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Dexter McKenzie, MD, is an experienced internist and pediatrician serving patients of all ages at LaSante Health Center in the Prospect Lefferts Gardens area of Brooklyn. Dr. McKenzie has served the central Brooklyn community for over 30 years as a registered pharmacist and physician and treats a wide range of medical conditions for adults and children in New York City. 

After immigrating to Brooklyn from the Caribbean, Dr. McKenzie attended the public schools in the area, then received his Bachelor of Science in pharmaceutical and health sciences from Arnold and Marie Schwartz College of Pharmacy & Health Sciences at Long Island University in New York City. He completed his Doctor of Medicine at Meharry Medical College in Nashville, Tennessee, and was honored with a residency and internship in internal medicine and pediatrics from Kings County Hospital in New York City. 

Dr. McKenzie is proud to serve a diverse range of patients at LaSante Health Center and advocates as a health educator, mentor to youth, and for the medical care of single mothers and senior citizens. He is passionate about supporting the local arts and small businesses. His involvement in the community has garnered him several awards and recognition. 

Dr. McKenzie is president of the Provident Clinical Society of Brooklyn, and a member of the National Medical Association, Medical Society of the State of New York, New York Empire State Medical Association, and The Medical Society of the County of Kings.

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Emmanuel Valery, MD, is a board-certified internist at LaSante Health Center in the Prospect Lefferts Gardens area of Brooklyn. Dr. Valery diagnoses and treats chronic illnesses, offers preventative and primary care, and provides excellent treatments for patients in New York City with cardiovascular, digestive, respiratory, circulatory or other chronic health issues.

Dr. Valery was born in Port-au-Prince, Haiti, and has been in the medical field for over three decades. He immigrated to New York, where he received his Bachelor of Science from Long Island University in New York City. Dr. Valery then completed his Doctor of Medicine at The Universidad del Noreste (UNE) School of Medicine in Tampico, Mexico. He went on to finish his residency in internal medicine at Kings County Hospital and completed the prestigious Fifth Pathway program for the Albert Einstein College of Medicine, both in New York City. 

Serving the community for years, Dr. Valery was the medical director at NewYork-Presbyterian Brooklyn Methodist Hospital, the CEO of Bedford Medical Group, and practiced at SUNY Downstate Medical Center, Kings County Hospital and the Bronx Lebanon Special Care Center, all in New York City.

Dr. Valery leads several community service and outreach initiatives and is a member of the NOAH NY, a not-for-profit organization that helps provide free health care to residents of Haiti. He has received numerous awards for his efforts.

As an immigrant and multilingual in English, Haitian Creole, French, and Spanish, Dr. Valery is passionate about serving diverse patients at LaSante Health Center. He brings years of medical knowledge to provide quality internal medicine care.

Dr. Valery is a member of the American Medical Association, Asclepius Medical Society, and certified by The American Board of Internal Medicine.

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Education and training

• State University of New York, Downstate Medical Center, Master's in Family Nursing

Languages spoken

• English
• Spanish
• Hebrew

Dr. Bella Halpert is a nephrologist specializing in hypertension, chronic kidney disease and dialysis management. She believes good kidney care starts with listening, and she works closely with patients from early diagnosis through dialysis to make complex decisions feel clear and manageable.

Raised in Brooklyn, New York, Dr. Halpert completed both her internal medicine residency and her nephrology fellowship at One Brooklyn Health, Brookdale Hospital, where she was selected as Chief Fellow and devoted much of her time to teaching and mentoring the next generation of physicians. Multilingual in four languages, including Russian, Ukrainian, Hebrew, and Yiddish, Dr. Halpert connects easily with the diverse communities she serves. She brings deep compassion and a strong work ethic to every patient she serves.

At LaSante Health, she is committed to care that is thorough, accessible, and grounded in trust.

Gritz Pierre, MD, is the founder, owner, and medical director of Genesis Personal Healthcare Medicine.
He is a board-certified physician with dual certification in Emergency Medicine and Family Medicine and holds an MBA with a concentration in Healthcare Administration. His background combines extensive frontline clinical experience with formal training in healthcare management, supporting both the clinical and operational requirements of the Company.

Dr. Pierre maintains active medical licenses across multiple U.S. states, enabling nationwide telemedicine practice and supporting the Company’s multi-state service delivery model. His clinical experience spans high-acuity emergency departments, critical access hospitals, ICU-capable facilities, and inpatient hospital medicine settings. In addition, he has extensive outpatient experience working in rural clinics throughout Southern Illinois, providing primary and urgent care services in medically underserved communities.

His professional experience includes independent emergency medicine practice, nocturnist hospital medicine, and ICU-level patient management. Dr. Pierre has served in environments requiring autonomous decision-making, rapid clinical assessment, and coordination of complex care, including stabilization of critically ill patients prior to ICU admission or interfacility transfer.

He has also participated in healthcare fairs and community outreach events, providing physical examinations and preventive care services for local schools and community members.

In addition to his clinical background, Dr. Pierre’s MBA training provides experience in healthcare administration, operations, and financial oversight. This dual competency supports informed governance of Genesis Personal Healthcare Medicine, particularly in areas of regulatory compliance, provider oversight, and operational scalability.

Dr. Golali Nejati is a board-certified Internal Medicine physician serving patients in Brooklyn, New York. He provides comprehensive medical care with a focus on prevention, early diagnosis, and the effective management of both acute and chronic health conditions.

