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Kornelia Teslic, MD  is a Board Certified Diagnostic NeuroRadiologist at Citimed Comprehensive TBI Center. She completed her fellowships at Weill Cornell, NY, and Memorial Sloan- Kettering Cancer Center, NY. She has 20 years of experience in neuroimaging including advanced MRI techniques. She speaks English, Spanish, Croatian, and Serbian.

As a highly-trained diagnostic radiologist, Dr. Teslic specializes in neuroradiology. She provides a complete range of diagnostic imaging services, including advanced diffusion-weighted MRIs for cancer detection and diffusion tensor MRIs for brain imaging.   

 

 

At our medical practice, we prioritize healthspan by going beyond traditional treatment of chronic conditions. We are committed to proactive care, emphasizing prevention and early detection to promote a long and healthy life, rather than merely extending lifespan. By identifying potential issues before they manifest into serious problems, we strive to empower our patients to maintain optimal health and wellbeing throughout their lives.

Jeffrey Crespin, MD

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Jeffrey Crespin, MD, has been a practicing gastroenterologist in Manhattan for more than 20 years and has convenient office locations across New York City in the Upper East Side, Midtown East, and Midtown West. As a board-certified gastroenterologist, Dr. Crespin strives to provide the highest quality medical care in a compassionate, professional, and personalized manner.

Dr. Crespin graduated cum laude from Harvard University with a bachelor’s degree in biology. After spending a year studying cinema, psychology, and literature at the Sorbonne in France, Dr. Crespin attended Washington University School of Medicine in St. Louis, Missouri, where he graduated with his medical degree. He then completed his internship and residency training through the University of Minnesota before rounding out his training with a fellowship in gastroenterology at Northwestern Memorial Hospital in Chicago, Illinois. In addition to his medical education and training, Dr. Crespin has a Master of Business Administration from the New York University (NYU) Stern School of Business.

Before opening up his private practice, Dr. Crespin served as the director of the Columbia-St. Luke's Roosevelt GI clinic. He is expertly trained in endoscopic procedures, which allows for direct visualization of the intestinal tract for optimal diagnosis, treatment, and prevention of gastrointestinal diseases such as irritable bowel syndrome, Crohn’s disease, and colitis. To ensure his patients have access to the best care possible, Dr. Crespin conveniently offers same-day, late-hour, and weekend appointments.

Recognized as one of New York’s “Top Doctors,” Dr. Crespin is affiliated with NYU Lenox Hill Hospital, St. Luke's Roosevelt, and the Beth Israel hospitals. He is also a clinical assistant professor of medicine at NYU.

 

Priscilla Chow, MD, is a board-certified physician specializing in Pulmonary and Critical Care Medicine, committed to delivering compassionate, patient-centered care. She provides expert care to patients at TruDoc Medical LLC in Clifton, New Jersey. With a strong focus on improving respiratory health, Dr. Chow brings extensive expertise in diagnosing and managing a wide range of complex lung and breathing conditions.

She earned her Doctor of Osteopathic Medicine from the New York Institute of Technology College of Osteopathic Medicine. Following medical school, Dr. Chow completed an Internal Medicine Residency and advanced her training with a Fellowship in Pulmonary and Critical Care Medicine. Her comprehensive training has equipped her to treat conditions such as chronic obstructive pulmonary disease (COPD), asthma, interstitial lung disease, pulmonary hypertension, and acute respiratory distress syndrome (ARDS).

Dr. Chow takes a personalized approach to care, prioritizing open communication and collaboration with patients to develop tailored treatment plans. Whether managing long-term respiratory conditions or providing critical care in intensive settings, she is passionate about supporting patients through every stage of their health journey.

With a reputation for attentive, expert care, Dr. Chow looks forward to helping patients breathe easier and achieve better lung health.

