Find a Top Internist Near Me in La Habra, CA – Book an Appointment Instantly

Dr. Neil Katchman is a board-certified physician specializing in Internal Medicine and Emergency Medicine. He earned his Doctor of Osteopathic Medicine degree from the University of Health Sciences in Des Moines, Iowa, after completing his Bachelor of Arts at Miami University of Ohio. Dr. Katchman has extensive experience in both hospital and clinical settings, including affiliations with Community and Kindred Hospitals across the Los Angeles area. With over four decades of medical practice, he is committed to providing comprehensive care, drawing on his background in internal medicine, emergency medicine, and clinical research.

Joseph E. Pierson, MD began his professional career with undergraduate studies at UC Irvine. He attended medical school at UCLA, then went on to complete his residency at Emory University Grady Memorial Hospital with an emphasis upon Pediatrics and Internal Medicine. He is currently a member of the clinical staff at Southern California Hospital. He is also affiliated with California Hospital Medical Center, Silverlake Hospital, Gardena Memorial Hospital, and many more throughout the Los Angeles area. 

Dr. Pierson is the Medical Director and CEO of Allied Health Solutions Medical Group. In this role, he strives to provide Comprehensive Inpatient and Outpatient Care services for adults and children as well as to provide Women’s health and preventive health care within several communities.

Dr. Pierson's main objective is to develop a broader system of health care, improve the health of the general population, improve healthcare outcomes, and increase efficiency within a Medical Home Model. He strives to develop a robust system through strategic partnerships among physicians, specialists, hospitals, and community health centers.

Outside of his passion for his practice, Dr. Pierson enjoys billiards, traveling, bicycling, chess, and competitive sports.

At Doctors Weight Loss in Laguna Hills, California, our expert team, led by James Joachim, MD, is dedicated to helping adults achieve their health and wellness goals. We specialize in a range of services designed to support your well-being from the inside out.

Our medical weight loss programs are tailored to your unique needs, offering proven solutions such as semaglutide and tirzepatide to help you lose weight safely and effectively. We also provide hormone replacement therapy, including men’s testosterone replacement therapy, to restore balance and vitality.

If you’re looking to turn back the clock, our anti-aging treatments, including sermorelin therapy, promote natural rejuvenation. In addition, we offer nicotinamide adenine dinucleotide (NAD) therapy to enhance mental clarity, boost energy levels, and support your overall cellular health.

Whether you want to shed excess weight, regain youthful energy, or optimize your health, visit our practice to receive excellent guidance every step of the way.

Take the first step toward a healthier, more vibrant you — contact Doctors Weight Loss today by phone or online to schedule your consultation.

Dr. Marc D. Makhani, the founder of LA Digestive Health and Wellness, located at the Cedars-Sinai Medical Towers in Beverly Hills, California, is one of the best Gastroenterologists in the Los Angeles area. Dr. Makhani's patients benefit from his expertise in delivering a variety of procedures including endoscopy, colonoscopy, video capsule endoscopy, radiofrequency ablation, and testing for acid reflux and motility disorders. Patients can seek diagnoses and treatment for conditions ranging from hemorrhoids to Barrett’s Esophagus and colon cancer.

Dr. Makhani pursued his bachelor’s degree at UCLA with a major in psychobiology. He also volunteered at the Santa Monica UCLA Hospital as an undergraduate. He then went on to obtain his medical degree as a doctor of medicine (MD) at the University of Vermont College of Medicine. He subsequently obtained a board certification in internal medicine after completing his residency at Cedars-Sinai Medical Center. Dr. Makhani then continued his medical training by pursuing a specialty in gastroenterology at Temple University Hospital in Pennsylvania before moving back to Los Angeles to begin his practice.

Dr. Makhani of LA Digestive Health and Wellness centers his principles on a passion for promoting overall health and wellbeing. Proper digestion and preventative care are essential to proper nutrition and he is a firm believer in practicing what one preaches. Dr. Makhani’s belief is that health is the result of a multifactorial process including an active lifestyle, digestive health, and proper dietary habits.

