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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 54^th Street, and the practice accepts most major forms of medical insurance plans.

Henock Saint-Jacques, MD, FACC, is a distinguished cardiologist and head clinician at Harlem Cardiology on Madison Avenue in East Harlem of New York City. Dr. Saint-Jacques is held in high esteem throughout New York City and is a deservedly popular speaker at medical conferences and meetings. He also mentors medical students and postgraduate fellows.

Dr. Saint-Jacques studied for his medical degree at Universidad de Ciencias Medicas (UCIMED) in San Jose, Costa Rica. After graduating, he relocated to New York City for a residency in internal medicine at Cabrini Medical Center, which he completed in 1998, followed by a fellowship in cardiology at the Montreal Heart Institute in Canada. After completing his fellowship in 2001, Dr. Saint-Jacques studied at Duke University School of Medicine in Durham, North Carolina, and achieved cardiovascular disease certification with the American Board of Internal Medicine in 2003.

Dr. Saint-Jacques is a Fellow of the American College of Cardiology, a distinction that recognizes members who have achieved exceptional standards of professional excellence and made a significant contribution to the field of cardiovascular medicine.

Preview Dr. Saint-Jacques Doximity Profile HERE. 

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 has also been 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 Diet," a book that challenges outdated dietary guidelines, and advocates a balanced diet which include butter, and full-fat products. Dr. Michael Aziz was among the first doctors to alert the public about  the danger of seed oils fifteen years ago long before the media caught on.  Dr. Aziz was also the first doctor to alert the public about the dangers of both low-carb and keto diets since he does not allow any chemicals in his plan such as nitrites since the they have been linked to many types of cancer.  

Upon release, The Perfect 10 Diet and Dr. Michael Aziz were 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  national bestseller. The Perfect 10 Diet hit the number one spot on Amazon for 12 consecutive weeks in 2011. The Perfect 10 Diet was 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 featured on hundreds of radio shows, NPR, and the Mel Robbins show. 

In 2025, Dr. Aziz released his second book, "The Ageless Revolution,' a book that addresses aging as a disease by targeting the cellular malfunction. Alarmed by the high mortality rates in the US during the COVID-19 pandemic even in young people, Dr. Aziz was motivated to treat aging as a disease. He emphasizes the need for proactive health measures to increase the lifespan in the US. His approach integrates traditional and functional medicine aiming to treat aging rather than treating chronic age-related diseases. 

The book was also an immediate bestseller upon release, hitting the number one spot in the longevity category on Amazon. It remains as a top selling book in the longevity category. The book has also been picked up  to be translated into several foreign languages.

Dr Aziz is a prolific medical contributor to Life Extension Magazine with the "Ask the Doctor"column which reahes 400,000 readers monthly. He has also been a contributor to The Boardroom Newsletters which reached over 7 million subscribers with health advice. Dr. Aziz's columns, articles, and opinions have been published in The LA Times, CNN.com, Fox.com, The Washington Post, WebMD, The NY Post, the Daily News, Katie Couric Media, Forbes, as well as in tens 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, ABC, WGN Chicago,  Telemundo, and Dubai TV. Dr. Aziz is passionate about philanthropy. He volunteered to help New Yorkers during the Covid-19 pandemic, and treated the underserved in the rural islands of Indonesia. He is also donating the proceeds of The Ageless Revolution for charity to help women affected by breast cancer. 

Dr. Saltzman realized a calling to medicine during the height of the HIV/AIDS crisis in New York City in the mid-eighties.  Prior to entering the field of medicine Dr. Saltzman worked in the music business for record companies and publishers. Moving in the NYC club scene of the nineties, Dr. Saltzman saw many of her friends and colleagues become ill with AIDS.  She observed the rampant prejudice and stigma that LGBTQ people and IV drug users suffered, and committed herself to becoming a physician specializing in HIV/AIDS.

