment of arrhythmias.
Dr. Swarup is board certified in cardiovascular diseases and clinical cardiac electrophysiology.
Welcome to Sanctum Internal Medicine
At Sanctum Internal Medicine, we believe primary care should be personal, accessible, and rooted in trust.
Sanctum is more than just a clinic—it’s a refuge for thoughtful, compassionate, and high-quality medical care. With same- or next-day appointments, minimal wait times, and a personalized approach, we help you stay well, not just get well.
We provide comprehensive, evidence-based internal medicine with a focus on preventive care, chronic disease management, and meaningful doctor-patient relationships. We believe in transparency, clarity, and competency to foster doctor-patient relationships.
Let us be your partner in healthcare.
Amy Webster NP is dedicated to ensuring that patient's have someone to walk with them through any stage in their healthcare journey. She specializes in relational based medicine, forming strong partnerships with her patients to ensure they reach their goals through education and understanding of their own individual healthcare picture. She knows that healthy looks different for many people and she approaches healing through natural / holistic medicine with the ability to implement more traditionally western medicine practices when needed. She incorporates functional medicine, laboratory data, and evidence based practice into her treatment plans. She loves seeing the health that her patient's achieve when they start to make changes after being equipped with a plan that is uniquely tailored to the individual.
Dr. Nagaiah received his medical degree from MGR Medical University in India and has been in practice for more than 20 years. His residency and internship were completed at Mercy Catholic Medical Center in Pennsylvania, and he completed a fellowship at West Virginia University. He earned a Masters in Clinical Research from the MGH Institute of Health Professions in Boston. Dr. Nagaiah has expertise in treating lymphoma, lung cancer, and breast cancer, among other conditions.
PHILOSOPHY
I believe that being an oncologist is a privilege that is not to be taken lightly. I strive to provide evidence-based care that is appropriate to my patients’ particular problem, recognizing and respecting individual patient’s wishes. I take a multidisciplinary approach to care, including alternative therapies that have been shown to be effective.
RESEARCH PUBLICATIONS
Nagaiah G, Hossain A, Mooney CJ, Parmentier J, Remick SC. Anaplastic thyroid cancer: A review of epidemiology, pathogenesis, and treatment. J Oncol.2011;2011:542358. 2. Batalo M, Nagaiah G, Abraham J. Cognitive dysfunction in postmenopausal breast cancer patients on aromatase inhibitors. Expert Rev Anticancer Ther.2011;11(8):1277-1282. 3. Nagaiah G, Remick SC. Combretastatin A4 phosphate: A novel vascular disrupting agent. Future Oncol. 2010;6(8):1219-1228 4. Mooney CJ, Nagaiah G, Fu P, et al. A phase II trial of fosbretabulin in advanced anaplastic thyroid carcinoma and correlation of baseline serum-soluble intracellular adhesion molecule-1 with outcome. Thyroid. 2009;19(3):233-240. 5. Nagaiah G, Almubarak M, Khan M, Altaha R. Cerebrospinal fluid leak during treatment with bevacizumab and irinotecan after carmustine-impregnated wafers placement in patients with grade 2 oligodendroglioma and glioblastoma multiforme: Report of two cases and review of literature. Cancer Invest. 2010;28(10):1048-1053
Dr. Laeth George grew up in the Phoenix Metro area before completing his undergraduate studies at the University of Arizona in Tucson, Arizona, earning a Bachelor’s degree with Honors in Physiology. He obtained his M.D. from the University of Arizona College of Medicine – Phoenix, where he met his wife. Following this, he completed Internal Medicine residency at Case Western Reserve University Hospitals in Cleveland, Ohio. Thereafter, he completed his fellowship in Hematology and Oncology at the Cleveland Clinic Foundation – Taussig Cancer Center in Cleveland, Ohio.
During these years of training, he published multiple peer-reviewed articles in various medical journals regarding diseases like multiple myeloma as well as kidney cancer. He has presented research at national meetings, including at the 2023 Genitourinary Oncology meeting of the American Society of Clinical Oncology (ASCO).
He is excited to return to Phoenix and help serve the community he and his family consider to be home. He has a strong dedication to the care of patients with Hematologic and Oncologic conditions, and has experience treating a broad spectrum of both common and rare disorders in Hematology and Oncology. He believes in partnering with patients and their loved ones to provide compassionate, holistic, and evidence-based care to achieve the best outcomes possible.
Outside of work, he enjoys spending time with his wife and family, reading, trying new restaurants, and is an avid sports fan.
Dr. Jason Samuelian is a Board-certified Radiation Oncologist, with expertise in novel radiation techniques including Intensity Modulated Radiation Therapy (IMRT), Image Guided Radiation Therapy (IGRT), Stereotactic Radiosurgery (SRS), and Stereotactic Ablative Radiotherapy (SABR). He has a particular interest in using new and advanced treatment techniques to minimize side effects. He derives great satisfaction from spending time with his patients and developing relationships with them that last long beyond their cancer care.
