top of page

About us

Teresa McGuinness

Nurse Practitioner


Teresa McGuinness is a board-certified Family Nurse Practitioner.  She started her nursing career in 2003 as a registered nurse. From 2003-2015 she worked mainly in the critical care field.  In 2015 she completed her Master of Science in Nursing as a Family Nurse Practitioner. 


Not long after becoming a Nurse Practitioner, Teresa became interested in hormone optimization and was lucky enough to work with a group that was already doing hormone replacement. This is where she gained much of her hormone replacement experience.

Teresa understands how hard it is to lose weight and keep it off.  Throughout her life she has fought the weight battle.  She understands that hormones play a crucial role in maintaining weight loss. Any disruptions will cause fast weight gain.  It takes time to realize the cause, and time to correct it.  Hormone levels must be monitored regularly to avoid and correct  imbalances as soon as possible. 

Dr. Mihaela Perijoc
Supervising Physician


Mihaela Perijoc, MD, MHA, is an eminent board-certified internal medicine physician and functional medicine specialist providing exceptional health care for patients at North Texas Internal Medicine Specialists in Plano, Texas. Dr. Perijoc has outstanding medical skills that she combines with a passion for providing the highest standard of care for her patients.


Dr. Perijoc is a distinguished figure in her field, undertaking teaching roles at several Texas universities and holding membership in the American College of Physician Executives and the American Medical Directors Association, for whom she is a certified medical director for nursing homes. Dr. Perijoc also provides comprehensive and compassionate care and support for patients and their loved ones at hospice facilities across Texas.

Dr. Perijoc is an extraordinary physician who sets standards other medical professionals rarely match. The residents of Plano are fortunate to have a doctor of her caliber caring for their health.

Dr. Perijoc's experience and training makes her an invaluable resource for Princeton Hormone & Weight Loss.

Kenneth Seligman
Office manager and Clinical Assistant


bottom of page