Dr. Michael Aziz is a board-certified Internal Medicine physician, author, and a broadcast media commentator. He is as an attending physician at Lenox Hill Hospital in New York City. Dr. Aziz completed his medical training at Long Island Jewish Medical Center and Staten Island University Hospital in New York. He is a member of the American College of Physicians,  the American Society of Internal Medicine, and a fellow of the Royal Society of Medicine in the United Kingdom. Dr. Aziz is also a keynote speaker at numerous national and international conferences, including those organized by the American Academy of Anti-Aging Medicine.

As the founder of the practice that integrates traditional and functional medicine, Dr. Aziz focuses on addressing  the root cause of disease. He is the author of "The Perfect 10 Diet," a book that challenged outdated dietary guidelines in 2010. It is a book that was ahead of its time since it went against established medical guidelines for its position against fake fats promoted by the Amercian Heart Association, and the Harvard Food Pyramid. He advocated a balanced, natural diet with satuarted fats in 2010 long before the new USDA Food Pyramid was introduced in 2026.

Dr. Michael Aziz was among the first doctors to alert the public on national TV about the danger of seed oils, and trans fats 20 years ago, long before the media caught on.  Dr. Aziz was also among the first doctors to alert the public about the dangers of both low-carb and keto diets since nitrites in processed meats have been linked to many types of cancer.  

Upon The perfect 10 Diet release, Dr. Michael Aziz was featured on ABC's billboard in Times Square in NYC. He also made it on the cover of "First for Women," one of the largest magazines in the United States. The Perfect 10 Diet became an instant bestseller. The Perfect 10 Diet hit the number one spot on Amazon for 12 consecutive weeks in 2011, and was picked up to be translated into several foreign languages including; Italian, Chinese, Mandarin, Slovenian, Urdu, Malay, and Indonesian. Dr. Aziz and The Perfect 10 Diet were featured on countless TV shows including "The View," "The Doctors," "Fox and Friends," and "Dr. Oz." He has been a guest on hundreds of radio shows, podcasts, The Mel Robbins show, and NPR.  It was the start of his  national exposure.    

In 2025, Dr. Aziz published his second book, "The Ageless Revolution." It is the first book on the market that addresses aging as a disease. It is a new concept in medicine since it targets cellular malfunction. Alarmed by the high mortality rates in the US during the Covid-19 pandemic, Dr. Aziz emphasizes the need for proactive health measures to improve healthspan, and prolong lifespan. His approach integrates traditional and functional medicine aiming to treat aging rather than treating chronic age-related diseases using supplements, hormone replacement, and peptides. 

The second book was also an immediate bestseller, hitting the number 1 spot in anti-aging, longevity, menopause, and holistic medicine categories on Amazon for several weeks. The book was also picked up  to be translated into several foreign languages including Portuguese ( Brazil), Polish, and Chinese. 

Dr Aziz is a prolific contributor to Life Extension Magazine with the "Ask the Doctor"column which reaches 400,000 readers monthly. He had been a contributor to The Boardroom Newsletters which reached over 7 million subscribers with health advice in 2010's. He is a also a medical contributor to Biohackyourself (website and magazine) that reaches over 3 million people on social  media. Dr. Aziz's columns, articles, and opinions have been published in The LA Times, CNN.com, Fox.com, Newseek, The Washington Post, WebMD, The NY Post, the Daily News, Katie Couric Media, Harper's Bazaar, Forbes, as well as in hundreds of publications internationally around the world such as The Daily Mail, Paris Match, The Saigon Times, and El Arabyia.  Dr. Aziz regularly provides medical commentary on many health networks, including NBC, NPR, Fox, Fox 5 NY, ABC, WGN Chicago,  Telemundo, the Will Cain Show, Pix11, Fox 5, and Dubai TV.

Dr. Aziz is passionate about philanthropy. He volunteered in NYC during the Covid-19 pandemic, and treated underserved communities in remote villages of Indonesia. He is also donating the proceeds of The Ageless Revolution to  charity helping women affected by breast cancer. 

