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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.

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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Education and training

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

Languages spoken

• English
• Spanish
• Hebrew

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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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.