Despite not having a background in the sciences Dr. Saltzman was able to earn admission to medical school, while supporting herself as a single parent.  After medical school, she chose to do her residency at St. Vincent’s Hospital in New York City, which was at the forefront of providing specialized treatment for patients with HIV/AIDS.  After completing her residency, she practiced at the Samuels Clinic at Roosevelt Hospital (now The Institute for Advanced Medicine at Mount Sinai), a major outpatient center for patients during the epidemic.  While practicing at the Samuels Clinic, Dr. Saltzman was an early prescriber of the “triple cocktail”, the first effective combination therapy for HIV.

Dr. Saltzman’s interest in addiction was born out of her experience providing care for HIV/AIDS patients who were often IV drug users. She was one of the first physicians in New York City to embrace the use of Suboxone, a novel medication for the treatment of opiate addiction, that allows patients to access treatment without daily clinic visits as is the case with methadone therapy.  Suboxone was one of the first therapies approved for in-office prescribing under the federal Drug Addiction Treatment Act of 2000. By prescribing Suboxone on an outpatient basis Dr. Saltzman is able to help patients get back to their work and family, and functioning at a high level.

Dr. Saltzman founded her busy Midtown Health and Wellness Center in 2000.  She focuses on providing individualized care, realizing that patients need more than the standardized approach for addiction treatment.  Dr. Saltzman provides guidance through all stages of recovery, supporting patients with primary care, individual and group therapy. She feels addiction is treated incorrectly in many settings with a focus on simply handing out prescriptions, instead of a more comprehensive approach.
Dr. Saltzman is a well-known expert in the field of addiction and regularly expresses her views on television, radio, and in the press.  She uses warmth and humor to engage with her patients. She understands where they’re coming from and does not judge them, using empathy and compassion to deliver the most appropriate individualized treatment options.

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.

 

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.   

Robert Waxman, MD Board Certified Radiologist. He completed his fellowship at Body Imaging & Musculoskeletal, Thomas Jefferson University Hospital, Philadelphia, PA. Dr. Waxman is extremely knowledgable in any musculoskeletal imaging. 

Damon Spitz, MD Board Certified Radiologist in Musculoskeletal Radiology. Dr. Spitz completed his fellowship at New England Baptist Hospital Beth Israel Deaconess Medical Center.  Dr. Spitz plays a key role in expanding the radiology and interventional pain services and building a strong foundation for musculosketal reads.

 

 

Elizabeth Sharp Edens, M.D., DABOM, IFMCP is a board-certified Internal Medicine and Obesity Medicine Physician, Institute for Functional Medicine Certified Practitioner and the founder of Health Meets Wellness. Dr. Sharp started Health Meets Wellness to make functional medicine more accessible, combining her expertise in healthcare with physical activity, specifically yoga. Dr. Sharp completed her 200-hour yoga teacher training and believes in combining daily movement practices with medicine to help treat her patients. She is dedicated to helping her patients reach their wellness goals and developed the Health Meet Wellness method with Troy Flanagan, Ph.D. and Susie Parker-Simmons, RDN, specifically to help patients with weight management. 

In addition to her innovative practice, she is an Assistant Professor at Mount Sinai Hospital. She graduated medical school Magna Cum Laude from St. George’s University and completed her residency in Manhattan at Lenox Hill Hospital. After residency, she worked for Mount Sinai Doctors where she was awarded the Cullman Family Award for Excellence in Physician Communication and worked at OneMedical. Through her education and real-life experience, Sharp uncovered that taking a functional medicine approach helps diagnose and treat the root cause of her patient’s symptoms and disease processes. Her patient-centered style of practice combines diet and lifestyle with medicine to deliver multifaceted, holistic care for her patients. When she's not seeing patients she enjoys cooking, hiking, rock climbing , running, yoga and spending time with her friends and family.

As a highly motivated and dedicated bilingual community-based physician at identID Health, I have the privilege of being part of a leading online telemedicine clinic. Our focus is on delivering specialized, comprehensive and expert care in weight loss management, testosterone replacement therapy, erectile dysfunction, insomnia, hair loss, and performance anxiety. We are committed to serving both men and women, ensuring that each patient receives personalized care tailored to their unique needs. At identID Health, I am committed to guiding you on a journey towards taking control of your lifestyle. Through empowering, stigma-free healthcare, we work together to achieve your health goals. Our approach is not just treating symptoms; it's about fostering a holistic transformation that promotes overall well-being and a higher quality of life. Join me and the team at identID Health, by choosing our services, you are taking the first crucial step towards a healthier, more vibrant you.

