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.
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. Robin Obenchain specializes in Hematology and Medical Oncology. She believes in a holistic approach to cancer care integrating both the art and science of medicine uniquely based on an individualized care of each patient and family.
Dr. Obenchain joined Arizona Center for Cancer Care in 2016 and has been practicing in the Phoenix area for the past ten years. She has been published in Oncology Publishing Group: Colorectal Cancer in the Elderly Patient: Assessment and Treatment. She has received multiple awards including Association of Pathology Chairs Honor Society, the Higgins Award for outstanding Senior Resident and Alpha Omega Alpha Honor Society.
Dr. Obenchain has been named Top Doctor twice in the Phoenix Business Journal and is currently a member of the American College of Hospice and Palliative Medicine.
"These people are awesome. The doctor, her assistant, and the entire staff are wonderful people and they're a pleasure to deal with in what are sometimes not the most ideal conditions. They are extremely helpful, friendly courteous professional and I could go on and on. There is a single bad thing I can say about this practice or anyone who works here. Special shout outs to Dr Robin herself, Carrie, Ashley, Ashton, and Sandy who is no longer with them." -Jim
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.
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. Parmjeet Kumar Banghar specializes in hematology, medical oncology, and internal medicine. He joined Arizona Center for Cancer Care in 2008 when his team at Arizona Center for Hematology and Oncology partnered with the practice.
Currently, Dr. Banghar is a member of the American Society of Clinical Oncology and American Society of Hematology. He has participated in a research study involving cerebrovascular diseases and been published in several journals, including Leukemia Research and the Indian Journal of Medical Sciences. He has also presented on a number of topics, including sonographic evaluation of the spleen in sickle cell syndromes, lennox gastaut syndrome and sweet syndrome in a patient with acute myeloid leukemia.
"This doctor is smart and knows cancer. The staff is the best. My nurses who give me shots are the best! Highly reccomend this office." -Lina
"I have been Dr. Banghar's patient since 2019 and just found out I could give him a review. Wish I had been told this before. He is an excellent provider. He has made me feel confident about my treatment which I think has/had a tremendous amount of impact on my care and the outcome. I would recommend him and the facility in a heart beat." -Felicia
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. Divyashree Varma is a Clinical Cardiac Electrophysiologist based in Phoenix, Arizona, where she has been in practice since 2020. Born in India and raised in New Delhi, Dr. Varma completed her medical education at Padmashree Dr. D. Y. Patil Medical College in Navi Mumbai, Maharashtra, graduating as Valedictorian with honors in all subjects.
She moved to the United States for advanced training, completing her Internal Medicine residency at SUNY Upstate Medical University in Syracuse, New York, followed by a Cardiovascular Diseases Fellowship at UT San Antonio. She then pursued subspecialty training in Clinical Cardiac Electrophysiology at William Beaumont Hospital in Michigan.
Dr. Varma specializes in the full spectrum of cardiac electrophysiology, including complex catheter ablations, cardiac device implantation, left atrial appendage occlusion (LAAO), and the diagnosis and management of channelopathies and genetic arrhythmia disorders. Her professional interests focus on patient-centered clinical care and clinical research aimed at advancing treatments for cardiac arrhythmias. Outside of medicine, Dr. Varma enjoys spending time with her family and her dogs. She also enjoys cooking and gardening.
Dr. Robin Obenchain specializes in Hematology and Medical Oncology. She believes in a holistic approach to cancer care integrating both the art and science of medicine uniquely based on an individualized care of each patient and family.
Dr. Obenchain joined Arizona Center for Cancer Care in 2016 and has been practicing in the Phoenix area for the past ten years. She has been published in Oncology Publishing Group: Colorectal Cancer in the Elderly Patient: Assessment and Treatment. She has received multiple awards including Association of Pathology Chairs Honor Society, the Higgins Award for outstanding Senior Resident and Alpha Omega Alpha Honor Society.
Dr. Obenchain has been named Top Doctor twice in the Phoenix Business Journal and is currently a member of the American College of Hospice and Palliative Medicine.
"These people are awesome. The doctor, her assistant, and the entire staff are wonderful people and they're a pleasure to deal with in what are sometimes not the most ideal conditions. They are extremely helpful, friendly courteous professional and I could go on and on. There is a single bad thing I can say about this practice or anyone who works here. Special shout outs to Dr Robin herself, Carrie, Ashley, Ashton, and Sandy who is no longer with them." -Jim
Dr. Singavi’s clinical interests include solid tumors and hematologic disorders (both malignant and non-malignant – thrombotic/bleeding disorders/etc.). His special interests include Neuro-oncology, Breast Oncology, and Genitourinary.
When not working, Dr. Singavi enjoys spending time with his family, traveling, and watching sports.
"My father has been a patient of Dr Singavi for 3 years. Dr Singavi is an absolute gem! He is compassionate and very knowledgeable. He takes his time to listen to patient concerns and help the patient/family understand the treatment plan. I can’t say enough how grateful I am my father is in his care. It’s so rare to find a doctor that is both skilled in his field and has top notch bed side manor. Dr Singavi is both!!" -Laura
"Dr. Singavi is the most amazing Dr. He is kind, compassionate, and takes all the time in the world to make sure you understand your condition, and your treatment plan. His entire office staff is also very compassionate and carring. If you have to see an Oncologist, and let's face it, nobody wants to, Dr. Singavi and his staff are the people you want to be with during your care." -Sandy
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. 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. 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 Khosla is fellowship trained in interventional pain management, functional & regenerative medicine. He is also board certified in multiple specialities such as neurocritical care, headache medicine, orthopedic regenerative medicine and is also a certified brain injury specialist.
He provides an array of pain treatments such as platelet-rich plasma (PRP), stem cell regenerative therapies along with prolotherapy, epidurals, radio-frequency ablations, peripheral nerve blocks, joint injections, spinal cord stimulators, vertiflex interspinous spacer implants, percutaneous laser disc discectomy (LASE), and more.
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. 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. 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.