Dr. Samuelian joined Arizona Center for Cancer Care in 2015. He earned his Bachelor of Science degree in Exercise Physiology from Brigham Young University, where he graduated cum laude. He earned his medical doctorate at Midwestern University in Glendale, where he was awarded the MICA Scholastic Award in 2008, and graduated with Honors in 2010. He completed an internal medicine internship at Banner Good Samaritan Medical Center, followed by residency training at the Baylor College of Medicine, where he also served as chief resident. In addition, Dr. Samuelian has completed two brachytherapy fellowships — at the MD Anderson Cancer Center and the Seattle Prostate Institute.
Dr. Samuelian is a member of the American Society of Therapeutic Radiation Oncology, American Brachytherapy Society, American College of Radiology, American College of Radiation Oncology, and the American Society of Clinical Oncology. He has been invited to serve on the ASCO Professional Development Committee. He currently serves as Chairman of the Cancer Committee at Banner Boswell Medical Center in Sun City, a program accredited by the Commission on Cancer (CoC).
Dr. Samuelian actively participates in cooperative group clinical trials. His research has been published in peer-reviewed medical journals, and he has presented at national meetings on SABR for COPD patients with early-stage lung cancer, IMRT for the treatment of rectal cancer, and prostate cancer brachytherapy, among others.
"Dr. Samuelian has always been very honest and truthful in presenting us with our options I trust his opinion 100 present and would highly recommend him to anyone seeking his treatment." -Rick
"I have been very impressed with Dr. Jason Samuelian. He seems extremely knowledgeable. I have had several doctors that had horrible bedside manner. Dr. Samuelian has an incredible bedside manner. It was so obvious that he was really concerned with my welfare. I would also like to do a shout out to his support team. They were incredible, and kind. I can't say enough about the entire experience. I'd give him six stars if I could." -Peter
Dr. Ertz-Archambault is triple board-certified in Hematology, Medical Oncology, and Internal Medicine, dedicated to providing expert and compassionate care to patients facing blood disorders and cancers, with a special emphasis in breast cancer. Dr. Ertz-Archambault has dedicated her career to serving the Phoenix cancer community. She spent over four years caring for the underserved cancer population at Valleywise Health, where she partnered with the breast cancer team honored with The Spirit of Healing Award from the Cancer Support Community of Arizona in 2022. Her commitment extends beyond the clinic through volunteer work, charity educational programs, and quality improvement initiatives for underserved cancer patients. Dr Ertz-Archambault is an active member of the American Society of Clinical Oncology and the American Society of Hematology. She also serves as an Assistant Clinical Professor at Creighton University, Phoenix School of Medicine, mentoring the next generation of physicians. Outside of medicine, she enjoys painting, gardening, and spending time with her family
Dr. Joan Dahmer specializes in hematology, medical oncology, and internal medicine.
Dr. Dahmer joined Arizona Center for Cancer Care in 2008 when her team at Arizona Center for Hematology and Oncology partnered with the practice. Prior to joining Arizona Center for Hematology and Oncology in 2002, Dr. Dahmer developed the oncology program at both Maryvale and Memorial Hospitals in Phoenix. She was also Chief of Medicine at Laurentian Hospital in California and has served as a medical consultant for prominent centers and labs.
Dr. Dahmer has been active in the medical community as a past or current member of several organizations, most recently as a member of The Arizona Clinical Oncology Society, the American Society of Hematology, and the Association of Community Cancer Centers, to name a few.
She has also volunteered her time to many health-related causes, including serving as medical director for the HAVEN Program of Northeastern Ohio, a comprehensive program for those infected with and affected by HIV.
She has presented on a number of topics including, medical marijuana, cardiac assessment in home care to home health nurses, women in medicine, oral & lung cancer and medicine as a career.
"Dr. Dahmer is very good, kind, understanding, and very professional 👏." -Cozetta
"Virginia Piper cancer center has the nicest. Most accommodating staff and nurses. Doc Dahmer is the best doctor I have heard of. She is patient. Kind. Incredibly smart. Very thorough. I just love her. You wont be disappointed with her." -Samantha
Dr. Cory Heal is a radiation oncologist who has expertise in a full breadth of radiation oncology treatments for both malignant and benign diseases in children and adults.
Before joining Arizona Center for Cancer Care, Dr. Heal received a Bachelor of Science from Brigham Young University and his Medical Doctorate from Drexel University. He then completed an internship in Internal Medicine at Abington Memorial Hospital and a residency in radiation oncology at the University of Arizona, where he served as Chief Resident.
Dr. Heal specializes in the treatment of malignancies of the breast, prostate, lung, skin, head and neck, gynecological tract, gastrointestinal tract, central nervous system, hematologic/lymphatic systems, and musculoskeletal systems. He also treats a wide array of benign diseases that benefit from radiation. Dr. Heal utilizes the latest treatment techniques in his practice, including Stereotactic Radiosurgery (SRS), Intensity Modulated Radiation Therapy (IMRT), Image-Guided Radiation Therapy (IGRT), PLUVICTO, LUTATHERA, and Stereotactic Ablative Radiotherapy (SABR/SBRT). Dr. Heal has additional specialized training and research interests in the use of HDR brachytherapy for several anatomic sites. His other research interests include patient safety and quality improvement.
