Meet Our Team

As professionals, advocates, and community members, we care deeply about young people’s health and safety and the systems that shape their access to sexual health information and resources.

The Amplify Team

The team behind Amplify Youth Health Collective is rooted in the Tulsa community and committed to the young people and families we work alongside every day.
Alexandra Ledezma
Program Manager
She/Ella
Alicia Williams, MSW
Strong Tomorrows Program Manager
She/Her
Braylea Lee
Strong Tomorrows Site Coordinator
She/Her
Brittany Banh
Youth Leadership Council Coordinator
She/Her
Brittany Johnson
Strong Tomorrows Lead Coordinator
She/Her
Cristine Segui-Harris
Operations & Administrative Manager
She/Ella
Donna Willis
Grants Manager
She/Her
Dr. Crystal J. Carter
Deputy Director
She/Her
Heather Duvall, MA
Executive Director
She/Her
Jennifer Briggs, LMSW
Director of Learning & Impact
She/Her
Jessica Walton
Strong Tomorrows Site Coordinator
She/Her
Karen Cordero
Strong Tomorrows Site Coordinator
She/Her
Lindsey Cain
Public Health Initiatives Manager
Lyric Manns
Strong Tomorrows Site Coordinator
She/Her
Maddie Miner
Communications & Marketing Manager
She/Her
McKenna Reeves
Tulsa Service Year Fellow - Capacity Builder
They/She
Samantha Higgs, MS
Capacity & Outreach Manager
She/Her
Sierra Carter, CHES
Training Manager
She/Her
Tangela Johnson
Strong Tomorrows Lead Coordinator
She/Her
Taylor Hill
Strong Tomorrows Site Coordinator
She/Her
Tomas “Tammy” Delocéano
Training & Outreach Coordinator
Any Respectful Pronouns

The Amplify Board

Dr. Grant Cox, M.D.
Past Board Chair
He/Him/His
Lise Blevins-Inman
Board Member
She/Her/Hers
Dr. Lauren Conway, D.O.
Board Member
She/Her/Hers
Draper Sturdivant
Board Member
He/Him/His
Dr. John Studebaker, Jr., M.D.
Board Vice Chair
He/Him/His
Braden Glasgow
Board Secretary
He/Him/His
Lynley Fox
Board Treasurer
She/Her/Hers
Omare Jimmerson
Board Chair
She/Her/Hers

Join Our Team

Amplify is a collaborative, affirming, and mission-driven team dedicated to advancing youth sexual health and well-being across Tulsa. We look for candidates who care about young people, are committed to improving sexual health outcomes in our community, and share our mission and values.

Explore Opportunities
Alexandra Ledezma
Program Manager

Alexandra Ledezma is the Program Manager at Amplify, where she leads the Youth Leadership Council and Latine and Hispanic Initiatives teams that implement youth leadership and culturally responsive programming. Alex was born and raised in Las Vegas and earned a Bachelor of Science from the University of Nevada, Las Vegas before calling Tulsa home in 2017. She is a proud Teach For America alum and spent five years teaching at Felicitas Mendez International School, a bilingual program rooted in equity and honoring students’ home languages while supporting language development and connection to family and culture. Before her current role, Alex served as the Latine and Hispanic Initiatives Coordinator, where she expanded access to sexual health resources, programming, and education for Spanish speaking families in Tulsa. She is passionate about bilingual education, youth leadership, and uplifting the Latine community. Outside of work, Alex enjoys attending community events, exploring Tulsa restaurants, and teaching dance fitness classes.

Alicia Williams, MSW
Strong Tomorrows Program Manager

Alicia Williams is the Strong Tomorrows Program Manager at Amplify, where she leads the Strong Tomorrows program and team, which provided support to expecting and parenting students in Tulsa schools. Alicia was born in Anchorage, Alaska and moved to Tulsa at age six, where she proudly grew up in the Tulsa Public Schools community and graduated from Booker T. Washington High School. She earned a Bachelor of Social Work from Northeastern State University and a Master of Social Work from the University of Oklahoma. Before her current role, Alicia worked with the Juvenile Bureau and DaySpring, and also served in roles with the University of Oklahoma, including Clinics in Schools and as a social worker at the Wayman Tisdale Clinic. Across these roles, she has worked in youth, health, and community service settings where she has served as a role model, advocate, and trusted adult for young people. She is committed to teaching, encouraging, and motivating the next generation to achieve their goals. She is a member of the Alpha Chi Omega Chapter of Alpha Kappa Alpha Sorority and outside of work, she enjoys spending time with her two daughters, reading, doing arts and crafts, and listening to music.

