Find a Top Internist Near Me in Thousand Oaks, CA – Book an Appointment Instantly

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.

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. Shelly Bagai Lapsi, MD, is a board-certified ophthalmologist and Medical Director for Omni Eye Care, with convenient locations in Covina and El Monte, California. With her extensive training, Dr. Lapsi is committed to providing the highest quality of ophthalmic care to her patients, utilizing the most recent medical and surgical advances. Her philosophy is to be actively engaged and dedicated to delivering this mission to her patients.

She attended the University of Washington School of Medicine, nationally recognized for its excellent training programs. Subsequently, she completed her residency at the University of Washington Department of Ophthalmology, a rigorous, top-tier program emphasizing a strong foundation in medical and surgical ophthalmology. At the University of Washington, she trained with many of the world’s most renowned ophthalmologists considered to be pioneers in the field.

Dr. Lapsi’s areas of interest include cataract surgery and glaucoma. Additionally, diabetic screening and macular degeneration care are central to her patient-centric approach. First and foremost, the goal of Omni Eye Care is to assist patients in maintaining excellent vision and eye health.  

When she is not practicing ophthalmology, Dr. Lapsi spends time with her husband and three children. She also enjoys reading, cooking, and photography, as well as traveling with her family. If you’re interested in ophthalmology services in the San Gabriel Valley, Dr. Lapsi is an exceptional eye physician and surgeon. She looks forward to meeting you and helping you achieve optimal eye health.

Dr. Salehy completed his medical school at the University of Tennessee Health Science Center in Memphis, TN in 2015. He completed his internship in Internal Medicine at the UTHSC as well in 2016 and then completed his residency at MountainView Hospital Sunrise Health GME in Las Vegas, NV in 2018. Dr. Salehy speaks English and Persian.

Dr. Perez Andreu completed her medical school at the University Miguel Hernandez of Elche in Spain in 2003. She completed her residency in Hematology at Morales Meseguer Hospital in Murcia, Spain in 2008. While working as a hematologist, she graduated cum laude in 2011 with her Ph.D. in Pharmacogenetics from the University of Murcia, Spain, and the Wellcome Sanger Institute in Cambridge, UK. She then completed her postdoctoral fellowship at the Pharmaceutical Sciences department of St. Jude Children's Research Hospital in Memphis, TN in 2015. Afterward, she decided to practice medicine in the US and completed her residency in Internal Medicine at MountainView Hospital Sunrise Health GME in Las Vegas, NV in 2019. Dr. Perez Andreu speaks English and Spanish.

Dr. Salehy completed his medical school at the University of Tennessee Health Science Center in Memphis, TN in 2015. He completed his internship in Internal Medicine at the UTHSC as well in 2016 and then completed his residency at MountainView Hospital Sunrise Health GME in Las Vegas, NV in 2018. Dr. Salehy speaks English and Persian.

Dr. Perez Andreu completed her medical school at the University Miguel Hernandez of Elche in Spain in 2003. She completed her residency in Hematology at Morales Meseguer Hospital in Murcia, Spain in 2008. While working as a hematologist, she graduated cum laude in 2011 with her Ph.D. in Pharmacogenetics from the University of Murcia, Spain, and the Wellcome Sanger Institute in Cambridge, UK. She then completed her postdoctoral fellowship at the Pharmaceutical Sciences department of St. Jude Children's Research Hospital in Memphis, TN in 2015. Afterward, she decided to practice medicine in the US and completed her residency in Internal Medicine at MountainView Hospital Sunrise Health GME in Las Vegas, NV in 2019. Dr. Perez Andreu speaks English and Spanish.

Since opening the doors in 2003, Dr. Bhuiya has established a thriving multi-specialty medical office in the heart of the Conejo Valley. Dr. Bhuiya has over two decades of experience and an extremely refined technique. His high level of skill and artistic reputation has lead to the opening of an office in San Fernando. Dr. Bhuiya graduated University of Nevada School of Medicine and then went to USC for his internship. Afterward, he finished his residency in New York at Columbia University. Dr. Bhuiya specializes in cosmetic procedures, bio-identical hormone replacement therapy, internal medicine and addiction medicine (drug and alcohol detox). His mission is to help his patients achieve their medical goals through a multi-specialty approach. We look forward to meeting you!

Christopher James Brana was born and raised in the Inland Empire of Southern California. During high school and college years he worked in his family’s Biomedical Engineering Company specializing in servicing renal replacement technology/equipment.

Tessa Shuler, FNP-C, is a Family Nurse Practitioner and former Registered Nurse; she worked in the Intensive Care Unit for 7 years. She received her BSN from the University of Hawaii, Manoa and her MSN, Family Nurse Practitioner from California State University, Channel Islands.  Her experience as an RN in the high intensity environment of critical care gave her the ability to assess and prioritize patient needs, as well as to care for the whole patient and their families.  Caring for critically ill patients gave her the understanding of the importance of overall health maintenance and preventative care. She strives to deeply educate patients and families about their health, diagnoses, and medications in order to optimize their health.  She values patients’ ideas and knowledge of their own health, and works to empower them to live as healthfully as possible. 

When not working, she strives to be outside as often as possible: hiking, biking, and chasing after her two young sons among all the nature we have available in our county.  

Tessa Shuler, FNP-C, is a Family Nurse Practitioner and former Registered Nurse; she worked in the Intensive Care Unit for 7 years. She received her BSN from the University of Hawaii, Manoa and her MSN, Family Nurse Practitioner from California State University, Channel Islands.  Her experience as an RN in the high intensity environment of critical care gave her the ability to assess and prioritize patient needs, as well as to care for the whole patient and their families.  Caring for critically ill patients gave her the understanding of the importance of overall health maintenance and preventative care. She strives to deeply educate patients and families about their health, diagnoses, and medications in order to optimize their health.  She values patients’ ideas and knowledge of their own health, and works to empower them to live as healthfully as possible. 

When not working, she strives to be outside as often as possible: hiking, biking, and chasing after her two young sons among all the nature we have available in our county.  

Christopher James Brana was born and raised in the Inland Empire of Southern California. During high school and college years he worked in his family’s Biomedical Engineering Company specializing in servicing renal replacement technology/equipment.