Cardiologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Chiropractor providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Dentist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Dermatologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Family Physician providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
OB-GYN providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Ophthalmologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Orthopedic Surgeon providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Pediatrician providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Physical Therapist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Podiatrist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Psychiatrist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Jason W. Sims, DO, is the Co-Owner and Medical Director at The Higher Care Clinic (Thc2) in Tulsa, Oklahoma. Specializing in Primary Care, Men’s Health, Cannabis Medicine, and IV Therapy, Dr. Sims provides high-quality holistic and alternative care for all patients adults and pediatrics, using a proactive approach.
A Doctor of Osteopathic Medicine, Dr. Sims is the first physician in Oklahoma to speak in support of medical cannabis. He has certified over 150,000 patients in three states over the span of four plus years.
Dr. Sims was the former Medical Director and Chief of Staff for Cleveland Area Hospital for over ten years prior to opening The Higher Care Clinic (Thc2) in 2018. He saw an opportunity to begin immediately helping patients decrease opiate usage, pharmaceutical usage, and addictive drugs with alternative options and medicinal cannabis.
Dr. Sims and The Higher Care Clinic (Thc2) have helped over 20,000 patients kick their opiate habits, one of his most treasured accomplishments.
Outside of caring for patients and bettering people's lives, Dr. Sims enjoys live music, flea markets and spending time with his son playing Fortnite.
Claire Roarty, PA, is a board-certified physician assistant at McClure & Associates Psychiatry in Tulsa, Oklahoma. Claire takes a holistic approach to healthcare and focuses on establishing a positive relationship with patients while offering personalized care.
Claire obtained a bachelor’s degree from Missouri Southern State University in Joplin, Missouri. She graduated with Cuma Sum Laude for the MSSU Honors Program, boasting an impressive 4.0 grade point average. Her hard work landed her an honors program scholarship.
Claire then completed a Master of Science in Physician Assistant Studies at Missouri State University in Springfield, Missouri. She was a Bitter Scholarship Award recipient for her academic efforts.
After higher education, Claire worked as a psychiatric physician assistant for the Laureate Psychiatric Hospital and Clinic and Crossroads Counseling and Consultation healthcare systems in Tulsa, Oklahoma. Claire learned essential techniques, such as crisis management and creating treatment plans for patients with psychiatric disorders like bipolar or schizophrenia.
In her day-to-day life, Claire remains passionate about her health and likes to travel. She also enjoys baking her favorite homemade cinnamon rolls.
Taylor Tope, PA-C, is a board-certified physician assistant, providing excellent care to patients at McClure & Associates Psychiatry in Tulsa, Oklahoma.
Taylor graduated with a Bachelor of Arts in religious studies from the University of Oklahoma in Norman, Oklahoma. Taylor also graduated with honors and as a National Merit Scholarship recipient. Her undergraduate studies focused on how religious beliefs may aid patients in their healthcare journey, when appropriate.
Taylor then completed a master’s degree at The University of Oklahoma in Tulsa, receiving training at the Schusterman Center, where she learned essential skills, such as chronic disease management and medication management for patients.
Following graduation, Taylor worked as a psychiatric physician assistant for the Laureate Psychiatric Hospital and Clinic in Tulsa, Oklahoma. She also worked for UK Psych and Lifestance Health, providing essential services for patients. Key qualities Taylor learned from her work experiences include effective risk management, a strong work ethic, and ensuring high quality across the clinic.
Inside the workplace, Taylor took the initiative to spearhead several projects and improve the quality of life for many patient populations. Taylor started the transgender hormone management program, providing hormone therapies for transgender patients. She also devised a protocol for Suboxone® patients to improve their healthcare.
In her free time, Taylor continues to uplift local communities and provide resources for victims of assault, those struggling with addiction, and LGBTQ individuals.
Michaelle Holbird is Board Certified Family Nurse Practitioner in Primary Care and has over 10 years experience in Women’s Health and Labor and Delivery.
She remains passionate about providing care specific to the needs of women and provides exemplary care for the entire family.
Michaelle graduated with her Associates Degree in Nursing from Rogers State University in 2014 and obtained her Bachelor’s of Science in Nursing from Oklahoma City University in 2016. She graduated with honors in 2019 from South University in Savannah GA with her Master’s of Science in Nursing degree.
She is licensed by the Oklahoma State Board of Nursing and Board Certified in Family Practice by the American Association of Nurse Practitioners.
Michaelle Holbird practices in Claremore and Tulsa, Oklahoma. She is a wife and mother of four beautiful daughters. She has a heart for mission, loves to sing and enjoys antique shopping with her husband.
Dr. Chad Keeney has been in the healthcare field for 23 years and has 2 doctorate degrees with an emphasis on Family medicine. He is board certified in Oklahoma. He has extensive experience in helping people in many diverse situations. He not only see people in the clinic setting, he provides acute care for hospitalized patients.
“One of the best features of my job is getting to know my patients and their families. As a family medicine physician, I see a wide variety of patients with their own unique set of circumstances.”