Dr. William Martin is a top-rated internist and primary care physician serving patients from Midtown Manhattan and throughout the Greater New York City metro region. As a skilled and compassionate physician, Dr. Martin is skilled in the diagnosis and treatment of a wide array of conditions, including sinusitis, bronchitis, asthma, diabetes, urinary tract infections, high cholesterol and high blood pressure, chronic fatigue, migraines, eczema, psoriasis, colds and other respiratory infections, back pain, anxiety and depression, and thyroid disorders.

Dr. Martin received his medical degree from the University of Vermont after receiving a bachelor's degree in chemistry from the same institution, and completed his residency in internal medicine at St. Lukes-Roosevelt Hospital in New York City. As a leading physician dedicated to the needs of his patients, Dr. Martin maintains active memberships in several medical associations and is a diplomate of the American Board of Internal Medicine.

Dr. Martin is a strong proponent of patient-centered care and patient education, ensuring each patient he treats receives the most appropriate care and treatment based on an in-depth evaluation of the patient's unique needs, medical history and current health status. During office visits, every patient receives the information they need to understand the medical issues they face, including existing and emerging disease risk factors, and the treatment options that are available to them so they can make confident and informed decisions about their care.

Dr. Martin enjoys meeting new patients at his practice on East 54th Street, and the practice accepts most major forms of medical insurance plans.

Dr. Jacqueline Chan received her Medical Degree from New York Medical College.   She completed her Internal Medicine residency in addition to a chief resident year at the former St. Vincent’s Catholic Medical Center.   Dr. Chan began her Cardiovascular Disease fellowship at St.   Vincent’s Catholic Medical Center and transitioned to New York Methodist Hospital to complete her clinical training.   She is proficient in exercise treadmill stress test, echocardiography, nuclear myocardial perfusion scan, and peripheral vascular duplex.   Dr. Chan completed training as a vein specialist and performs radiofrequency venous ablation in our ambulatory procedure lab.  Currently, she is the Medical Director of Echocardiography and Vascular Imaging for our accredited ICAEL and ACR facility.  Dr. Chan is multi-board certified in Internal Medicine, Echocardiography, Nuclear Cardiology, and Cardiovascular Diseases.

Jennifer Chen, MD, FACC, is a board-certified cardiologist specializing in internal medicine, echocardiography, nuclear cardiology, and cardiovascular diseases at Chinatown Cardiology, PC, in the Chinatown section of New York City and Brooklyn and Flushing, New York. Dr. Chen earned her undergraduate degree at the University of California, Berkeley. She then went on to complete her medical training at Albert Einstein College of Medicine in The Bronx, New York. She performed her residency at Mount Sinai Beth Israel and her fellowship at Lenox Hill Hospital. 

Dr. Chen only employs the latest technology to provide accurate diagnoses and up-to-date treatments. She utilizes cutting-edge imaging techniques to detect cardiovascular diseases. However, she is also skilled at using methods that have proven effective in the past, such as the exercise treadmill stress test, nuclear myocardial perfusion scans, and peripheral vascular duplex. Dr. Chen has received additional training as a vein specialist and performs radiofrequency ablation within the facility.  

Dr. Chen is committed to helping patients receive the care and attention they need. By combining the latest technology with her knowledge and pleasant demeanor, she can make patients feel confident that they are in the best care possible. To receive professional attention for any issue concerning the heart, make an appointment with Dr. Chen online or by phone today.

Dr. Henry Siu earned his Medical Degree from the Sophie Davis School of Biomedical Education/SUNY Downstate Medical Center. He completed his post-graduated training in Internal Medicine at Yale New Haven Hospital, and Cardiology/Interventional Cardiology Fellowship at Thomas Jefferson University Hospital in Philadelphia. 

Dr. Siu has expertise in general cardiology, multi-modality cardiac imaging, and vascular imaging. As an interventional cardiologist, Dr. Siu is highly skilled in cardiac catheterizations and peripheral vascular interventions, and management of complex coronary/valvular heart disease. He has proven experience in private practice and in the academic setting, with focus on providing the highest quality care and most up-to-date diagnostic and treatment strategies. In his free time, Dr. Siu enjoys exercising and playing the piano. Dr. Siu speaks Cantonese, Mandarin, and English.

