Medical team
The GIOSTAR medical team
Free, no obligation
Our team in Henderson
Names, titles and credentials as approved for this website.
Dr. Anand Srivastava
Founder & Chief Scientific Officer, Global
Founded GIOSTAR, whose stem cell protocols are built on research at Salk, UC San Diego, UC Irvine and UCLA.
Dr. Ryan Peterson
Medical Director, Nevada
Provides clinical oversight for every stem cell plan, drawing on his surgical training in New York and Denver.
Tom Bloss
Managing Partner, GIOSTAR Las Vegas
Owns and runs GIOSTAR Las Vegas with Devin, and you can meet him in our Henderson office.
Devin Ritholz
Managing Partner, GIOSTAR Las Vegas
Owns and runs GIOSTAR Las Vegas with Tom after bringing GIOSTAR to his hometown to offer individualized care.
Luzelle Cabuntala, FNP-BC
Nurse Practitioner
A board-certified family nurse practitioner who gives stem cell therapy and sets your plan with you.
Christina Martinez, FNP-C
Nurse Practitioner
A certified family nurse practitioner who gives stem cell therapy and reviews your history in person before any plan.
Sarah Hoffman, RN, BSN
Registered Nurse
Works beside our nurse practitioners on your care as a registered nurse with a bachelor's degree in nursing.
Maggie Ritholz
Office Manager
Runs the office at our Henderson wellness center and is an integral member of the operations team.
Desi Wojtowicz
Patient Experience Coordinator
Looks after your visits from your free consultation on, so you know what to expect at each step.
McKenzie Washington
Lab Technician
Handles your blood draws and lab work at our Henderson wellness center as part of the care team.
Questions about the team
Who you will meet, and who oversees your care
Ask our patient team anything else at 702.703.5393.
Christina Martinez, FNP-C, and Luzelle Cabuntala, FNP-BC, are the nurse practitioners who give every stem cell therapy plan, with Sarah Hoffman, RN, BSN, on the care team.
Dr. Ryan Peterson, our Medical Director for Nevada, provides clinical oversight for every stem cell plan, drawing on his surgical training in New York and Denver.
Dr. Anand Srivastava founded GIOSTAR, and its stem cell protocols are built on research at Salk, UC San Diego, UC Irvine and UCLA. Read about his published research.
Meet the team before you book
Start with a free consultation by phone or online, then meet your nurse practitioner in person at our Henderson wellness center.
Free, no obligation