Braylea Lee
Strong Tomorrows Site Coordinator

Braylea Lee is a Strong Tomorrows Site Coordinator at Amplify, where she provides support to expecting and parenting students in Tulsa schools. Braylea was born and raised in Tulsa, Oklahoma and earned a Bachelor’s degree in Community Health from Northeastern State University, and is currently pursuing a Master of Social Work degree. Before her current role, she worked at the Mental Health Association of Oklahoma, where she supported youth mental health programming and promoted youth voice. She brings experience in youth advocacy and supports students as they navigate pregnancy and parenting, including child development, parenting skills, career readiness, and high school completion. As a Site Coordinator, she values the opportunity to walk alongside students as they navigate parenthood. Outside of work, Braylea enjoys reading and painting.

Brittany Banh
Youth Leadership Council Coordinator

Brittany Banh is the Youth Leadership Council Coordinator at Amplify, where she coordinates the Youth Leadership Council (YLC), a paid leadership program for teens ages 14-19 interested in learning about sexual health and growing as youth leaders in Tulsa. Brittany was born in California and raised in Bartlesville, Oklahoma, and she earned a Bachelor’s degree in Psychology and Women’s and Gender Studies from the University of Tulsa. During her time at TU, Brittany advanced peer-to-peer educational programming focused on sexual violence prevention and bystander intervention, and conducted research on maternal health and mother-infant bonding. She previously worked in the nonprofit sector as an intern with Domestic Violence Intervention Services and as a fellow at the Oklahoma Center for Community and Justice. Brittany is dedicated to advocating for the expansion of holistic sexual health education as a means of preventing negative health outcomes and sexual violence. Outside of work, Brittany enjoys concerts, cooking, and working out.

Brittany Johnson
Strong Tomorrows Lead Coordinator

Brittany Johnson is a Strong Tomorrows Lead Coordinator at Amplify, where she supports and leads the Strong Tomorrows team while providing case management to expecting and parenting students in Tulsa-area schools. Brittany was born and raised in Tulsa, Oklahoma and graduated from Union High School before earning a Bachelor of Arts from the University of Oklahoma. She has a background in education, including work as a preschool teacher and para educator supporting children with disabilities. She also brings experience in client advocacy and case management from her work with the Oklahoma Department of Human Services in Child Welfare. She sees the perseverance and resilience in young people who have faced challenges and does this work to support and empower them. Outside of work, Brittany enjoys spending time with her three children and chocolate labs, cheering on OU football, reading, traveling, and spending time with family and friends.

Cristine Segui-Harris
Operations & Administrative Manager

Cristine Segui-Harris is the Operations & Administrative Manager at Amplify, where she leads organizational operations, administrative, and logistics systems that support Amplify’s work. Cristine was born in Midwest City, Oklahoma and, as part of a military family, spent her childhood in multiple places across the country before graduating from Yukon High School. She earned an Associate degree in Liberal Arts from Tulsa Community College and a Bachelor’s degree from Oklahoma State University. She joined Amplify in July 2022 as the Operations & Administrative Coordinator and was promoted to manager in August 2024. Before joining Amplify, she worked with Bee’s Knees, a collaborative group between Youth & Family Services and AutismOklahoma, and spent many years working in bookstores including Borders, Barnes & Noble, and Magic City Books. She is passionate about supporting children and families and building strong behind the scenes systems that help organizations function effectively. She believes access to information and resources is vital to making communities safer, happier, better, and more loving places. Outside of work, Cristine enjoys her little family, their dogs, and two guinea pigs, as well as naps, reading, podcasts, karaoke, board games, and bird watching.

Donna Willis
Grants Manager

Donna Willis is the Grants Manager at Amplify, where she writes and reports on grants and keeps the organization accountable to funder requirements. Donna earned a Bachelor’s degree in Psychology and has a varied background, including running a home business as a medical transcriptionist, training as a horticultural therapist, freelance editing, and serving as office manager for the Zarrow Center for Learning Enrichment at the University of Oklahoma. She brings experience writing and administering a wide range of federal, state, and agency grants, and previously served on a research team that developed the Transition Assessment and Goal Generator. She is passionate about expanding access to sexual health and healthy relationship education, which she believes is essential to living a healthy life and building fulfilling connections with family, friends, and community. Outside of work, Donna enjoys spending time with her three grandchildren, gardening, and crystal digging.