As one of the best gastroenterologists in the Los Angeles, CA area, Dr. Makhani has a wide range of clinical and research interests in gastroenterology that include acid reflux, peptic ulcer disease, colon cancer screening and prevention, motility disorders and irritable bowel syndrome (IBS).  We look forward to serving any and all of your digestive health needs. 

Experienced board-certified cardiologist Payam R. Yashar, MD has proudly served patients from all over Southern California for over fifteen years, and is now extending his counsel as far as Europe and Asia.

Dr. Yashar is based at Cedars-Sinai Medical Center in the Beverly Hills neighborhood of Los Angeles, California, the very hospital where he was born. He and his team offer specialized and highly responsive concierge-style care that you can receive in-office or in the comfort of your own home, as the practice offers house calls and telehealth services. As one of the most called-upon cardiologists at Cedars-Sinai, Dr. Yashar brings a wealth of experience to his patients when it comes to diagnosing, managing and treating a myriad of heart conditions. In addition to providing expert treatment, Dr. Yashar is especially adroit in addressing preventative care. 

Upon earning his medical degree from the prestigious Albert Einstein College of Medicine in New York in 1997, Dr. Yashar completed his internship and residency at Cedars-Sinai. He then trained in fellowship in Cardiovascular Diseases at the University of Southern California.  Thereafter, he pursued further specialized training in Cardiac Electrophysiology at the University of California, Los Angeles and the West Los Angeles Veterans' Medical Center.

Dr. Yashar is passionate about providing expert-level care to his patients. He offers diagnoses and treatment for conditions like chest pain, atrial fibrillation, heart failure and arrhythmia using the latest technology available. He also performs heart catheterization, pacemaker and defibrillator implantation, as well as ablations for cardiac arrhythmia.  All of his invasive procedures are performed at Cedars-Sinai, and diagnostic testing is undertaken either in office or with the utilization of remote testing whenever possible. 

Today, Dr. Yashar is affiliated with the Cedars-Sinai Smidt Heart Institute, and the Preventive and Consultative Heart Center.  He is a volunteer clinical instructor at the University of California, Los Angeles School of Medicine.  In addition, he has the distinct honor of being voted one of Los Angeles Magazine's Top 100 Cardiologists. Aside from his outstanding professional care, Dr. Yashar is a truly compassionate human being who genuinely regards the well-being of his patients as his utmost priority.  

Pedram J. Enayati, MD, is Co-Director of Gastroenterology Associates of Beverly Hills. He is an expert in the care of gastroenterology patients, and is up to date on the latest treatments and cutting edge technology. As he and his Co-Director, Dr. Omid Shaye, have quickly become the “go-to” doctors for all GI disorders in Beverly Hills, California, Dr. Enayati brings a wealth of experience and knowledge to GABH.

Dr. Enayati has done extensive research on GI disorders, liver diseases, as well as liver/kidney transplantation. He is the author of numerous journal articles and abstracts and has presented on a variety of topics both nationally and internationally. Dr. Enayati is also the recipient of numerous awards, including Solomon Research Honors; Rubenstein Research Honors; and Excellence in Research award was given by the Western Medical Research Committee. He is a member of the American Society of Gastroenterology and Endoscopy; American

Gastroenterology Association; American College of Physicians; American Society of Internal Medicine; California Medical Association; and American Medical Students Association. Dr. Enayati has certifications from The American Board of Internal Medicine and American Board of Gastroenterology.

Dr. Enayati earned his undergraduate at the University of California, Los Angeles where he was Phi Beta Kappa, majoring in neuroscience, and then went on to earn his medical degree at the university’s medical school. He completed his internship and residency in internal medicine at Cedars Sinai Medical Center. He also did a Gastroenterology Fellowship in the Department of Digestive Diseases at UCLA’s David Geffen School of Medicine. Dr. Enayati lives in Los Angeles and is married and has a young daughter. He enjoys biking and hiking.

