Meet the Experts Behind Aquarius Performance & Wellness

At Aquarius Performance & Wellness, our expert team is dedicated to helping you achieve optimal health through personalized care and science-backed solutions. With advanced training in IV therapy, phlebotomy, hormone optimization, longevity medicine, weight loss, and wellness treatments, our practitioners are committed to empowering you with the tools and support needed to feel your best from the inside out. Whether you're looking to boost energy, balance hormones, or improve recovery, our skilled providers are here to guide you every step of the way.

Jennifer Orenstein, APRN, FNP-BC, AGACNP-BC

Founder & Nurse Practitioner, Aquarius Performance & Wellness LLC

Jennifer is a board-certified Nurse Practitioner and the visionary founder of Aquarius Performance & Wellness, a premier wellness practice dedicated to optimizing health and enhancing longevity. With a double board certification in both Family practice and Acute care medicine she mainly specializes in cutting-edge longevity treatments designed to promote vitality and overall well-being.Passionate about evidence-based, holistic healthcare, Jennifer integrates advanced medical therapies, including hormone optimization, regenerative medicine, peptide therapy, IV nutrient therapy, weight management treatments and personalized wellness plans. Her patient-centered approach empowers individuals to take control of their health through proactive and sustainable lifestyle interventions aimed at treating root causes.

  • With a deep commitment to education and innovation, Jennifer continually stays at the forefront of longevity research, ensuring that patients receive the most effective and science-backed treatments available. She believes that aging is not just about adding years to life but enhancing the quality of life with vitality, energy, and resilience.

    At Aquarius Performance & Wellness, Jennifer and her dedicated team provide compassionate, individualized care to help patients achieve their optimal health potential. Whether focusing on preventive strategies, bioidentical hormone therapy, or cutting-edge regenerative treatments, Jennifer is dedicated to transforming the aging process and redefining what it means to thrive at every stage of life. Her goal is to help you look better, feel better and perform better from the inside out! 

    • Masters of Nursing Practice, University of Saint Joseph

    • Board-Certified Family Nurse Practitioner (FNP-BC)

    • Board-Certified Acute Gerontology Adult Nurse Practitioner (AGACNP-BC) 

    • Advanced Training in Longevity & Regenerative Medicine

    • Member of AIVA, Mass Coalition of Nurse Practitioners 

    • WorldLink Medical Training & Certification (underway)

    • Longevity & Anti-Aging Medicine

    • Men’s Health- testosterone replacement therapy 

    • Bioidentical Hormone Therapy

    • IV Nutrient Therapy

    • Regenerative & Integrative Medicine

    • Preventive & Functional Healthcare

Jessie Fisher, DNP, FNP-BC

Advanced Practice Nurse Practitioner | Weight Management & Hormone Optimization

As a board-certified Nurse Practitioner with a Doctorate in Nursing Practice, Jessie Fisher is passionate about helping individuals optimize their metabolic function and overall well-being. Specializing in clinical weight management and hormone balance, she provides a science-based, personalized approach to sustainable health. With certifications from A4M and extensive experience in both men’s and women’s wellness, Jessie empowers patients to take control of their health and vitality.

Beyond the clinic, Jessie is happiest outdoors—hiking, enjoying the ocean air, and spending time with her family. She believes that small, consistent steps lead to lasting transformation, and she’s dedicated to guiding patients on their wellness journey.

Janet Helliwell, RN, MSN, FNP-BC

Board-Certified Family Nurse Practitioner | Women's Health & Wellness Advocate

Bringing over 30 years of healthcare experience, Janet Helliwell is a board-certified Family Nurse Practitioner passionate about holistic, patient-centered care. With expertise spanning acute hospital care, geriatric medicine, addiction medicine, family medicine, and clinical research, she is dedicated to empowering patients to achieve long-term wellness. Certified in Women’s Health and Menopause Coaching, Janet focuses on education, prevention, and individualized treatment plans to enhance quality of life.

In her personal time, Janet enjoys outdoor adventures with her husband and grown children, whether at the beach or in the mountains. She also finds relaxation in reading, yoga, and continuous learning to stay at the forefront of wellness care.