Dr. Crystal J. Carter
Deputy Director

Dr. Crystal J. Carter is the Deputy Director at Amplify, where she leads the organization’s operations, overseeing its internal systems, processes, and human resources. Crystal was born and raised in Tulsa and graduated from Booker T. Washington High School. She earned a Bachelor of Arts from the University of Tulsa and a Master of Human Relations in Organizational Development from the University of Oklahoma. She recently completed her PhD in Social Foundations of Education at Oklahoma State University, where she received the Distinguished Graduate Fellowship. Before joining Amplify, Crystal spent more than 20 years in nonprofit leadership and classroom education, where she led teams, worked with students, and strengthened school communities. She is an author and digital content creator. She does this work to help build a better Tulsa for future generations and, as a Tulsa native and mother, has a vested interest in the health of the city and state. Outside of work, Crystal enjoys creative projects, live music, and spending time with family and friends, especially her daughter, Zoe.

Heather Duvall, MA
Executive Director

Heather Duvall is the Executive Director at Amplify, where she oversees the entire organization, setting strategic direction and leading its programs, operations, and staff. Heather was born and raised in rural Oklahoma and earned a Bachelor’s degree from Oklahoma State University and a Master’s degree in Communication from the University of Oklahoma. Early in her career, she held leadership roles at CAP Tulsa and the Oklahoma Institute for Child Advocacy and taught at the University of Central Oklahoma. She then joined Amplify, then known as Tulsa Campaign to Prevent Teen Pregnancy, serving as Director of Programs from 2013 to 2018, helping establish sex education in Tulsa Public Schools. She went on to serve as statewide Director of Programs for the Oklahoma Chapter of the Alzheimer’s Association before returning to lead Amplify as Executive Director in November 2020. Today, she is a respected leader in Oklahoma’s nonprofit sector and a recognized voice nationally in adolescent sexual health. For more than 20 years, she has advocated for educational opportunities and brought diverse groups together around a shared vision for young people’s wellbeing. Outside of work, Heather enjoys reading, appreciating nature, and spending time with friends and family.

Jennifer Briggs, LMSW
Director of Learning & Impact

Jennifer Briggs is the Director of Learning and Impact at Amplify, where she oversees programming, guiding the organization’s strategy for training, program development, evaluation, and the direct service initiatives that support youth across Tulsa. Jenny is a lifelong Tulsan who grew up without access to high quality sex education, teen clinics, or support for parenting teens, and saw firsthand how that gap made growing up harder for herself and her peers. She graduated from Memorial High School before earning a Bachelor of Arts in English from Oklahoma State University and a Master of Social Work from the University of Oklahoma, and is a Licensed Master Social Worker. Before her current role, Jenny taught sex education through the Carrera Program at Union Public Schools and completed social work practicum placements with Tulsa CARES, Youth Services of Tulsa, and the Tulsa County Juvenile Bureau. With more than 15 years of experience at the intersection of public health, youth development, and community-based social work, she brings a strengths-based, systems-oriented approach to supporting program staff and partners. Outside of work, Jenny enjoys gardening, reading, and spending time outside with the people she loves.

Jessica Walton
Strong Tomorrows Site Coordinator

Jessica Walton is a Strong Tomorrows Site Coordinator at Amplify, where she provides support and resources for expecting and parenting students in Tulsa schools. With more than 15 years of experience working with children, youth, and families, she has devoted her career to empowering others through advocacy, education, mentorship, and resource connection. Known for being approachable, competent, and results-driven, Jessica combines empathy with action. She believes that people thrive when they feel seen, heard, and supported, and she strives to create spaces where young people can grow in confidence and achieve success. Whether she is encouraging a teen parent, supporting a friend, celebrating family milestones, or guiding others through challenges, she leads with authenticity, resilience, and heart. Outside of work, Jessica values family, laughter, personal growth, and creating lasting memories with those she loves.

Karen Cordero
Strong Tomorrows Site Coordinator

Karen Cordero is a Strong Tomorrows Coordinator at Amplify, where she supports expecting and parenting students in Tulsa schools. Before joining Amplify, Karen brought extensive experience supporting children, youth, and families in the Tulsa area through education, mental health, and community-based programs, with a background in family advocacy, bilingual support, and case management focused on connecting families to resources and helping them navigate systems. She earned a Bachelor’s degree in University Studies with a minor in Sociology and is currently pursuing her Master of Social Work. Karen hopes to empower student parents to become the best parents they want to be through meaningful connection and advocacy, and she believes deeply in building trust with the families she serves. As the daughter of immigrant parents, she carries values of resilience, humility, and service into her work. Outside of work, Karen is a proud soccer mom who enjoys traveling with her husband and son and dancing.