 

 

Tak Kwan, MD, FAHA, FACC, FACP, FSCAI, is a board-certified and internationally renowned cardiologist at Chinatown Cardiology, PC, in the Chinatown and Upper West Side areas of New York City, Brooklyn and Flushing, New York. Chief of Cardiology, Lenox Hill Greenwich Village, Northwell Health, Director, Asian Practice Initiatives at Lenox Hill Hospital, Clinical Professor of Medicine/Cardiology, Zucker School of Medicine at Hofstra/Northwell, and President, Chinatown Cardiology, P.C. Dr. Kwan earned his medical degree and completed his residency at the State University of New York Downstate Medical Center. For the past 20 years, Dr. Kwan has been an active member within the Chinese community. He served as the president of the Chinese-American Medical Society. He then went on to establish Chinatown Cardiology in order to assist those in the neighborhood. Due to his generous donations and charitable services for the community, Dr. Kwan was awarded the Ellis Island Medal of Honor in 2010.

Dr. Kwan is now the interventional cardiology director at Mount Sinai West, the catheterization laboratory co-director at Mount Sinai Beth Israel, and the affiliate medical director of international services at Mount Sinai Health. He is affiliated with Mount Sinai Beth Israel, serving as a professor at the Icahn School of Medicine, the executive director of Asian services, and the site program director of interventional cardiology. Besides being directly involved in patient care, Dr. Kwan is also an active participant in clinical research.

Dr. Kwan is recognized internationally as an expert in general and interventional cardiology. Not only is he incredibly skilled, but he is also a pioneer in transradial cardiac catheterization, complex percutaneous coronary intervention, structural heart intervention, and transpedal lower extremity peripheral catheterization. Dr. Kwan is committed to providing only the best treatment available to his patients. Whether the patient is seeking treatment for routine heart disorders or is suffering from more complex symptoms, Dr. Kwan has the experience and skills necessary to ensure that the proper care and attention are provided to every patient at Chinatown Cardiology.

For a highly skilled and knowledgeable cardiologist, make an appointment with Dr. Kwan either online or by phone today.

 

Dr. David Lau received his Medical Degree and PhD degree in Physiology and Biophysics from NYU School of Medicine.   He completed his entire clinical training in Internal Medicine, Cardiovascular Disease, and Clinical Cardiac Electrophysiology at Columbia University - Presbyterian Medical Center.   Dr. Lau specializes in general cardiology and is an expert at the diagnosis of electrophysiological disorders and management after pacemaker, defibrillator, and remote cardiac monitor implantation.   Dr. Lau has presented his research at national meetings and published extensively in the area of electrophysiology.   He has a particular interest in the management of syncope and palpitations.   Dr. Lau is multi-board certified in Internal Medicine, Echocardiography, Cardiovascular Diseases, and Clinical Cardiac Electrophysiology and is Registered in Vascular Interpretations.

Arsalan Rehmani, MD, FACC, FSCAI is an Interventional and General Cardiologist at Chinatown Cardiology P.C. Dr. Rehmani completed his residency at BronxCare Health System followed by subspecialty fellowships in cardiology and interventional cardiology at Mount Sinai Morningside Hospital. He is board-certified in multiple subspecialties including Internal Medicine, Cardiovascular Disease, Interventional Cardiology, Adult Echocardiography, Nuclear Cardiology, Endovascular Medicine, and Cardiac CT.



Dr. Rehmani accepts new patients, and he currently provides consultations at various locations in New York City, including the Upper West Side and Chinatown in Manhattan, Queens, Brooklyn, and the Bronx. Dr. Rehmani is multilingual, being fluent in English, Urdu, Hindi, Russian, and Ukrainian.

Michael Liou, MD, FACC, FSCAI, is a skilled, board certified interventional cardiologist practicing at Chinatown Cardiology P.C., which has locations in Flushing, Brooklyn, Chinatown, and the Upper West Side of Manhattan. 

