6425 Lynch Canyon Road
    Mt. Mesa, CA 93240

Voice: (760) 379-8630   
Fax: (760) 379-7658   



 Our Mission 

 

Dr. Robert Gross, DO
Dr. Holly Spohn-Gross, DPM
James Gutzman, PA-C, FNP, RN

At Sienna Wellness Institute, we recognize the value of every person, the importance of their health and personal well being. 

Therefore, we are dedicated to providing exemplary medical and physical care while promoting wellness for each of our patients with competence, compassion and excellence.

Our vision for Sienna Wellness Institute is to set the pace for sophisticated and compassionate care in our community.

Please call (760) 379-8630 for an appointment.   Walk-ins welcome! 


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   6425 Lynch Canyon Road,    
Mt. Mesa, CA 93240

Voice: (760) 379-8630   
 Fax: (760) 379-7658

 

Dr. Robert Gross, DO
Dr. Holly Spohn-Gross, DPM
James Gutzman, PA-C, FNP, RN