Lindsey Cain
Public Health Initiatives Manager

Lindsey Cain is the Public Health Initiatives Manager at Amplify, leading programming that addresses sexually transmitted infections (STIs) and the connection between public health and sexual health. Lindsey brings more than 15 years of experience at the intersection of positive youth development, sexuality education, health equity, and organizational equity, with experience spanning educational, clinical, nonprofit, and youth residential settings. Concurrent with her role, Lindsey also serves as an online health and psychology adjunct instructor.

Lyric Manns
Strong Tomorrows Site Coordinator

Lyric Manns is a Strong Tomorrows Site Coordinator at Amplify, where she supports expecting and parenting students by connecting them with educational, social, and community resources that promote academic success and family wellbeing. Lyric earned a Bachelor of Science in Community and Public Health with a minor in Spanish Language Studies from the University of Central Oklahoma. She brings several years of experience supporting youth and families through public health, community engagement, and case management roles, including managing HIV prevention programs, leading community outreach initiatives, and facilitating youth leadership and health education programs. In her role, she provides individualized case management, coordinates services with school and community partners, and advocates for youth as they prepare for graduation, grounding her work in trauma-informed, culturally responsive practices. Lyric is motivated by building trusting relationships that empower people to feel supported and confident in creating pathways to brighter futures. Outside of work, she enjoys gardening, nature walks, traveling, painting, and spending time with loved ones.

Maddie Miner
Communications & Marketing Manager

Maddie Miner is the Communications & Marketing Manager at Amplify, where she leverages her background in community-based healthcare to share health-related information with the public. Maddie is originally from mid-Missouri and relocated to Oklahoma in 2017 after meeting her wife. She earned a Bachelor’s degree in Multimedia Studies with a minor in Humanities from Northeastern State University in 2020 and joined Amplify in August 2024. Her work focuses on celebrating diversity, amplifying youth voices, and ensuring essential information is accessible to Oklahomans and beyond, because she believes accessible, accurate information is one of the most powerful tools a community can have. Maddie is passionate about making sure people have the resources they need to make informed decisions about their health. Outside of work, she enjoys exploring Tulsa, traveling, discovering new coffee spots, and spending time with her three legged dog, Bubby.

McKenna Reeves
Tulsa Service Year Fellow - Capacity Builder

McKenna Reeves is the Tulsa Service Year Fellow and Capacity Builder at Amplify, where they support the delivery of evidence-based trainings and parent advocacy efforts in sex education. Before joining Amplify, McKenna served as a team lead for the SCALE Project at Bard College, where they focused on creating resources and institutional changes to support low income and first generation students. They also worked as a peer educator, a peer tutor with the Bard Prison Initiative, and a summer program manager at a Girl Scout camp. McKenna earned a Bachelor’s degree in Biology with a concentration in Global Public Health, a minor in Chemistry, and a certificate in Civic Engagement from Bard College. They believe all people should have equal access to education, and that belief grounds their work at Amplify. Outside of work, McKenna enjoys being outside, whether playing sports, reading in the sun, or going for nature walks.

Samantha Higgs, MS
Capacity & Outreach Manager

Samantha Higgs is the Capacity and Outreach Manager at Amplify, where she builds and maintains partnerships that expand sex education across schools and community organizations in the Tulsa area. Samantha earned a Bachelor’s degree in Human Development and Family Science from Oklahoma State University in 2014 and a Master’s degree in the same field in 2017. She joined Amplify in November 2020 as the Capacity and Outreach Coordinator after working as a Health Education Specialist at Youth Services of Tulsa, where she provided sexual health education and helped young people connect with clinics for their care. She has also worked alongside individuals with disabilities and mental illness, and has served as secretary of the Tulsa Health and Education Coalition since 2018. In 2018, she received the Rising Star Award from Oklahoma State University’s College of Human Sciences. Samantha believes young people deserve the right to know about their bodies and make fully informed decisions about their future. Outside of work, she enjoys spending time with family, reading, running, and grabbing a dirty chai at her favorite Tulsa coffee shops.