Ahmadur Rahman is a detailed and thorough physician specializing in internal medicine and primary care. Dr. Rahman is serving his patients in Manahattan, NY and Jamaica, NY with his two private practices. He is certified by the American Board of Internal Medicine. 

Dr. Rahman received his doctorate degree from the Ross University School of Medicine. He then completed his Internal Medicine residency at the Newark Beth Israel Medical Center. Dr. Rahman welcomes patients to his practice who are experiencing issues such as acne, bunions, arthritis, asthma, ear infections, and diabetes. With his informative bedside manner, Dr. Rahman works to a solution for improved health and healing. Dr. Rahman provides services for his patients that include annual physicals, ECG/EKG, bone density measurements, and annual skin screenings, among many others. 

Dr. Rahman enjoys participating in outdoor activities, when time permits. He enjoys spending time with his family, photography, and traveling.

Dr. Rafael A. Guillén is an internist in the Bronx, in New York City. As the physician at R. Guillén MD PC, Dr. Guillén offers a wide range of care including allergy care, help with obesity, hepatitis care, diabetes care, cholesterol management, high blood pressure treatment, asthma treatment, and arthritis treatment. R. Guillen MD PC is a Patient-Centered Medical Home, recognized by the National Committee for Quality Assurance for providing coordinated, advanced primary care, ensuring that patients are put in the forefront of their care, and a commitment made for continuous quality improvement. Dr. Guillén offers comprehensive health care for adults in the Bronx area. He’s bilingual in English and Spanish and has also carefully chosen a multi-lingual staff for the convenience of his patients.

Dr. Guillén attended the University Eugenio Maria de Hostos School of Medicine in the Dominican Republic. He completed his residency in Internal Medicine at the Bronx-Lebanon Hospital Center in the Bronx, New York. Dr. Guillén is a Diplomate of the American Board of Internal Medicine, and a Fellow of the American College of Physicians. He is an active member of numerous medical organizations, including the American Medical Association, the American College of Physicians, and the Dominican College of Physicians.

Dr. Guillén and his team look forward to seeing new patients and established patients alike. Contact the office anytime to arrange an appointment.

Dr. Barry Cohen is an Internal Medicine/Primary Care physician in New York City. He has worked in private practice and as an Attending Physician for the Montefiore Medical Group in the Bronx. He currently has a private practice in the Soho area of Manhattan. Dr Cohen was a Clinical Instructor of Family and Social Medicine at the Albert Einstein School of Medicine for approximately 12 years.. He is currently affiliated with the Mount Sinai/Beth Israel Medical Center of New York, where he is an Attending Physician. Earlier in his career he spent 3 years working with Doctors of the World in their Human Rights Clinic.

Dr. Marissa T. Santos has more than 25 years of experience as a board-certified internist and aesthetic medicine physician. At her Woodside, New York solo practice, Marissa T. Santos, M.D., Dr. Santos offers a wide variety of care for adult patients, including preventive health care, laser hair removal, CoolSculpting® fat removal, screenings including Pap smear, and many other kinds of care. As a licensed Civil Surgeon, Dr. Santos performs medical immigration exams as well.

Dr. Santos is Patient-Centered Medical Home (PCMH) certified. The PCMH certification is a highly respected one that means a physician is qualified to manage the entire spectrum of patient health needs. If patients need specialists, they’re right on the premises. Dr. Santos maintains local hospital affiliations to be there for her patients at all times,

Having earned her medical degree at the University of Santo Tomas in Manila, Philippines, Dr. Santos then continued her medical education at the State University of New York Downstate Medical Center, the Jersey Shore University Medical Center, and the New York Hospital in Queens. Dr. Santos regularly attends internal medicine conferences so that she can keep her practice up-to-date with the newest advances in medicine.

Dr. Santos speaks Spanish, English, Filipino, and Russian, and she enjoys talking with patients in the language they feel most comfortable speaking. Use the online appointment tool to schedule now, or call for an appointment with Dr. Santos.

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.

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.

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.

 

 

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.