An Arizona native who grew up in the East Valley, Dr. Heal feels privileged to serve the community he loves. He always seeks to be an advocate for his patients as he guides them through treatment. He enjoys the lasting relationships he develops with his patients and their families and feels honored to take part in their care.
Dr. Heal and his wife, Emily, have four children. Outside of medicine, Dr. Heal loves spending his free time being a dad, cooking new foods in the kitchen, and making memories with his family outdoors.
"Dr. Heal and his team were so thorough and thoughtful with explanations which reduced my anxiety and made daily radiation appointments very easy to manage!" -Wendy
"Couldn't be more satisfied with Dr. Heal. He's a wonderful person both personally and professionally, making sure to explain every aspect of the treatment for my brain cancer, as well as being an all-around good guy! I'm a lucky man." - Daniel
Dr. Dhillon is fellowship trained in Hematology and Medical Oncology. His clinical interests include a broad spectrum of disorders including solid tumors, hematologic malignancies, and benign hematologic disorders. His special interests include pancreatic cancer, breast cancer, myeloma, lymphoma, gastrointestinal malignancies, prostate cancer, and lung cancer. Dr. Dhillon also specializes in treatment of blood disorders.
Dr. Dhillon has participated in a number of research projects. He has presented his work at national meetings, and published in journals, including the New England Journal of Medicine.
He is an advocate of collaborative and patient-centered cancer care that delivers effective treatment while maintaining quality of life.
Dr. Dhillon enjoys golf, writing, activities related to personal fitness, hiking, traveling, and spending time with friends and family.
"I am a snowbird and had no idea who would be a good oncologist during the winter to treat me. When I read about him online, he was one of my top choices and I’m glad I picked him. He has been the perfect fit for me. Not only does he have a friendly personality, but he is very thorough and caring. He is also very efficient as well. If he says he will do something, you can depend on him to do it. I feel that I am in very good hands here. Thank you Dr. Dhillon! I will tell my Idaho friends about you." -Marilyn
"When I come to Dr Dhillon’s office I can honestly say that I have never felt so loved and cared for in any physician’s office. The staff there is excellent beginning with checking in. They are so polite and helpful. All of the nurses take a personal interest to aid me to get my most outstanding care. The encouragement I get from all of them is phenomenal! I may come in down and dejected but by the time I leave I feel like there is a bright light at the end of the tunnel!!" [click the link below to read the rest] -Linda
Dr. Sanjeev Gopal is a board-certified specialist in medical oncology and hematology with Arizona Center for Cancer Care and Virginia G. Piper Cancer Care Network.
With offices in Apache Junction, Mesa and Gilbert, Dr. Gopal is committed to providing the highest level of care with a priority of treating each patient and their families with utmost respect. It is important to Dr. Gopal to not only prolong lives of his patients, but to improve the quality of their lives.
"Dr Gopal is fabulous! He is really focused on you and what you are going through! Compassionate and knowledgeable!" -Pat
"Dr. Gopal and his staff are without a doubt the EXCEPTION TO TODAY'S IMPRESSION OF MEDICAL PROVIDERS! Dr. Gopal obviously took the time to hire his staff, because they are just as compassionate, caring, kind and loving as him. Trust me, I am qualified to make these statements; not my first rodeo, ya'll. I don't typically take the time for reviews, but for Dr. Gopal, I absolutely will make an exception as he deserves all the recognition for who he simply is, as a person (I think). Dr. Gopal took a personal interest in my care from the moment I was referred to him. "Bedside manner?" Dr. Gopal treated me like a "person" he cares for, like family. Therefore, that term is not relevant. If you ask me, that is a good thing!...' -Heidi
After graduating from a premier medical school in India, Dr. Fernandes continued her training in Internal Medicine and obtained advanced training in the treatment of blood and cancer disorders in the United States. She was awarded an international prestigious scholarship from the European Society of Medical Oncology and spent time as a visiting fellow in Medical Oncology in Spain.
Her areas of expertise include breast cancers in addition to treating other cancer disorders such as colon cancer, lung cancer, melanoma/skin cancers and blood disorders such as anemias, iron deficiency disorders, abnormal blood counts. She serves as a section editor for Breast Cancer on hemonc.org, an internationally accessed online resource for cancer physicians. She has presented cancer research at national and international cancer meetings in the United States and Europe and volunteers with the American Society of Clinical Oncology for peer review activities.
Dr. Fernandes believes in providing compassionate, exceptional and cutting-edge care to her patients. She strives to provide the most personalized treatment plan for her patients while taking into consideration their unique needs. Having had family members who have also been stricken with cancer, she understands and empathizes with the needs of caring for a loved one with cancer.
Dr. Fernandes enjoys spending time with family, travel, running, and watercolor painting.
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