Dr. Sharma Bishop, MD
Internist
Telehealth-Virtual Visit
Anaheim, CA 92806
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Availability last updated 03/03/2026
Dr. Sharma Bishop, MD
Internist
Telehealth-Virtual Visit
Anaheim, CA 92806
Kelly Okray, PA-C, MSPAS
Physician Assistant
44725 N. 10th Street West
Suite 280
Lancaster, CA 93534
Cydney Denning, PA-C is a board certified physician assistant who received a Bachelor’s degree in Biological Sciences at Missouri University of Science & Technology in Rolla, Missouri and a Master’s degree in Physician Assistant Studies at Saint Louis University in Saint Louis, Missouri. Cydney’s medical background includes working in both the orthopedic and dermatologic fields. Cydney’s clinical focus includes preventative care, lifestyle intervention, acute and chronic disease management, as well as diagnosing and treating various other conditions. She performs a variety of different in-office procedures including intra-articular joint injections, Pap smears and more. Cydney displays a great deal of empathy and compassion for her patient’s while providing quality, evidenced based care to those in her community. She is currently accepting new and established patients.
Cydney Denning, PA-C
Physician Assistant
44725 N 10th Street West
Suite 250
Lancaster, CA 93534
Kanagaratnam Sivalingam, MD, FACP, is a skilled internist at First Valley Medical Group in Lancaster, California. He has more than 40 years of experience in treating numerous acute and chronic conditions. Dr. Sivalingam spends time with patients and listens to their concerns, giving them a voice in their treatment.
Dr. Sivalingam earned his medical degree from the University of Ceylon Medical School in Peradeniya, Sri Lanka. He completed his internal medicine training at the Hospital for Joint Diseases in New York City and his residency at Vembadi Polyclinic in Ceylon, Sri Lanka.
He maintains his advanced credentials with continuing education. Dr. Sivalingam is board certified in internal medicine and licensed in the state of California. He’s a fellow of the American College of Physicians and a member of the American Medical Association, American Society of Echocardiography, American Academy of Anti-Aging Medicine, and numerous other professional organizations.
At First Valley Medical Group, Dr. Sivalingam provides premium care for patients with a variety of chronic diseases using a compassionate bedside manner. He uses the most innovative technology and procedures to provide expert treatments.
Dr. Sivalingam evaluates each patient as a whole person and offers conservative treatments whenever possible. He and his team warmly welcome patients to First Valley Medical Group and look forward to serving them.
Dr. Kanagaratnam Sivalingam, MD
Geriatrician
44725 N 10th Street West
Suite 250
Lancaster, CA 93534
Dr. Barry Buffman has been practicing since 1980 in internal medicine with a specialty in urology. He graduated from the Rush Medical College in Chicago, IL and practices with a focus on a multitude of urological issues, such as sexual dysfunction, bladder, and prostate conditions. In addition, Dr. Buffman is involved with medical research for various urological conditions. In his spare time Dr. Buffman has a passion for teleplay/screenplay, musical composition, guitar, and piano.
Dr. Barry Buffman, MD
Urologist
44725 N 10th Street West
Suite 250
Lancaster, CA 93534
Wasim H. Raja, MD, is proud to be the primary care provider of choice for many families in and around Anaheim, Huntington Beach, Santa Ana, Garden Grove, Irvine, and Newport Beach at his practice in Fountain Valley, California. He has earned a reputation for excellence through his attention to detail and unrushed, customized approach to health care.
Dr. Raja earned his medical degree at Allama Iqbal Medical College in Lahore, Pakistan, in 1998. He went on to complete a residency through the SUNY Health Science Center in Brooklyn, New York.
After more than two decades of treating patients in clinics, hospitals, emergency rooms, intensive care units, and nursing home, Dr. Raja has an expansive body of experience. He is also skilled in telemedicine services.
As a board-certified internal medicine specialist, Dr. Raja sought out and completed additional education and training to expand his skill set. He is also a proud member of the American College of Physicians.
