Venkata Emani, MD
Dr. Emani is an Interventional Cardiology specialist in Stockton, California. He attended and graduated from medical school in 1992, having over 28 years of diverse experience, especially in Interventional Cardiology. He is affiliated with many hospitals in the area also cooperates with other doctors and physicians in medical groups including Central Valley Cardiovascular Associates Inc. Dr. Venkata Emani accepts Medicare-approved amount as payment in full.
David Lim, MD
Dr. Lim received his undergraduate degree from University of California, Berkley and his medical degree from Albert Einstein College of Medicine, New York. He completed his cardiology fellowship at the University of California, San Francisco. Dr. Lim is a native Stocktonian and returned to Stockton to join Stockton Cardiology Medical Group in 1993. Dr. Lim is currently a member of San Joaquin Community Board.
Ali Reza Mirhosseini, MD
Dr. Ali Reza Mirhosseini is a cardiovascular disease specialist in Tracy, California. He graduated with honors in 2005. Having more than 15 years of diverse experience, Dr. Mirhosseini is affiliated with many hospitals including Doctors Hospital Of Manteca, Sutter Tracy Community Hospital, and is a member of the Stockton Cardiology Medical Group
Rajiv Punjya, MD
Dr. Punjya joined Stockton Cardiology Medical Group in 1996. His office location is Tracy and Manteca. Dr. Punjya received his M.D. degree from Baroda Medical College, Maharaja Sayajirao University, Baroda, India. He completed his internship and residency at Wayne State University of Medicine, Detroit, Michigan. His interventional and cardiology fellowship was completed at Harper Hospital, Wayne State University School of Medicine, in Detroit, Michigan.
Surrender Raina, MD
Dr. Raina joined Stockton Cardiology Medical Group in 1977. Dr. Raina received his undergraduate degree from Government Medical College (M.B.B.S.) Kashmir, India. His postgraduate education and training included internship and residency in Internal Medicine, Mount Sinai Medical Center, New York, Elmhurst Hospital. This was followed by his fellowship in cardiology at the University of Pennsylvania for 2 years. Dr. Raina has been in cardiology (invasive and non-invasive) practice for over 30 years. He has extensive experience in complex cardiovascular intervention (heart), complex peripheral (leg) interventions, and carotid (neck artery) stent procedures. Dr. Raina was first to start the angioplasty program at St. Joseph’s Medical Center in 1984.
Sanjeev Vaishampayan, MD
Dr. Vaishampayan joined Stockton Cardiology Medical Group in 2010. He received his undergraduate degree and medical education, respectively, from Kalamazoo College and Wayne State University School of Medicine. Dr. Vaishampayan has been practicing clinical cardiology for over 15 years. His practice involves echocardiography, trans-esophageal echocardiography, nuclear cardiology, cardiac catheterization, and pacemaker implantation. He relocated to California in July 2010 from his previous practice in Michigan, joining Stockton Cardiology Medical Group.
Richard Waters, MD
Dr. Waters is a native of Stockton. He joined Stockton Cardiology Medical Group in 2005. He is a graduate of Stanford University and Vanderbilt University School of Medicine. He subsequently completed his internship and residency in internal medicine at Johns Hopkins Hospital. Dr. Waters then completed his fellowship in interventional cardiology at Duke University Medical Center.


During the pandemic and at all times, the NSC Stockton doctors and staff are dedicated to ensuring that your care is provided in a safe environment, following the utmost strict guidelines for cleaning, sterilization, protective equipment and testing. During the pandemic, we have increased the frequency and intensity of our cleaning.

We follow all State and Federal rules and regulations. All patients must be tested for Covid-19 prior to arrival at the center, (this will be arranged in advance) and will be asked about signs/symptoms of illness on the day of your scheduled procedure. Your temperature will also be taken. We will provide for social distancing and limit the number of people entering the center. Masks are required at all times for patients, staff and your companion. If the recommendations by the health department change, we will update our policy.