Grassroots Healthcare provides dedicated patient-centered medical services to adults and children living in and around Tulsa, Oklahoma. Led by Melita Tate, MD, our skilled medical team focuses on the unique needs of individuals and takes an integrative, collaborative approach to managing acute and chronic health issues. Using a combination of traditional and functional medicine protocols, our providers work together to uncover and treat the source of acute and chronic health issues.
Our practice specializes in primary care services, including annual physicals and preventive screenings for the whole family. Our providers also offer chronic care management for conditions like diabetes, hypothyroidism, depression, and anxiety. Additionally, we specialize in wellness services, including medically supervised weight management programs and hormone replacement therapy (HRT) to optimize overall health and well-being.
The Grassroots Healthcare office is fully equipped with the latest diagnostic technologies to ensure people have the information they need to make decisions about their health. Flexible urgent care appointments are available to accommodate unexpected injuries or sudden illnesses outside of typical business hours.
Small business owners can benefit from the corporate health services we offer. The medical team emphasizes primary care and preventive wellness services to enhance the productivity, physical health, and quality of life of owners, employees, and their families.
Our Grassroots Healthcare staff provides evidence-based treatments and resources to empower people to stay proactive about their health. Our friendly staff goes above and beyond to help people feel comfortable. Spanish-speaking providers are also available onsite to accommodate the needs of our patients.
Call Grassroots Healthcare in Tulsa, Oklahoma, today to schedule a consultation or book an appointment online.
Melita Tate, MD, is a double board-certified physician in internal medicine and pediatrics and the co-founder of Grassroots Healthcare in Tulsa, Oklahoma.
Known for her holistic approach to medicine, Dr. Tate helps patients of all ages—from infants to seniors—achieve long-term wellness by addressing the root causes of illness. She emphasizes the power of nutrition, lifestyle modifications, and functional medicine to reduce dependency on prescription medications and improve quality of life.
With extensive experience in both chronic disease management and acute care, Dr. Tate specializes in thyroid disorders, diabetes, hormone imbalances, mood disorders, women’s health, and personalized weight management. Her patient-first approach blends evidence-based care with genuine compassion, empowering individuals to take control of their health. She also brings years of urgent care experience from Tulsa’s Springer Urgent Care, where she sharpened her skills in fast-paced, high-stakes medical situations.
An Oklahoma native, Dr. Tate earned her medical degree from the University of Oklahoma College of Medicine and completed her residency in Tulsa. She is currently pursuing her third board certification in functional medicine to further elevate her integrative care model.
When she’s not seeing patients, Dr. Tate enjoys gardening, home-cooked meals with her wife, and cozy evenings with a good book. Together, they share a vibrant life with their nine children and three grandchildren.
Gloria Mewbourne, FNP-C, is a certified family nurse practitioner at Grassroots Healthcare in Tulsa, Oklahoma. She is passionate about delivering holistic, wellness-focused care to patients of all ages—from infants to older adults.
Gloria believes in treating the whole person, using a blend of lifestyle modifications, personalized supplementation, and preventive strategies to help patients thrive. Her goal is to empower individuals to take an active role in their health and discover lasting balance.
A proud Tulsa native and Owasso High School alum, Gloria earned her Bachelor of Science in Nursing with a minor in leadership from the University of Central Oklahoma. She began her nursing career in pediatric hematology/oncology at OU Children's Hospital and later provided compassionate care to adult oncology patients at Cancer Treatment Centers of America in Tulsa.
While pursuing her Master of Science in Nursing from Maryville University, Gloria also worked as an infusion nurse, gaining valuable experience in patient-centered treatment and chronic care management.
At Grassroots Healthcare, Gloria brings warmth, clinical expertise, and a deep respect for each patient's journey. She is especially drawn to holistic family medicine and the opportunity to form long-term connections with her patients.
Outside of work, Gloria enjoys life with her husband, three children, dog, and cat. She's an avid cook, a lover of suspense novels and nostalgic music, and a firm believer that her mom's homemade chocolate chip cookies are the ultimate comfort food.
Brooke Schaive, FNP-C, is a family nurse practitioner at Grassroots Healthcare in Tulsa, Oklahoma, where she provides compassionate, personalized care for patients of all ages—from newborns to seniors.
A Riverton High School graduate, Brooke earned her Bachelor of Science in Nursing from St. John’s College of Nursing in Springfield, Illinois. She spent eight years as a registered nurse before becoming nationally certified in Maternal Newborn Nursing with a focus on postpartum care.
Driven by a deep desire to empower families through education and preventative care, Brooke completed her Master of Science in Nursing at Maryville University and began practicing as a Family Nurse Practitioner. At Grassroots, she is committed to treating the root cause of health concerns, supporting whole-family wellness with a blend of evidence-based medicine and everyday practices like nutritious eating, movement, and time outdoors.
Brooke’s approach to primary care is inspired by her grandfather’s cancer journey and the belief that healing begins with empathy. She takes pride in offering family-centered healthcare that feels approachable, proactive, and rooted in trust.
Outside of the clinic, Brooke enjoys gardening, baking sourdough bread, and making memories with her husband—her high school sweetheart—and their four children. Her goal is to help every family she cares for feel seen, supported, and confident in their health journey.
