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Get in touch with our Managers to inquire about our homes, schedule a tour, or just say hello.

Jessica McPherson

General Manager

Jennifer Ellsworth

Director of Marketing
480-868-7251 (jennifere@mdseniorliving.com)

About

Leadership at MD Senior Living

Leadership team

Dr. S. Krishnan

MD
Board Certified in Cardiology,
Interventional Cardiology
Principal
MD Senior Living
Dr. Krishnan, a board-certified cardiologist with a subspecialty in interventional cardiology, has made it his mission to provide high-quality care for older adults. He co-founded MD Senior Living and Valencia Care Homes in Scottsdale with a philosophy that emphasizes the physical, mental, and spiritual well-being of seniors. Dr. Krishnan’s passion for senior care led him to found the MD Senior Living Academy, where he educates and trains physicians on how to own and operate their own RAL homes in their communities, providing seniors with the best possible care and quality of life.
Jeff Geidt

Jeff Geidt

Co-founder, MDSL
Principal / Managing Partner,
MD Senior Living
Jeff is co-founder of multiple senior care organizations including MD Senior Living, Home Matters, and Stepping Up for Seniors, a non-profit charity serving low-income seniors in need. His organizations have consistently achieved award-winning care. Jeff received his undergraduate education at UCLA and earned his MBA from the University of Phoenix. He currently lives in Phoenix with his wife and three kids.
Dr. Mel Ranat

Dr. Mel R

M.D.
Board Certified in Family Medicine & Geriatrics
Principal
MD Senior Living
Dr. Mel is a compassionate and experienced physician who specializes in Senior and Geriatric care within the realm of Family Medicine. She brings her expertise and evidence-based approach to her role as a hospitalist and a busy aesthetics medical practice. Dr. Mel is a firm believer in elevating the quality of care and safety culture at our senior assisted living homes, and strives to make a positive impact on the lives of our residents. Her motto “Elevate Yourself. Elevate Others.” is a testament to her commitment to improving the senior living experience.
andres reyes

Drs. Reyes & Collazo

Board Certified Nephrology
Board Certified Pulmonary Critical Care
Principal
MD Senior Living
Dr. Reyes & Collazo met in Tampa during their medical training at the Univ. of South Florida and share a belief that the key for a healthier fuller life is with prevention. Dr. Reyes specializes as Nephrologist caring for patients with kidney disorders. Dr. Collazo cares for patients with Pulmonary and Sleep Disorders as well as managing critically ill patients. Both believe in quality over quantity medical care and their combined vision and passion will allow our residents to live a more fulfilled life.
Velez_Arnaldo_008

Dr. Arnaldo Velez

M.D.
Vascular Neurologist
Prinicipal
MD Senior Living
Dr. Velez cares for patients with urgent medical needs such as stroke, and abnormal conditions affecting the blood supply to the brain and spine. He earned his medical degree in Puerto Rico and completed a neurology residency in NJ, followed by a vascular neurology fellowship at University of Florida-Shands Hospital in Gainesville. Dr. Vélez encourages his patients and family to learn the signs of an acute stroke and seek medical treatment immediately if they believe they are having one. He passionately believes in one of Dr. Atul Gawande’s quotes, that says: “We’ve been wrong about what our job is in medicine. We think our job is to ensure health and survival. But really it is larger than that. It is to enable well-being. And well-being is about the reasons one wishes to be alive.”
Dr. Liz Treynor

Dr. Liz Treynor

M.D.
Anatomic & Clinical Pathologist
Principal
MD Senior Living
Dr. Treynor is a double Board Certified Anatomic & Pathologist in practice at the Washington Hospital in the San Francisco Bay Area. Practicing for over 20 years, she graduated with highest honors from USC-Keck School of Medicine in 1996. She subsequently completed her Pathology residencies, as well as two fellowships in surgical pathology, at Stanford in 2002, where she served as chief resident in 1998. Dr. Treynor is also a fellow of the College of American Pathologist. With an adventurous spirit, Dr. Treynor keeps active by traveling, surfing, podcasting, and tandem biking with her radiologist husband, among her many interests beyond the microscope.
Harish

Dr. Harish

M.D.
Board Certified, General Surgery
Principal
MD Senior Living

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