Dr. Sasan Massachi is a board-certified internal medicine specialist located in Beverly Hills, CA. His office facilities are equipped with a range of services for men and women including annual physicals, vaccinations, ultrasounds, digital x-rays, bone density scans, and EKG stress tests. Additionally, he offers patients the convenience of an in-house laboratory, ensuring expedited test results for his patients. Preventative care is paramount to Dr. Massachi's practice, as he specializes in the most innovative techniques available through modern medicine today. Additionally, Dr. Massachi assists patients with identifying healthy practices and behaviors to incorporate into their daily lives that can stave off common illnesses. 

Dr. Massachi received his undergraduate degree at the University of California, Los Angeles, and attended medical school at the University of California, San Diego. Upon graduating, Dr. Massachi completed his internship and residency at Cedars-Sinai Medical Center in Los Angeles. He is credentialed with a California State Medical License and certified with the American Board of Internal Medicine. After graduating in 2010 from his residency program, Dr. Massachi joined the prestigious physicians group at Century City Primary Care, and recently opened a new state of the art office in Beverly Hills. 

Additionally, Dr. Massachi remains affiliated with Cedars-Sinai Medical Center, performing a variety of procedures and overseeing inpatient care. Dr. Massachi's unique personal approach extends absolute courtesy, empathy, discretion, and respect to each of his patients, ensuring you receive foremost care and treatment in a comfortable and stress-free environment. 

To schedule an appointment please call 310-553-3013 or visit www.sasanmassachi.com/ and click on the ‘Request Appointment’ button.

Dr. Adam Karns is a physician serving patients in the Los Angeles, CA area. Dr. Karns feels strongly that each and every patient deserves the highest standard of medical care. Through his solo medical practice, he strives to provide exactly that to each patient every day. Dr. Karns offers services including hypertension treatment, diabetes treatment, ear infection treatment, heart disease treatment, mental health treatment, common cold treatment, obesity management, and much more through physical exams.

Dr. Karns attended University of California Los Angeles, where he earned his Bachelors of Arts in History. he then went on to earn his Masters Degree in Physiological Studies and Doctorate of Medicine from Chicago Medical School. With more than 18 years of experience as a board certified Internal Medicine physician, Dr. Karns has the knowledge and experience to provide patients with the very best in care. Call anytime to arrange an appointment with Dr. Karns.

Dan Naim, MD, is a pulmonary, critical care, and sleep medicine specialist at The Beverly Hills Lung and Sleep Institute in Beverly Hills, California.

Dr. Naim graduated from Drexel University College of Medicine in Philadelphia in 2004.  He then completed his residency at the UCLA-VA combined Internal Medicine residency program. He subsequently completed a fellowship in Sleep Medicine at the same institution. He continued his medical training by completing a fellowship in Pulmonary and Critical Care Medicine at Cedars-Sinai Medical Center in Los Angeles. 

He is quadruple board-certified through the American Board of Internal Medicine in the fields of Internal Medicine, Sleep Medicine, Pulmonary Medicine, and Critical Care Medicine.  He is a member of the American Academy of Sleep Medicine and the American College of Chest Physicians. He expertly manages a wide range of conditions related to pulmonary disease and sleep disorders in addition to taking care of critically ill patients in the hospital.  His clinical areas of interest include obstructive lung disease, lung cancer diagnosis, chronic cough, interstitial lung disease, obstructive sleep apnea, and narcolepsy.  During his consultations, Dr. Naim fully explains patients’ conditions and helps them choose an appropriate treatment plan. 

To better serve his patients, Dr. Naim is trilingual in English, Spanish, and Farsi.