A firm believer in the power of personalized care, Dr. Raja takes the time to get to know his patients and their needs. He builds patient education into every interaction, empowering those in his care to take charge of their own unique health journeys. He also speaks English, Urdu, and Punjabi, and enjoys caring for patients of all backgrounds.
Dr. Raja embraces a holistic approach to health care, recognizing and honoring the connections between body, mind, community, and spirit. While he delivers care solidly rooted in science, Dr. Raja also understands the value of traditional medicine and supports patients who want to integrate alternative care into their health planning.
For those in the Fountain Valley, California, as well as surrounding areas, who are searching for outstanding primary care and family medicine specialist, taking the time to come in and meet Dr. Raja and his team is a worthy endeavor. Booking takes just moments online or over the phone.
Wasim Raja, MD
Internist
11100 Warner Ave,
Suite 110
Fountain Valley, CA 92708
Sooraj Shah
Internist
9940 Talbert Ave
101
Fountain Valley , CA 92708
Mahmoud Eslami-Farsani, MD, FACC, FSCAI, is a board-certified cardiologist at Cardiology Specialists of Orange County in Santa Ana, Irvine, and Newport Beach, California. He has special interests in coronary intervention, including angioplasty, stent placement, valvuloplasty, valvular heart disease, and peripheral vascular intervention.
Dr. Eslami-Farsani earned his medical degree from Hahnemann University in Philadelphia, Pennsylvania. He then completed his internship and residency at the University of California, Irvine Medical Center in Orange, California, before completing his interventional and cardiology fellowships at the University of Southern California in Los Angeles.
He holds board-certifications in cardiovascular disease, interventional cardiology, and internal medicine. To remain up-to-date on the latest developments in his field, Dr. Eslami-Farsani is a member of the American College of Cardiology, the American Medical Association, and the American College of Physicians.
Dr. Eslami-Farsani is currently welcoming new patients and looks forward to partnering with them. Schedule an appointment with Dr. Eslami-Farsani by calling the office or booking online today.
Dr. Mahmoud Eslami Farsani, MD
Specialist
700 N. Tustin Avenue
Santa Ana, CA 92705
About The Practice
Cardiology Specialists of Orange County, with locations in Santa Ana, Irvine, and Newport Beach, California, provides high-quality cardiovascular services focusing on disease prevention and treatment. The outstanding physicians are board certified in cardiovascular diseases and use cutting-edge technology combined with consistently superior compassionate care to offer optimal patient outcomes.
At Cardiology Specialists of Orange County, patients benefit from triple-accredited laboratory facilities and comprehensive in-house services to make everything as easy as possible. These awards recognize Cardiology Specialists of Orange County's superior commitment to patient care and its provision of quality diagnostic testing.
The advanced diagnostics available include echocardiograms, stress testing, Holter monitoring, event monitoring, and vascular screening. The Santa Ana location also has a nuclear testing and imaging system and offers external counterpulsation (ECP) therapy for patients with chronic stable angina.
Cardiology Specialists of Orange County treat conditions including coronary artery disease, high blood pressure, congestive heart failure, and atrial fibrillation. They can also diagnose and treat symptoms like chest pain, arrhythmia, shortness of breath, and heart murmurs.
Patients can receive expert care for circulatory problems like chronic venous insufficiency and varicose veins. Treatments for these conditions include patient information and education on making healthy lifestyle choices and a wide range of medications. The cardiologists also perform minimally invasive cardiac catheterization procedures such as balloon angioplasty, as well as pacemaker and defibrillator implantation.
For over 30 years, Cardiology Specialists of Orange County has provided invaluable services to the local community, and their cardiologists also have roles at partnering hospitals. The practice has an established patient base with a solid reputation for patient-centered care and receives numerous referrals via word of mouth.
For timely and successful treatment of your cardiovascular problems, call Cardiology Specialists of Orange County or book an appointment online today.
Ravi Masson, MD
Cardiologist
700 N. Tustin Avenue
Santa Ana, CA 92705
Board-certified cardiologist Ethan Yalvac, MD, FACC, FSCAI, RPVI, CBNC, is proud to provide comprehensive care to patients at Cardiology Specialists of Orange County in Santa Ana, Irvine, and Newport Beach, California.
