
- Longevity
- Weight management
- Metabolic health
Dr. Benjamin H. Krasne, M.D.
A board-certified physician who brings a rigorous, pharmacology-driven lens to longevity medicine and weight management.
Care at HealifyNow is overseen by licensed U.S. physicians, and every prescription, lab order and letter is decided by a licensed clinician. Here is who they are and how they work.
Independently licensed physicians who oversee care and medically review our health content.

A board-certified physician who brings a rigorous, pharmacology-driven lens to longevity medicine and weight management.

A Columbia-trained physician and former collegiate athlete focused on metabolic function, body composition, and healthspan.

A board-certified OB-GYN and ACOG Fellow with more than four decades of experience in women's health.
Dr. Benjamin H. Krasne is a board-certified physician whose deep understanding of human physiology and clinical precision positions him as a powerful force in longevity and metabolic health. A graduate of the University of Miami Miller School of Medicine, Dr. Krasne completed his residency at Jackson Memorial Hospital — one of the nation's foremost academic medical centers — where he developed an advanced mastery of how the body responds to stress, recovery, and optimization at the physiological level.
Board-certified by the American Board of Anesthesiology, Dr. Krasne brings a uniquely rigorous, science-driven lens to longevity medicine and weight management. His expertise in pharmacology, pain physiology, and metabolic responses gives him a sophisticated foundation for understanding the biological mechanisms that drive aging, inflammation, hormonal imbalance, and weight gain — and, more importantly, how to reverse them.
Dr. Krasne believes sustainable weight loss and healthy aging are not the result of quick fixes, but of precise, personalized interventions rooted in clinical science.
Dr. Johnathan Chance Miller is a physician and holistic medicine practitioner dedicated to helping patients live longer, healthier, and more vibrant lives. Dr. Miller earned his medical degree from Columbia University College of Physicians and Surgeons in New York City and completed his internship and residency at Washington University in Saint Louis — institutions renowned for producing some of the country's most innovative medical minds.
A former collegiate athlete and rugby team captain, Dr. Miller understands firsthand the relationship between physical performance, nutrition, and long-term wellness. This lived experience drives his commitment to optimizing metabolic function, body composition, and healthspan for his patients.
As a physician at the forefront of holistic medicine, Dr. Miller blends cutting-edge science with personalized lifestyle strategies to address the root causes of weight gain, metabolic dysfunction, and accelerated aging.
Dr. Vanessa Niles is a board-certified Obstetrician-Gynecologist and Fellow of the American College of Obstetricians and Gynecologists (FACOG) with more than 40 years of experience in Obstetrics and Gynecology. She earned her Doctor of Medicine degree from Meharry Medical College and completed her residency training in Obstetrics and Gynecology at Brookdale University Hospital and Medical Center.
She has a well-established and respected history of worldwide medical collaboration, research, philanthropy, and outreach. She was appointed by former President Bush as an International Medical Ambassador, reflecting her global commitment to women's health and medical excellence.
Throughout her distinguished career, Dr. Niles has remained a passionate advocate for her patients, combining clinical expertise with a holistic, compassionate approach to care.
Licensed clinicians who evaluate patients for emotional support animal letters and psychiatric service dog letters.
Reviews each evaluation and issues HealifyNow's emotional support animal and psychiatric service dog letters.
Conducts mental health evaluations and issues HealifyNow's emotional support animal and psychiatric service dog letters.
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