Dr. Klyde is a board-certified endocrinologist with decades of clinical experience who believes that exceptional care begins with a strong doctor–patient relationship. His practice is built on trust, meaningful face-to-face time, clear communication, and thoughtful collaboration in medical decision-making. By prioritizing patient education and individualized care, Dr. Klyde provides compassionate, professional treatment that patients value and rely on.
Dr. Klyde has been recognized by The New York Times Magazine as a Super Doctor for 13 consecutive years and has been inducted into the 2026 Super Doctors Hall of Fame, reflecting his longstanding commitment to high-quality patient care.
Expert medical advice to help you make informed decisions.
Call for Appointment: (212) 772-3333
Email: Office@NYCEndocrinologist.com
Visit: 520 E72nd St. New York, NY 10021
Dr. Klyde’s BIOGRAPHY
Dr. Klyde grew up in Queens, obtained his undergraduate degree from Cornell, and his MD from Stanford. He did research at Rockefeller University during his endocrinology fellowship at Cornell. In addition to private practice, Dr. Klyde teaches endocrinology fellows at Weill Cornell Medical College.
In-Office Laboratory
Our medical office is equipped with the latest, state-of-the-art examination, testing and measurement equipment. From bone densitometry (DEXA) to blood chemistry analysis, many of the common tests needed to diagnose and manage treatment are right in the office, making best use of your time, and optimizing the quality of the test results.
Insurance Policy
In order to provide the best patient care, the office of Dr. Klyde does not accept insurance directly, and instead his staff will help you get reimbursement from your insurance company. To read more about why Dr. Klyde has chosen this path, what benefit it is to you, follow the link below:
What is Endocrinology?
Endocrinology is the medical specialty focused on the endocrine system: the network of glands that produce and regulate hormones. Hormones act as chemical messengers, traveling through the bloodstream to coordinate the function of organs and tissues throughout the body.
These hormones play a critical role in many essential processes, including growth and development, metabolism, energy use and storage, reproduction, sexual function, bone health, heart rate, and the regulation of blood sugar, fluids, and electrolytes. The endocrine system operates through a precise balance of signals and feedback loops designed to keep the body functioning normally.
When this balance is disrupted, symptoms may develop gradually or appear unrelated, making hormonal disorders difficult to recognize and diagnose. An endocrinologist specializes in identifying these imbalances, determining their underlying causes, and developing personalized treatment plans. When hormone-related conditions are suspected, an endocrinologist serves as an essential partner in diagnosis, management, and long-term care.
When should I see an Endocrinologist?
Many patients are referred to an endocrinologist by their primary care physician, though some choose to seek specialty care on their own. Endocrinologists focus specifically on hormone-related conditions and disorders, with advanced training in how hormonal imbalances affect the entire body.
For some individuals, symptoms and test results follow a clear and expected pattern. For others, the situation is far less straightforward. Hormonal conditions can develop gradually, present with subtle or overlapping symptoms, or fail to respond as expected to standard treatments. Patients may do everything right: following medical advice closely and maintaining disciplined care, yet continue to struggle without clear answers.
In these situations, an endocrinologist can provide deeper evaluation, specialized testing, and a more tailored approach to diagnosis and treatment. If you are feeling uncertain, frustrated, or concerned about a hormone-related condition, seeking endocrinology care can bring clarity and reassurance. You do not need to navigate these challenges alone, and reaching out for specialized care is an important step toward understanding and managing your health.
What types of things does an Endocrinologist Specialize in?
The practice of Dr. Barry J. Klyde is experienced in all areas of endocrinology, and particularly successful in diagnosing, treating and managing the following conditions:
Male Sexual Disfunction
Menopause
Vasomotor Symptoms (VMS)
Perimenopause
Osteopenia/Osteoporosis
Thyroid Disease
Metabolic Bone Disease
Osteoporosis
Osteomalacia
Fractures
Kidney Stones
Elevated Parathyroid
Pituitary Disease
Adenoma
Elevated prolactin
Adrenal Disease
Cushings disease or syndrome
Adenoma
Highly Rated by Patients Across New York City
“Dr. Klyde saved my life... I believe Dr. Klyde is unique in his clinical knowledge and approach (a national treasure). One example which you have likely not experienced: he is very thorough, will take your history for about an hour and answer all your questions.” — Patricia W. (Google)
“Dr. Klyde is an excellent “old school” doctor hard to find these days. He spent a lot of time talking with me and helping me make lifestyle changes as well as prescriptions to help me deal with my ailment. I thank him so much and recommend him to all my friends.” — Name Hidden (Rate MDs)