Dr. Mohammed Ansari is board certified in Internal medicine and completed his residency from University of Missouri, Kansas city. He has also completed training in functional medicine from the institute of Functional Medicine (IFM), and has been trained in chronic infections from ILADS and is a Lyme literate MD. He is also very well versed in mold illness, heavy metal toxicity, environmental illnesses, hormonal imbalances just to name a few. He also considers Dr. Neil Nathan, who is one of the leading experts in environmental illnesses and mold toxicity as his mentor as he has learned from him and is also part of his mentorship program where they have group discussions on difficult cases.

Dr. Ansari’s interest in Integrative and functional medicine came from various different avenues. When he was working as assistant professor of medicine at the University of Kansas, teaching medical students and residents, he used to see the same patients in the hospital not improving on standard of care treatments and wondered about other aspects that were neglected. He then enrolled in the “Institute of functional medicine” which aligned with his philosophy of “treating the root cause of disease and not just treating the symptoms” and “using food, nutrition, lifestyle and supplements in addition to traditional medicine” to enhance the patient’s immune system and eliminate illness. One of the other inspirations to learn about environmental illness and mold toxicity also came to him when his whole family including himself were affected by mold illness from living in a moldy home. 

He is naturally a very curious individual who is always eager to learn and in his free time goes through a lot of published research to get his answers as this is his passion. Although many times intuition is needed in treating patients, he believes there is a lot of research and evidence already out there which physicians and patients can benefit from and he regularly goes over interesting articles with his colleagues to see how to improve patient outcomes.

Dr. Ansari has extensive work experience, he has worked in acute patient care for Inpatient medicine and served as an Assistant professor in Internal Medicine at the University of Kansas Medical Center from 2016 to 2021 where he taught medical students and residents. He has also worked in an outpatient setting seeing patients for various illnesses including primary care from 2021 to 2024 before deciding to open his own practice.  

Dr. Ansari has a special interest and training in treating allergies, reducing the effects of toxic chemicals, exercise physiology, nutrition, weight management, mold illness, heavy metal toxicity and Environmental medicine.

Dr. Ansari spends time with his family in his off time and enjoys reading English mysteries, science-fiction novels, reading research papers, flying radio-controlled aircraft, weight lifting and training martial arts (Jiu-Jitsu/Wrestling/Kickboxing). 

Lina Acopians, DO, is a board-certified internist with a passion for preventative care. She believes in effective communication and teamwork with all her patients at Elevate Health Group in Glendale and Burbank, California. 

As a Los Angeles native, Dr. Acopians attended the University of California Irvine for her undergraduate degree, followed by the University of Southern California for her master’s in global medicine. Dr. Acopians completed her medical training at Touro College of Osteopathic Medicine in New York, where she graduated magna cum laude. She did a residency at Huntington Hospital in Pasadena where she served as Chief Resident. 

Since completing her training, Dr. Acopians is excited to be back home to serve her local community. She prioritizes trusting relationships with her patients and believes that patients know their bodies best. She listens to patients and helps them achieve and maintain health goals through empathy and evidence-based practices. 

In her spare time, Dr. Acopians enjoys gardening and baking.

Anna Arakelyan, MD, is a passionate and dedicated physician who goes above and beyond for her patients at Elevate Health Group. She is devoted to providing outstanding care for the people of Glendale and Burbank, California, and the surrounding areas.

Dr. Arakelyan grew up in a family of engineers and has always been the curious kind. She was born in Armenia and moved to the United States at the age of 15. Her passion for medicine became evident during her high school years after she started volunteering at local hospitals. She immediately felt that taking care of patients was a gift that she had.

Dr. Arakelyan received her undergraduate degree from the University of California Irvine (UC Irvine), after which she attended Ross University School of Medicine in Barbados, where she earned her medical degree. 

She completed her internal medicine residency training at Desert Regional Medical Center in Palm Springs, finishing her last year at White Memorial Medical Center.

Dr. Arakelyan is always loved by her patients due to the unique connection that she is able to develop with them. Her special interests include preventative medicine, obesity medicine, and addiction medicine. 

Dr. Arakelyan is a true patient advocate. Her oath is to help as many people as possible.