Dr. Nejati earned his Doctor of Medicine degree from Tabriz University of Medical Sciences Faculty of Medicine. With extensive experience in internal medicine, he evaluates and treats a wide range of medical concerns and provides ongoing care for patients who require regular monitoring and follow-up.

His approach emphasizes attentive, individualized care and helping patients better understand and manage their health. From routine medical evaluations and preventive care to the management of ongoing medical conditions, Dr. Nejati is committed to providing thorough and compassionate care tailored to each patient’s needs.

Dr. Nejati practices with Cyrus Medical Group in Brooklyn, New York.

• Medical Degree: Tabriz University of Medical Sciences Faculty of Medicine
• Specialty: Internal Medicine
• Board Certification: American Board of Internal Medicine
• Practice: Cyrus Medical Group

Dr. Yukiko Oe is a dedicated internist providing comprehensive primary care to patients in Edgewater, New Jersey. She is committed to delivering personalized, patient-focused care that helps individuals achieve and maintain their optimal health.

After earning her medical degree from Gunma University School of Medicine, Dr. Oe moved to the United States to complete her internal medicine training at Montefiore Medical Center in New York City. She gained valuable experience as a hospitalist and further specialized by training in Pulmonology and Critical Care Medicine at Rutgers New Jersey Medical School. Dr. Oe is currently practicing in Pulmonology and Critical Care at Valley Hospital.

At Hibari Family Medical, Dr. Oe focuses on primary care services tailored to meet the unique needs of each patient. She is dedicated to fostering strong patient relationships and ensuring individuals feel supported, heard, and empowered throughout their healthcare journey.

To schedule an appointment with Dr. Oe, call the office or use the online booking tool.

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About Harlem Cardiology on Madison Avenue

Harlem Cardiology on Madison Avenue provides comprehensive cardiovascular services for the community of East Harlem in New York City since 2003. Heart- and vascular-related diseases are some of the most serious, complex, and widespread health problems in the United States. Henock Saint-Jacques, MD, FACC, and the team at Harlem Cardiology on Madison Avenue specialize in treating conditions such as coronary artery disease (CAD), congestive heart failure (CHF), valvular heart disease, arrhythmia, peripheral vascular disease (PAD), and stroke.

Dr. Saint-Jacques is a Fellow of the American College of Cardiology, the highest honor in cardiovascular medicine that only the very best physicians receive. In addition, Harlem Cardiology on Madison Avenue has some of the leading physicians in the field, providing outstanding diagnostic and treatment services as well as chronic care management for long-term cardiovascular conditions. The entire team is committed to preventing heart disease wherever possible and treating patients who have cardiovascular conditions using the most effective, up-to-date methods and state-of-the-art technology.

Harlem Cardiology on Madison Avenue works with leading researchers and world-renowned experts carrying out clinical research studies, and the cardiovascular physicians all have backgrounds at the foremost medical institutions, such as Harvard, Duke, New York universities, and the Mount Sinai Hospital.

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. 

About Harlem Cardiology on Madison Avenue

Harlem Cardiology on Madison Avenue provides comprehensive cardiovascular services for the community of East Harlem in New York City since 2003. Heart- and vascular-related diseases are some of the most serious, complex, and widespread health problems in the United States. Henock Saint-Jacques, MD, FACC, and the team at Harlem Cardiology on Madison Avenue specialize in treating conditions such as coronary artery disease (CAD), congestive heart failure (CHF), valvular heart disease, arrhythmia, peripheral vascular disease (PAD), and stroke.

Dr. Saint-Jacques is a Fellow of the American College of Cardiology, the highest honor in cardiovascular medicine that only the very best physicians receive. In addition, Harlem Cardiology on Madison Avenue has some of the leading physicians in the field, providing outstanding diagnostic and treatment services as well as chronic care management for long-term cardiovascular conditions. The entire team is committed to preventing heart disease wherever possible and treating patients who have cardiovascular conditions using the most effective, up-to-date methods and state-of-the-art technology.

Harlem Cardiology on Madison Avenue works with leading researchers and world-renowned experts carrying out clinical research studies, and the cardiovascular physicians all have backgrounds at the foremost medical institutions, such as Harvard, Duke, New York universities, and the Mount Sinai Hospital.

The Heart Center of the Oranges, PA, is a medical practice with multiple locations: West Orange, East Orange, South Orange, Maplewood, Newark, Belleville, Bloomfield, Nutley & Livingston, New Jersey. Led by a skilled team of physicians, nurses, and other medical professionals, the practice serves people aged 20 and older in person and virtually via telemedicine.

The Heart Center of the Oranges, PA, offers specialty services, including cardiology, endocrinology, gynecology, internal medicine, neurology, podiatry, pulmonology, women’s wellness, pediatric endocrinology, nutrition, and sleep medicine. Patients with chronic diseases or general medicine concerns can turn to the highly trained experts at The Heart Center of the Oranges, PA, for superior care.

The skilled medical team personalizes each treatment plan based on a patient’s medical needs, lifestyle, and desired outcomes.

Those with diabetes, foot or ankle issues, gynecology concerns, or heart, kidney, or lung diseases rely on The Heart Center of the Oranges, PA, for exceptional care in a welcoming setting. Undergoing routine care reduces the risk of bothersome symptoms and severe medical complications. 

The Heart Center of the Oranges, PA, team is friendly, providing top-notch patient-centered care using the latest advances in technology and research-backed treatments. They compassionately welcome new and existing patients to the practice.

Schedule an in-person or telehealth appointment at The Heart Center of the Oranges, PA, by phone or online today.