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Meet Your Ibis Health Care Team

A team of chronic care specialists are at the heart of the Ibis Health Program. Meet your providers here.

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Ami O'Grady
VP Ibis Services

Ami O'Grady leads the Ibis Services Delivery team. Overseeing the care planning for Ibis Health Program, Amy works with the team of chronic care specialists who are dedicated to supporting members every day. A graduate of Rivier University, Ami boasts a robust 25-year tenure in the healthcare sector, rooted in a foundation of nursing expertise. Her journey through healthcare has been marked by a trail of successes, having held pivotal leadership positions across a spectrum of start-ups, including home healthcare and rehabilitation facilities. Passionate about crafting top-tier healthcare solutions, Ami finds joy in assembling and nurturing high-functioning teams that excel in scaling and delivering unparalleled service quality. Ami promotes a team-based approach and fosters a supportive, collaborative environment, ensuring that Ibis members receive care in the most empathetic and supportive manner possible. A long-time resident of Massachusetts, Ami cherishes spending time with her family both at home and traveling.

Karthik Ravindran, MD

Karthik Ravindran, MD, Medical Director

Karthik Ravindran, MD, oversees Ibis Health Services. As the Medical Director, Karthik works with the talented team of chronic care specialists who run the day-to-day monitoring and care coordination for Ibis Health members. With a Bachelor of Science in Biomedical Engineering, followed by medical training at the Medical College of Wisconsin and an Internal Medicine residency at Brown University, Dr. Ravindran brings a unique blend of technical expertise and medical knowledge to his practice. Karthik has over a decade of experience serving the Metrowest Boston area, working at Tufts Medical Center in Framingham. During the COVID-19 pandemic, Dr. Ravindran spearheaded telehealth initiatives and served as the Clinical Lead for the Tufts Medicine Integrated Network, addressing both clinical and population health needs with efficiency and compassion. Additionally, as the Technology Lead for the Tufts Practice, he implemented cutting-edge clinical and health information processes to enhance patient care and streamline workflows. As an associate professor at Tufts University School of Medicine, he has dedicated himself to training the next generation of healthcare professionals, receiving accolades and awards for his teaching. Dr. Ravindran is also deeply committed to the well-being of both providers and patients. He has actively participated in committees aimed at reducing physician burnout at the Tufts Medicine Integrated Network and the Massachusetts Health and Hospital Association, demonstrating his dedication to creating a healthier healthcare environment for all. In his spare time, he enjoys playing video games, traveling, working on cars and spending time with his wife, son and daughter, not necessarily in that order.

Amy Weber, VP Clinical Services

Amy Weber 
VP, Clinical Services

Amy leads the Ibis Clinical Services for the program. Amy is an Adult Nurse Practitioner focused on delivering high quality clinical care to Ibis Health Program members. Throughout her very rich nursing career, Amy has served in a variety of clinical roles in academia as well as community-based practice settings. With a strong clinical background in Geriatrics, Gastroenterology, Neurology and Sleep Medicine, with a special interest in Alzheimer’s disease and Related Dementia’s. Amy also has a background in Nursing Education, having served on faculty at the University of Kansas and Avila University Schools of Nursing. Amy completed her undergraduate studies at the Medical College of Georgia and her graduate studies at the University of Kansas School of Nursing.

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Caille Roy
Supervising Provider

Caille is a Certified Family Nurse Practitioner and Registered Nurse. Caille joined the team in 2022. She previously practiced and continues as per diem staff for a federally qualified health center in NH. Prior to starting her practice, she was one of 2 applicants chosen nationally to participate in a fellowship program for 2 years after completing her masters education. Caille enjoys working with a variety of populations and is especially interested in how one's mental health relates to their physical health. Prior to becoming a nurse practitioner Caille worked as a RN on a medical-surgical telemetry unit in an inpatient setting within the Mass General Hospital system. Caille received her bachelor of science degree from the University of New Hampshire with a degree in health management and policy focusing in public health where she graduated with honors and served as a teaching assistant for epidemiology courses. Caille then graduated with honors from the University of Massachusetts with her masters degree in Nursing where she served as the president of the graduate school of nursing organization. Caille enjoys her family, including her young son, and maintaining her own health- mind, body and soul.

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Carol Buller
Supervising Provider

Carol Buller is a Certified Family Nurse Practitioner and Gerontological Nurse Practitioner. Carol holds a Bachelor of Science – Nursing from the University of Nebraska, a Master of Science – Nursing and a Doctor of Nursing Practice from the University of Kansas. Carol has practiced in community health settings, primary care, and for the past 20 years, has focused on caring for older adults. She has been an educator at the University of Kansas School of Nursing teaching and coordinator of the Adult-Gerontology Nurse Practitioner program. Carol and her husband moved to Boston 2 years ago to be closer to their adult children and grandchildren. They live below her daughter and family. Carol is a musician, loves to walk and hike, enjoys gardening, and spending time with her three grandchildren.

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Carissa Kelly
Supervising Provider

Carissa is a Certified Nurse Practitioner in Adult Medicine, primary, acute and critical care. Carissa graduated from Villanova University with a bachelors of science in nursing in 2005, practiced as a critical care certified ICU nurse specializing in cardiology and cardio thoracic surgery and then went on to complete her Nurse Practitioner degree at Stony Brook University in 2010. She has over 17 years combined hospitalist, cardiology and internal medicine experience from NY Presbyterian Hospital , Brigham and Womens, Beth Israel Deaconess Medical Center, Steward Medical and Signature Healthcare. She has won prestigious awards for provider excellence and compassionate care. Carissa is known for promoting evidence based practice while still considering the individual needs of her patients. She’s always willing to go above and beyond to ensure that her patients receive the best possible care. In her spare time, Carissa enjoys spending her time outdoors playing with her kids and dogs.

Meet Dr. Ravindran, Medical Director for Ibis

Ibis services are covered
by Medicare Part B

If you have 2 or more chronic conditions, Medicare Part B will reimburse Ibis to help you to manage those conditions.


I’m really lucky that people are checking in with me once a month, that I have a resource of people to call if I need to,”

Mary Chamberlain,

Ibis Health Member

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