Tracey Choquette, MSN, FNP-C

Family Nurse Practitioner | Hormone Therapy & Weight Loss Specialist

With over 15 years of nursing experience, Tracey Choquette is a board-certified Family Nurse Practitioner dedicated to helping patients achieve and maintain optimal wellness. Since joining Aquarius in 2022, she has specialized in hormone therapy and weight loss, guiding individuals toward sustainable health solutions. Her approach integrates science-backed treatments with a deep commitment to patient education and empowerment.

Outside of work, Tracey enjoys traveling to explore new places and cherishes time spent with her family. She believes that true wellness is a lifelong journey and is passionate about supporting her patients every step of the way.

Allegro, Lead RN

Emergency Medicine Nurse | IV Therapy Specialist Mobile IV & Concierge Wellness, Lead Practice RN

With over 15 years of nursing experience and eight years dedicated to the fast-paced world of emergency medicine, Allegro brings a wealth of expertise and compassionate care to every patient encounter. As a founding nurse, lead practice RN and valued team member at Aquarius Performance & Wellness, Allegro has been committed to delivering exceptional IV / IM therapy services and leadership since day one, working alongside close friend and colleague, Jenn.

Allegro thrives in environments that demand quick thinking, precision, and unwavering dedication to patient care. Whether in the ER or providing IV therapy, her passion for helping others achieve optimal health remains at the heart of her practice.

Beyond her professional life, Allegro prioritizes quality time with family, a commitment to fitness, and a love for travel—embracing adventure and wellness in all aspects of life.

MaryKate Kwarcinski, RN

Emergency Medicine Nurse | IV Therapy Specialist

With over a decade of experience at Baystate Medical Center, including seven years in the fast-paced emergency department, MaryKate Kwarcinski brings expert clinical skills and compassionate care to every patient she serves. She holds certifications in BLS, ACLS, and TNCC, ensuring the highest standard of care in critical situations. A valued member of the Aquarius Performance & Wellness team for two years, MaryKate is passionate about providing high-quality IV therapy and wellness treatments.

Outside of work, she finds joy in simple pleasures—gardening, hiking, and beach days. She also loves crocheting baby blankets, collecting sea glass, and getting lost in a good book.

Melissa, MSN, RN

Occupational Health Nurse | Critical Care & Education Specialist

Bringing 28 years of nursing experience, Melissa Carmody has dedicated her career to critical care, education, and management. She holds a Master’s in Nursing and currently specializes in Occupational Health, ensuring workplace wellness and safety. Since joining Aquarius Performance & Wellness in 2023, she has been committed to helping patients optimize their health through expert care and education.

When she’s not working, Melissa enjoys cooking, reading, and spending quality time with her family. She also loves soaking up the sunshine and embracing the outdoors whenever possible.

Alayna, MA

Medical & Office Assistant | Emergency Medicine Technician 

With a Bachelor of Science in Medical Biology and years of hands-on experience as an emergency room technician at Mercy Medical Center, Alayna Miller brings a strong foundation in patient care and administrative oversigh to Aquarius. As a dedicated medical and office assistant, she plays a vital role in supporting both the team and clients, ensuring a seamless wellness experience.

Passionate about the outdoors, Alayna spends her free time embracing nature—whether it's hiking, walking, or gardening. She also enjoys traveling to Maine to visit family, relaxing at the beach in warmer months, and experimenting with new recipes in the kitchen.

Jacintha, RN

Emergency Medicine Nurse | Mobile IV & Concierge Wellness

Jacintha DeVillier is a highly skilled nurse specializing in emergency medicine, bringing a wealth of expertise and compassionate care to Aquarius Performance & Wellness. As part of the mobile IV and concierge wellness team, she is dedicated to providing high-quality, convenient health services to patients wherever they are.

Outside of work, Jacintha loves traveling, spending time with friends and family, and unwinding in Cape Cod.

Nichole, LPN

Vascular Access Specialist | IV Therapy Expert Mobile IV & Concierge Wellness

With over 25 years of nursing experience, Nichole Hanson is a highly skilled LPN specializing in vascular access. Having worked on a dedicated Vascular Access Service team for many years, she brings expert-level precision to IV therapy and infusion treatments. Nichole has always been passionate about a natural approach to health and wellness, which is why she has been part of Aquarius Performance & Wellness since inception. She believes in empowering individuals to make informed choices about their well-being and is dedicated to helping clients restore balance and optimize their health.

In her free time, she loves escaping into a great book, hiking scenic trails, and spending quality time with her family.