Dr. Liou earned his medical degree from SUNY Stony Brook School of Medicine after completing the prestigious Sophie Davis Biomedical Education Program at CUNY City College. He completed his internship and residency in internal medicine at NYU Langone Medical Center and performed his fellowship training in cardiovascular disease at Beth Israel Medical Center (now known as Mount Sinai Beth Israel) and returned to NYU Langone Medical Center for his advanced interventional cardiology subspecialty fellowship. 

Although he provides care for all cardiovascular conditions, Dr. Liou’s clinical expertise is in performing transradial cardiac catheterization, peripheral endovascular intervention, percutaneous mitral & aortic valvuloplasty, and ASD/PFO closure. He continues to participate in clinical research with a special focus on cardiovascular diseases affecting Asian Americans. 

Dr. Liou is multi-board certified in cardiovascular diseases, echocardiography, nuclear cardiology, and interventional cardiology.

A. Natalie Ascher, MD (FKA Natalie Marks, MD) is a board-certified vascular medicine physician who serves the community of Borough Park in Brooklyn, New York, at the Vascular Institute of New York. With more than 25 years of experience, Dr. Ascher is passionate about using the latest advancements in medical technology to diagnose and treat a wide range of vascular conditions, including hypertension, peripheral arterial disease (PAD), venous leg ulcers, and diabetic vascular disease.

Growing up in Ukraine, Dr. Ascher earned her Medical Doctorate from Crimea State Medical University in Simferopol, Ukraine. She later moved to the United States to complete her internal medicine residency at Maimonides Medical Center in Brooklyn. 

Dr. Ascher is certified by both the American Board of Vascular Medicine and Internal Medicine. She also holds certifications from the National Alliance of Wound Care and Ostomy and in Diagnostic Medical Sonography (RVT) for vascular technology as well as in vascular sonograms interpretation (RPVI).

In addition to her time at the Vascular Institute of New York, Dr. Ascher is an attending physician at Brooklyn’s Maimonides Medical Center, New York Community Hospital, and NYU Langone Brooklyn Medical Center. She also belongs to a number of professional organizations, including the American College of Physicians and the American Society for Vascular Medicine.

Click here to read Dr. A. Natalie Ascher's online profile.

Dr. Michelle Henry is an international speaker, trainer, and author. As a board-certified dermatologist and dermatologic surgeon, she has established herself as a prominent figure in the industry. Dr. Henry serves as the CEO and founder of Skin & Aesthetic Surgery of Manhattan, as well as the founder of The Henry Research Group. In addition to her private practice, she holds the position of Clinical Instructor of Dermatology at Weill Cornell Medical College.

Dr. Henry specializes in general dermatology, Mohs micrographic, and cosmetic surgery. She completed her residency in dermatology at Mount Sinai Hospital in New York City, where she served as Chief Resident. Following her residency, Dr. Henry pursued further specialization through a fellowship in cutaneous oncology, Mohs micrographic, and reconstructive surgery at Harvard Medical School. Driven by her passion for providing exemplary care, she focuses on high-risk skin cancer treatments, cosmetic surgery, hair loss solutions, skin rejuvenation techniques, and addressing the unique needs of diverse skin types.

Recognized for her talent and dedication, Dr. Henry has been featured in renowned publications such as Forbes, The New York Times, Harper's Bazaar, The Cut, Byrdie, and Coveteur. These features highlight her artistic prowess in the field of dermatology as well as her advocacy efforts. Furthermore, she has contributed significantly to the medical community through her extensive publications, authoring numerous articles and book chapters. She enjoys medical media and has globalized her teaching efforts as an on-air contributor for the Today show.

Dr. Henry's reputation is solidified by her inclusion in prestigious accolades such as Castle Connolly Top Doctor and New York Magazine Top Doctor. Additionally, she actively serves on multiple medical boards, conducts FDA clinical trials, and is a member of the product validation board at L'Oréal. She is a distinguished fellow of the American Academy of Dermatology, American Society of Dermatologic Surgery, and American College of Mohs Surgery. She also serves on the Board of Directors for the Melanoma Research Foundation and has been awarded their prestigious Excellence in Prevention award.