Sierra Carter, CHES
Training Manager

Sierra Carter is the Training Manager at Amplify, where she delivers evidence-based trainings and workshops for professionals across sectors who support young people. Sierra earned a Bachelor of Science in Health Promotion from Oklahoma State University and maintains her credentials as a Certified Health Education Specialist. Before joining Amplify in June 2023, she spent nearly 12 years as an Adolescent Sexual Health Educator with the Tulsa Health Department’s PREP program, where she implemented sex education programs across Tulsa County school districts and youth serving organizations. She continues to serve as a nationally certified trainer for evidence-based intervention programs, facilitating best practices in sex education and positive youth development. What fuels Sierra’s passion for adolescent health is the incredible people she shares this work with, all collectively empowering young people to become their own best advocates. Outside of work, Sierra is proud to be the best mommy to her two daughters, enjoys catching up on her favorite shows, and regularly attends group fitness classes at the Y.

Tangela Johnson
Strong Tomorrows Lead Coordinator

Tangela Johnson is a Strong Tomorrows Lead Coordinator at Amplify, where she helps lead the Strong Tomorrows team in providing support and resources for expecting and parenting students in Tulsa schools. Tangela is a Tulsa native and graduated from Memorial High School before earning a Bachelor of Science in Health Administration from Langston University. She has a background in program administration, including her time with the Community Service Council’s Healthy Start Program, where she focused on maternal and child health. She also brings years of nonprofit experience supporting families and children in the Tulsa community before joining Amplify. She enjoys watching young parents and their children thrive while receiving Strong Tomorrow’s support, and she does this work to help students become the best parents they can be for their children. Tangela is a proud mother to a loving little girl, and outside of work, she enjoys listening to music, spending time with her daughter, and watching documentaries.

Taylor Hill
Strong Tomorrows Site Coordinator

Taylor Hill is a Strong Tomorrows Coordinator at Amplify, where she works on youth development, college and career readiness, and family and community engagement. Before joining Amplify, Taylor spent more than 13 years in roles spanning K-12 education, higher education, and community-based programming throughout the Tulsa area, developing workshops, mentoring high school students, building community partnerships, and coordinating programs that empower youth and strengthen family engagement. She earned a Bachelor’s degree in Management Human Resources from the University of Tulsa and a Master’s degree in Educational Leadership from Southeastern Oklahoma State University, and is currently pursuing a Doctorate of Education in Educational Administration at Oklahoma State University, with anticipated graduation in 2028. Taylor is committed to culturally responsive programming and building partnerships that support student success and postsecondary access. She hopes to empower youth, families, and communities through meaningful relationships and opportunities that inspire confidence and leadership. Outside of work, Taylor enjoys coloring, watching sports, and spending time with her tribe.

Tomas “Tammy” Delocéano
Training & Outreach Coordinator

Tomas “Tammy” Delocéano is the Training & Outreach Coordinator at Amplify, where they focus on building skills to engage and uplift youth. Tammy is a charismatic, neurodivergent Latinx artist and youth advocate who joined Amplify in 2020. For over a decade, they have collaborated with young people to co-create award winning, nationally recognized programs, including body-positive fashion clubs, empowerment spaces, summer camps, and Amplify’s Youth Leadership Council. Tammy is certified to implement more than 15 evidence-based and evidence-informed curricula related to adolescent health and wellness. Drawing on their art background and what they call a Human Relations degree from the School of Life, Tammy champions the power of representation and youth voice, infusing their activism and trainings with creativity, compassion, and a drive to dismantle adultism and body negativity. Outside of work, Tammy loves expressing themself through photography, humor, and dance, is learning to vogue with the ballroom scene, and is a big fan of the Simpsons, Shakira, and their cat, Lumpy.

Dr. Grant Cox, M.D.
Past Board Chair

OB/GYN and Founder, OB/GYN Specialists of Tulsa

Lise Blevins-Inman
Board Member

President, Berrywood Group Inc.

Dr. Lauren Conway, D.O.
Board Member

Child Abuse Pediatrician, OU Health

Draper Sturdivant
Board Member

Go to Market Lead, Forum Ventures

Dr. John Studebaker, Jr., M.D.
Board Vice Chair

Healthcare Data Consultant, Factotum Health

Braden Glasgow
Board Secretary

Senior Tax Accountant, Ernst & Young

Lynley Fox
Board Treasurer

Senior Manager, Ernst & Young

Omare Jimmerson
Board Chair

Executive Director, Oklahoma Birth Equity Initiative

Team & Board