Meet our PA Ambassadors - Certified PAs Do That

Meet The PA Ambassadors

Meet the 2025-26 Cohort of PA Ambassadors

Gina Gianelli Duel

MS, PA-C, MHA

Gina Gianelli Duel MS, PA-C, MHA, is a Board Certified PA with twenty years of Neurosurgery experience.

Gina Gianelli Duel

MS, PA-C, MHA

Gina Gianelli Duel, MS, PA-C, MHA, is a Board Certified PA with twenty years of Neurosurgery experience. She specializes in minimally invasive spine surgery at the HOAG Spine Institute in Newport Beach, California, serving as a neurosurgical PA to Dr. Adam Kanter. Duel holds a Master of Science in PA Studies and a Master of Healthcare Administration. She chairs the APP Committee of the AANS/CNS Joint Section on the Disorders of the Spine and Peripheral Nerves, where she also serves as a speaker and APP Course Director for Spine Summit. Duel is also a proud mother, holds a private rotorcraft license and has held leadership roles at HOAG Hospital, contributing to onboarding, billing optimization and EMR integration projects.

Kristina Eilbacher

PA-C, MBA, MHS, AT

Kristina Eilbacher, PA-C, MBA, MHS, AT, is a Board Certified PA in Neurosurgery at Duke University Hospital.

Kristina Eilbacher

PA-C, MBA, MHS, AT

Kristina Eilbacher, PA-C, MBA, MHS, AT, is a Board Certified PA in Neurosurgery at Duke University Hospital. She also serves as the Director of Children's Services within the Center for Advanced Practice at Duke Hospital. Eilbacher enjoys caring for both pediatric and adult patients pre and post-surgery and is a passionate advocate for advanced practice providers and a dedicated mentor to students and fellow APPs.

Kristen Ettlin

MPAS, PA-C

Kristen Ettlin, MPAS, PA-C, is a Board Certified PA in cardiothoracic surgery at Harry S. Truman Memorial Veterans Hospital in Columbia, Missouri.

Kristen Ettlin

MPAS, PA-C

Kristen Ettlin, MPAS, PA-C, is a Board Certified PA in cardiothoracic surgery at Harry S. Truman Memorial Veterans Hospital in Columbia, Missouri. She actively contributes to her alma mater, Stephens College PA Program, by assisting with prospective student interviews, clinical skills assessments, simulated patient encounters, and serving as a clinical preceptor. Ettlin has also volunteered with NCCPA as a content expert in the development of the PANRE and PANRE-LA exams.

Dalton Gifford

DMSc, PA-C, CPAAPA,

Dalton Gifford, DMSc, PA-C, CPAAPA, is a Board Certified PA in critical care at the U.S. Department of Veterans Affairs.

Dalton Gifford

DMSc, PA-C, CPAAPA,

Dalton Gifford, DMSc, PA-C, CPAAPA, is a Board Certified PA in critical care at the U.S. Department of Veterans Affairs. Gifford graduated from the University of Kentucky PA program in 2020, completed a postgraduate critical care medicine residency in 2021 at University of Kentucky HealthCare, and earned his DMSc from the University of Lynchburg in 2022. He is passionate about PA advocacy and education, serving as Vice-President and membership committee chair for the Kentucky Academy of PAs. Gifford also holds a voluntary adjunct assistant professorship for the University of Kentucky PA program.

Danielle Harfoot

MS, PA-C

Danielle Harfoot, MS, PA-C, is a Board Certified PA in oncology at Karmanos Cancer Center in Detroit, Michigan, specializing in Phase 1 clinical trials.

Danielle Harfoot

MS, PA-C

Danielle Harfoot, MS, PA-C, is a Board Certified PA in oncology at Karmanos Cancer Center in Detroit, Michigan, specializing in Phase 1 clinical trials. With almost 25 years in oncology, she's witnessed tremendous advances in both curative and palliative settings. Harfoot is passionate about mentoring pre-PA students, serves as a preceptor for several PA programs, and contributes as an item writer for PANCE, PANRE, and PANRE-LA exams. She is honored to be a provider, teacher, and supporter, and looks forward to sharing her appreciation for the PA profession.

Rachel Hari-Singh

MHS, PA-C

Rachel Hari-Singh, MHS, PA-C, is a new grad, Board Certified PA in dermatology at Schweiger Dermatology.

Rachel Hari-Singh

MHS, PA-C

Rachel Hari-Singh, MHS, PA-C, is a new grad, Board Certified PA in dermatology at Schweiger Dermatology. She's passionate about providing inclusive, patient-centered care, with a special interest in skin of color, hair loss and aesthetics. Hari-Singh is an Emerging Scholar with the Society of Dermatology PAs, and is dedicated to mentoring aspiring PAs and supporting pre-PA students on their journey.

