Siena Hills Primary Care - Henderson, NV. Siena Hills Primary Care. 2789 Sunridge Hts Pkwy Suite 100, Henderson, NV (702) 614-0850. COVID-19 Recommendations. Dear Patient, We are getting daily updates regarding the status of the coronavirus. Please know that we, at Siena Hills Primary Care, are taking all possible precautions and safety ...Our Physicians‧New Patients‧Location & Hours‧Notice of Privacy Practices.