Who We Are

David Herbert, M.D.
President/CEO
(916) 887-4903
herbertd@sutterhealth.org

Jose A. Arevalo, M.D.
Chief Medical Officer
(916) 887-4904
arevalj@sutterhealth.org

Thomas Hopkins, M.D.
Chairman of the Board
Specialty: Internal Medicine
Phone: (916) 446-4449

Adarsh Bhat, M.D.
Secretary
​Specialty: Nephrology
Phone: (916) 789-1505

Richard Areen, M.D.
Treasurer
​Specialty: Otolaryngology
Phone: (916) 736-3399

Muhammed Afzal, M.D.
Specialty: Pulmonary and Critical Care
Phone: (916) 325-1040

Lakshmi Avala, M.D.
Specialty: Pediatrics
Phone: (916) 722-4791

Marc Concepcion, D.O.
​Specialty: Family Medicine
​Phone: (916) 371-4939

Jason Park, M.D.
Specialty: General Surgery
Phone: (916) 570-2840

Margaret Parsons, M.D.
Specialty: Dermatology
Phone: (916) 739-1505

Patricia Sierra, M.D.
Specialty: Ophthalmology
Phone: (916) 649-1515

Alvin Sockolov, M.D.
Specialty: Family Medicine
​Phone: (916) 927-1114

Jonathan Thygeson, M.D.
Specialty: Pediatrics
​Phone: (916) 924-8754

Mark Vaughan, M.D.
Specialty: Family Medicine
​Phone: (530) 886-8630

Sanjay Yadlapalli, M.D., FACC
​Specialty: Cardiovascular Disease
Phone: (916) 782-2146

Mohammad Yusufzai, M.D.
Specialty: Internal Medicine
​Phone: (916) 331-1333