Marcy Holloway

PA-C

Marcy Holloway, PA-C, is a Board Certified PA at Southwest Medical, part of Optum Care in Las Vegas, Nevada.

Marcy Holloway

PA-C

Marcy Holloway, PA-C, is a Board Certified PA at Southwest Medical, part of Optum Care in Las Vegas, Nevada. She works within the Optum Community Care Center, focusing on the needs of the senior population. Holloway also serves as a team leader, mentoring and advocating for fellow advanced practice clinicians, with a passion for training and educating those new to the health care team.

Michelle Igori

MHS, PA-C

Michelle Igori, MHS, PA-C, is a Board Certified PA with a versatile background in urgent care, telemedicine and aesthetics.

Michelle Igori

MHS, PA-C

Michelle Igori,MHS, PA-C, is a Board Certified PA with a versatile background in urgent care, telemedicine and aesthetics. She delivers evidence-based care with a strong focus on accessibility and patient-centered outcomes in both remote and in-person settings. Igori is certified in neurotoxin and dermal filler administration. Passionate about advancing the PA profession, she actively mentors pre-PA and PA students and recently relocated to Dallas, Texas to continue expanding her clinical and leadership footprint.

RaKetra Knight

MS, PA-C

RaKetra Knight, MS, PA-C, serves as a Board Certified PA in pediatrics at South Atlanta Pediatrics.

RaKetra Knight

MS, PA-C

RaKetra Knight, MS, PA-C, serves as a Board Certified PA in pediatrics at South Atlanta Pediatrics. She is a 2021 graduate of Morehouse School of Medicine (MSM), where she earned her Master of Science in PA Studies. Knight's academic background includes degrees from Clark Atlanta University and Drexel University. A published author on topics related to diversity in clinical trials, she is also a member of various professional organizations, such as the Society for PAs in Pediatrics and the Atlanta Medical Association.

Stacy W. Li

PA-C, CAQ-Derm

Stacy W. Li, PA-C, CAQ-Derm, is a Board Certified PA practicing in dermatology with 13 years of experience in medical, surgical and cosmetic dermatology.

Stacy W. Li

PA-C, CAQ-Derm

is a Board Certified PA practicing in dermatology with 13 years of experience in medical, surgical and cosmetic dermatology. She leads the APP team at Metro Dermatology of NY and NJ and founded the MA Internship Program, designed to provide pre-health students with meaningful clinical exposure and mentorship. Committed to cultivating the next generation of health care providers, Li also serves as a clinical coordinator and preceptor for PA programs at Weill Cornell, St. John's, Pace and Long Island University.

Sarah Maddux

MSM, PA-C

Sarah Maddux, MSM, PA-C, is an assistant professor at Idaho State University and a Board Certified PA practicing in neurosurgery with the St. Luke's Health System.

Sarah Maddux

MSM, PA-C

Sarah Maddux, MSM, PA-C, is an assistant professor at Idaho State University and a Board Certified PA practicing in neurosurgery with the St. Luke's Health System. She is passionate about clear, effective communication with patients, students and colleagues, and finds great fulfillment in mentoring both current and prospective PA students. Maddux also contributes to the profession as an NCCPA item writer and genuinely enjoys crafting well-designed multiple-choice exam questions. She serves as a faculty advisor for ISU's PASS program and is an active member of the Continuing Medical Education Committee for the Idaho Academy of PAs.

Krystal Martin

PT, DPT, MPAS, PA-C

Krystal Martin, PT, DPT, MPAS, PA-C, is a dedicated Board Certified PA specializing in outpatient Physical Medicine & Rehabilitation (PM&R) at Michigan Medicine.

Krystal Martin

PT, DPT, MPAS, PA-C

Krystal Martin, PT, DPT, MPAS, PA-C, is a dedicated Board Certified PA specializing in outpatient Physical Medicine & Rehabilitation (PM&R) at Michigan Medicine. With a unique dual background as a licensed Physical Therapist and Physician Associate, she offers a comprehensive, whole-person approach to care. Martin treats complex conditions including Post-Acute Sequelae of Covid-19 (PASC), traumatic brain injury, chronic migraines and autonomic dysfunction. She is passionate about helping patients optimize their quality of life and provides advanced treatments tailored to individual needs. Beyond the clinic, Martin serves as Adjunct Faculty and Advisor in the Physical Therapist Assistant (PTA) Program at Wayne County Community College District, mentoring future health care professionals. She is an active member of MAPA, AAPA, MPTA, and APTA, and deeply committed to community service with Habitat for Humanity and Delta Sigma Theta Sorority, Incorporated.

Natalia Rangel

DMS, PA-C

Natalia Rangel, DMS, PA-C, is Board Certified PA practicing in neurosurgery in Tucson, Arizona.