Dr. Yalvac received his Bachelor of Arts in economics and math, graduating cum laude. He earned his Doctor of Medicine from the University of Texas Medical Branch School of Medicine in Galveston. He then completed his internship and residency in internal medicine at Tulane University in New Orleans, Louisiana. Afterward, Dr. Yalvac completed a general cardiology fellowship at the Tulane University Heart and Vascular Institute before completing an interventional cardiology fellowship at the University of California, San Diego.
He holds certification from the Board of Nuclear Cardiology in advanced cardiac life support and is Level II trained in echocardiography. Dr. Yalvac is a member of the Society for Vascular Ultrasound, and a fellow of the American College of Cardiology and the Society for Cardiovascular Angiography and Interventions.
Dr. Yalvac is affiliated with Hoag Hospital and Hoag Vascular Institute in Newport Beach, Hoag Hospital & Orthopedic Institute in Irvine, St. Joseph Hospital in Orange, and Orange County Medical Center in Santa Ana, California.
Dr. Ethan Yalvac, MD
Internist
700 N. Tustin Avenue
Santa Ana, CA 92705
Ali Ashtiani, MD is a fellowship-trained, board-eligible interventional cardiologist at Cardiology Specialists of Orange County (CSOC) practicing in Santa Ana, Irvine, and Newport Beach, California. He has special interests in coronary intervention including coronary angioplasty & stent placement, pacemaker implantation, and valvular/structural heart disease.
Dr. Ashtiani received his medical training in our very own Orange County. After earning his medical degree from the University of California, Irvine Medical Center in Orange, California, he went on to complete internal medicine internship and residency followed by cardiology fellowship and advanced fellowship training in interventional cardiology at the same institution.
Dr. Ashtiani is affiliated with Hoag Hospital Heart and Vascular Institute in Newport Beach, Hoag Hospital Irvine, & Hoag Orthopedic Institute, St. Joseph Hospital in Orange, and Orange County Global Medical Center in Santa Ana.
Dr. Ashtiani is currently welcoming new patients and looks forward to providing individualized care with patience and compassion just as he would treat his own family. Schedule an appointment with Dr. Ashtiani by contacting our office today.
Dr. Ali Ashtiani, MD
Internist
700 N. Tustin Avenue
Santa Ana, CA 92705
Dr. Deepak Thiagarajan, MD
Internist
7974 Haven Avenue,
Suite 210
Rancho Cucamonga, CA 91730
Sooraj Shah
Internist
1640 Newport Blvd Suite 445
Costa Mesa, CA 92627
Ali Ashtiani, MD is a fellowship-trained, board-eligible interventional cardiologist at Cardiology Specialists of Orange County (CSOC) practicing in Santa Ana, Irvine, and Newport Beach, California. He has special interests in coronary intervention including coronary angioplasty & stent placement, pacemaker implantation, and valvular/structural heart disease.
Dr. Ashtiani received his medical training in our very own Orange County. After earning his medical degree from the University of California, Irvine Medical Center in Orange, California, he went on to complete internal medicine internship and residency followed by cardiology fellowship and advanced fellowship training in interventional cardiology at the same institution.
Dr. Ashtiani is affiliated with Hoag Hospital Heart and Vascular Institute in Newport Beach, Hoag Hospital Irvine, & Hoag Orthopedic Institute, St. Joseph Hospital in Orange, and Orange County Global Medical Center in Santa Ana.
Dr. Ashtiani is currently welcoming new patients and looks forward to providing individualized care with patience and compassion just as he would treat his own family. Schedule an appointment with Dr. Ashtiani by contacting our office today.
Dr. Ali Ashtiani, MD
Internist
4440 Von Karman Ave.
Suite 260
Newport Beach, CA 92660
About The Practice
Cardiology Specialists of Orange County, with locations in Santa Ana, Irvine, and Newport Beach, California, provides high-quality cardiovascular services focusing on disease prevention and treatment. The outstanding physicians are board certified in cardiovascular diseases and use cutting-edge technology combined with consistently superior compassionate care to offer optimal patient outcomes.