At the core of Dr. Henry's treatment philosophy lies a commitment to holistic care that integrates the latest advancements in technology and scientific research. She strives to provide her patients with the most effective and cutting-edge solutions, ensuring optimal outcomes and patient satisfaction.

Welcome to the Office of Dr. Irina Gressel

Irina Gressel, MD, is a skilled primary care physician and the medical director of Health Styles Medicare PC in New York City. Dr. Gressel brings her years of expertise to residents of Fort Greene, Brooklyn, and her dedication to improving the lives and health outcomes of all her patients.

Dr. Gressel completed her medical degree from Vitebsk State Medical University and an internship at Polotsk Central City Hospital, both located in Belarus. She then completed an additional internship and her residency at The Brooklyn Hospital Center in New York, where she remained as an attending physician for several years.

In addition to practicing medicine, Dr. Gressel served as a clinical instructor in medicine at New York University and is currently a clinical assistant professor of medicine through the Weill Cornell Medical College, based at The Brooklyn Hospital Center. She is a member of the American College of Physicians and the American Medical Association.

Under the direction of Dr. Gressel, Health Styles Medical Center PC is a primary care clinic dedicated to a comprehensive approach to treatment. At their modern office, Dr. Gressel and her team strive to implement the latest technology and techniques in their patients’ treatment plans. They offer a wide range of both primary care and aesthetic services, including routine annual exams, treatment for acne, Botox®, IV infusion therapy, and weight management. Dr. Gressel also offers the convenience of telemedicine services so patients can receive the care they need from the comfort of their homes.

IIrina Gressel, MD, is committed to high-quality care and service for all her patients. To make an appointment, call the office or book online today.

A distinguished graduate of the University of London Medical School, Dr. Talal Sharaiha further honed his expertise by achieving board certification in Internal Medicine at Albert Einstein Medical Center. Committed to continual learning, he expanded his skill set through specialized fellowships in Integrative Medicine and Culinary Medicine, uniquely positioning him to bridge the gap between Western medicine and Eastern philosophies. Dr. Sharaiha’s practice is rooted in a holistic vision. He leverages precision nutrition strategies, botanicals, and pharmaceuticals when necessary, crafting personalized care plans that empower patients to reclaim control of their health and vitality. Beyond clinical practice, Dr. Sharaiha is an accomplished innovator, holding four patents for groundbreaking medical devices designed to enhance nutrition delivery in critical care settings. His inventive contributions underscore his commitment to improving healthcare outcomes on a broader scale.

Dr. Sarah Fishman is an endocrinologist in private practice in New York City. At her practice in Midtown Manhattan, she provides a wide range of endocrinology care and services.

After completing her medical and PhD degrees at Mount Sinai School of Medicine, she continued her training in Internal Medicine and Endocrinology at Lenox Hill Hospital. She is affiliated with Mount Sinai Hospital and Northwell Health Lenox Hill Hospital, where she serves as an associate professor. As part of her academic appointment, Dr. Fishman has conducted research studies on evaluating biomarkers, chemicals that can be detected by blood tests, to identify patients with diabetes who may be at higher risk of cardiovascular events. In addition, she has spearheaded projects to improve physician and nurse empathy towards patients with diabetes, and on the use of continuous glucose monitors in hospitalized patients.

Recently, Dr. Fishman served as the in-house endocrinologist at Lenox Hill Hospital at the peak of the COVID-19 pandemic, working alongside critical care physicians to develop new protocols for the management of COVID-19 related endocrine disorders. She continues to be a valued teacher and mentor to residents and endocrine fellows.

Outside of the office and hospital, Dr. Fishman is a devoted mother, wife, daughter, and friend. When not on call, she can often be found sleeping in, building crafts with her kids, working on DIY home improvement projects, and enjoying the parks of New York City. She is an active member of her synagogue community and is known among her friends and colleagues for her reliability and fortitude.