Natalia Rangel

DMS, PA-C

Natalia Rangel, DMS, PA-C, is Board Certified PA practicing in neurosurgery in Tucson, Arizona. Originally from Cúcuta, Colombia, Rangel's medical path has been shaped by her experiences as a U.S. immigrant and her commitment to bridging cultural and language gaps in health care. She is actively involved in advocacy and mentorship through Physician Associates for Latino Health (PALH), serving as Director at Large for PR & Membership, overseeing social media and co-chairing the Scholarship Committee. Rangel also enjoys participating in global health efforts, previously taking part in a surgical mission in Honduras. Outside of medicine, she loves traveling, spending time in nature and exploring Tucson's vibrant culture and art scene.

Erika Rucker

MPAS, PA-C

Erika Rucker, MPAS, PA-C, is a Board Certified PA specializing in Gynecologic Oncology at MD Anderson.

Erika Rucker

MPAS, PA-C

Erika Rucker, MPAS, PA-C, is a Board Certified PA specializing in Gynecologic Oncology at MD Anderson. She is deeply passionate about PA education and dedicated to lifelong learning. Rucker serves as a GYN ONC PA Fellowship Advisor at MD Anderson, a mentor for the Aspiring PA Program, and a preceptor for PA students. She is committed to supporting the next generation of health care providers through guidance, mentorship and hands-on clinical training.

Carlos Sian

PA-C, MPH

Carlos Sian, PA-C, MPH, is a Board Certified PA in family medicine and National Health Service Corps (NHSC) scholar at the Infant Welfare Society, an FQHC in Chicago, Illinois.

Carlos Sian

PA-C, MPH

Carlos Sian, PA-C, MPH, is a Board Certified PA in family medicine and National Health Service Corps (NHSC) scholar at the Infant Welfare Society, an FQHC in Chicago, Illinois. He is passionate about leadership, mentorship and advancing public health. Sian is an active member of Physician Associates for Latino Health (PALH), serving on the scholarship committee where he reviews applications and selects merit-based award recipients. He also mentors pre-PA students, many from the communities he serves, and volunteers as an alumni interviewer for the Northwestern University Feinberg School of Medicine PA Program.

Michael Sulewski

MMSc, PA-C

Michael Sulewski, MMSc, PA-C, is a Board Certified PA who practices in primary care at Avance Care in Charlotte, North Carolina.

Michael Sulewski

MMSc, PA-C

Michael Sulewski, MMSc, PA-C, is a Board Certified PA who practices in primary care at Avance Care in Charlotte, North Carolina. With a passion for teaching and mentoring PA students, he also serves as a principal faculty at the Wingate University PA Program in Wingate, NC. PA Sulewski considers it a great privilege to continue caring for patients while educating those who will soon join the PA profession.

Alyssa Woodbury

PA-C, MS

Alyssa Woodbury, PA-C, MS, is a Board Certified PA who has primarily practiced in Orthopedic Surgery since graduating from Rosalind Franklin University of Medicine and Science in 2013.

Alyssa Woodbury

PA-C, MS

Alyssa Woodbury, PA-C, MS, is a Board Certified PA who has primarily practiced in Orthopedic Surgery since graduating from Rosalind Franklin University of Medicine and Science in 2013. Her passion for medicine began in high school while volunteering at a free clinic. She has lived and worked across the country in various permanent and locum tenens positions, including Michigan, Oregon, Wisconsin, South Carolina, New Hampshire and Idaho. She is passionate about mentoring and training pre-PA students, PA students and PAs, having personally mentored over 200 pre-PA students and precepted four PA students on clinical rotations.

2024-25 Alumni Cohort of PA Ambassadors

Aaron P. Henry

MSHS, PA-C

Janet Rippel

MPAS, PA-C

Jordan Hood

M.S., PA-C

Christa Nelson

PA-C

Cassi Rockwell

PA-C

Fedna Morency

MS, PA-C

Jasmine Cofield

MS, PA-C

Sara Evans

PA-C

Ted Parker

MCHS, PA-C

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Meet the 2025-26 Cohort of PA Ambassadors

Gina Gianelli Duel

Kristina Eilbacher

Kristen Ettlin

Dalton Gifford

Danielle Harfoot

Rachel Hari-Singh

Marcy Holloway

Michelle Igori

RaKetra Knight

Stacy W. Li

Sarah Maddux

Krystal Martin

Natalia Rangel

Erika Rucker

Carlos Sian

Michael Sulewski

Alyssa Woodbury

2024-25 Alumni Cohort of PA Ambassadors

Aaron P. Henry

Janet Rippel

Jordan Hood

Christa Nelson

Cassi Rockwell

Fedna Morency

Jasmine Cofield

Sara Evans

Ted Parker

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