At Cardiology Specialists of Orange County, patients benefit from triple-accredited laboratory facilities and comprehensive in-house services to make everything as easy as possible. These awards recognize Cardiology Specialists of Orange County's superior commitment to patient care and its provision of quality diagnostic testing.
The advanced diagnostics available include echocardiograms, stress testing, Holter monitoring, event monitoring, and vascular screening. The Santa Ana location also has a nuclear testing and imaging system and offers external counterpulsation (ECP) therapy for patients with chronic stable angina.
Cardiology Specialists of Orange County treat conditions including coronary artery disease, high blood pressure, congestive heart failure, and atrial fibrillation. They can also diagnose and treat symptoms like chest pain, arrhythmia, shortness of breath, and heart murmurs.
Patients can receive expert care for circulatory problems like chronic venous insufficiency and varicose veins. Treatments for these conditions include patient information and education on making healthy lifestyle choices and a wide range of medications. The cardiologists also perform minimally invasive cardiac catheterization procedures such as balloon angioplasty, as well as pacemaker and defibrillator implantation.
For over 30 years, Cardiology Specialists of Orange County has provided invaluable services to the local community, and their cardiologists also have roles at partnering hospitals. The practice has an established patient base with a solid reputation for patient-centered care and receives numerous referrals via word of mouth.
For timely and successful treatment of your cardiovascular problems, call Cardiology Specialists of Orange County or book an appointment online today.
Ravi Masson, MD
Cardiologist
4440 Von Karman Ave.
Suite 260
Newport Beach, CA 92660
Board-certified cardiologist Ethan Yalvac, MD, FACC, FSCAI, RPVI, CBNC, is proud to provide comprehensive care to patients at Cardiology Specialists of Orange County in Santa Ana, Irvine, and Newport Beach, California.
Dr. Yalvac received his Bachelor of Arts in economics and math, graduating cum laude. He earned his Doctor of Medicine from the University of Texas Medical Branch School of Medicine in Galveston. He then completed his internship and residency in internal medicine at Tulane University in New Orleans, Louisiana. Afterward, Dr. Yalvac completed a general cardiology fellowship at the Tulane University Heart and Vascular Institute before completing an interventional cardiology fellowship at the University of California, San Diego.
He holds certification from the Board of Nuclear Cardiology in advanced cardiac life support and is Level II trained in echocardiography. Dr. Yalvac is a member of the Society for Vascular Ultrasound, and a fellow of the American College of Cardiology and the Society for Cardiovascular Angiography and Interventions.
Dr. Yalvac is affiliated with Hoag Hospital and Hoag Vascular Institute in Newport Beach, Hoag Hospital & Orthopedic Institute in Irvine, St. Joseph Hospital in Orange, and Orange County Medical Center in Santa Ana, California.
Dr. Ethan Yalvac, MD
Internist
4440 Von Karman Ave.
Suite 260
Newport Beach, CA 92660
Mahmoud Eslami-Farsani, MD, FACC, FSCAI, is a board-certified cardiologist at Cardiology Specialists of Orange County in Santa Ana, Irvine, and Newport Beach, California. He has special interests in coronary intervention, including angioplasty, stent placement, valvuloplasty, valvular heart disease, and peripheral vascular intervention.
Dr. Eslami-Farsani earned his medical degree from Hahnemann University in Philadelphia, Pennsylvania. He then completed his internship and residency at the University of California, Irvine Medical Center in Orange, California, before completing his interventional and cardiology fellowships at the University of Southern California in Los Angeles.
He holds board-certifications in cardiovascular disease, interventional cardiology, and internal medicine. To remain up-to-date on the latest developments in his field, Dr. Eslami-Farsani is a member of the American College of Cardiology, the American Medical Association, and the American College of Physicians.
Dr. Eslami-Farsani is currently welcoming new patients and looks forward to partnering with them. Schedule an appointment with Dr. Eslami-Farsani by calling the office or booking online today.
Dr. Mahmoud Eslami Farsani, MD
Specialist
4440 Von Karman Ave.
Suite 260
Newport Beach, CA 92660