Meet Our Team

Dr. Donigan graduated with a BS from Marquette University, Milwaukee, Wisconsin, in 1979. He then entered the dental program at the University of Illinois, Chicago, Illinois, graduating in 1983. That same year he purchased a private practice in Osage City, Kansas practicing dentistry there until 2007.

In 1998 Dr. Donigan became the Dental Director at the Martin de Porres Dental Clinic in Topeka, Kansas, while also operating his own dental practice. He oversaw the expansion of services and the hiring of staff. After stabilizing that clinic, he then went on to direct the expansion of the dental clinic at Flint Hills Community Health Center in Emporia, Kansas in 2002. While working at these clinics, his desire grew to further his public health education, and in doing so, completed his MPH in 2007 at the University of Kansas Medical Center, Kansas City, Kansas.

Also, in 2007, he and his family made a decision to move to North Carolina after being hired as Dental Director at Gaston Family Health Services in Gastonia, North Carolina. This is where he continues to see patients and oversee a staff of seventeen dentists and ninety other staff members. In 2010 Dr. Donigan was named NNOHA’s Clinician of the Year and also named Gaston County's “Public Health Hero”. In 2013 he was nominated for Fellowship in the International College of Dentistry. Dr. Donigan has served as Kansas Dental Association PAC chairman, Flint Hills District Dental Society President and as, North Carolina’s First District President, and as a Trustee for the NCDS. And in 2016 was named “Outstanding Provider of the Year” by the North Carolina Community Health Center Association, the first dentist so named. In 2021, he was awarded the john McFarland Outstanding Leadership Award winner. Dr. Donigan is passionate about Public Health Dentistry and creating collaboration with other organizations that support “unified dental care for all”.

Dr. Cornille is a graduate of the University of Missouri- Kansas City School of Dentistry. She completed an Advanced Education in General Dentistry residency in Kansas City following dental school. Her entire career has been dedicated to serving the underserved in community health clinic settings. In 2010 Dr. Cornille joined Vista Community Clinic with locations in San Diego, Riverside, and Orange County, CA, and serves as the Chief Dental Officer.

Dr. Cornille joined the VCC team because she really enjoys being part of something larger than herself. As a dentist at VCC, Dr. Cornille educates patients on their dental health in addition to providing multi-disciplinary care under one roof with other medical providers through preventive healthcare initiatives, such as the promotion of HPV and Flu vaccines and Fit and Pap testing. In 2016, Dr. Cornille received the Live Well San Diego Public Health Champion Individual Award. She’s been recognized as a Top 40 under 40 Dentist by Incisal Edge Magazine, and recently served as a panelist for building dynamic teams. She’s a member of the National Network of Oral Health Access. Dr. Cornille also has a wide range of teaching, writing, and speaking experience and is dedicated to working through and providing the appropriate care for patients during the COVID-19 pandemic.

Program Director, Northwest Dental Residency

Specialties: Dental

Degree: Doctor of Dental Surgery, Indiana University School of Dentistry, Indianapolis, Indiana

Dr. Mark Koday has a three-decade career under his belt at Yakima Valley Farm Workers Clinic. With those years, he brings many accomplishments and his perspective on the world of migrant health care today.

Dr. Koday graduated from Indiana University School of Dentistry in 1978 and started as a Commissioned Officer with the U.S. Public Health Service. Dr. Koday was placed with Yakima Valley Farm Workers Clinic in Toppenish in 1986 as the organization’s dental director, and has been with the organization since. Koday recently retired from the Chief Dental Officer’s role, but remains director of the Northwest Dental Residency Program.

Among his accolades includes the Lifetime Achievement Award in Migrant Health from the National Association of Community Health Centers in 2017. He has served on the Washington State Dental Quality Assurance Commission, the American Dental Association’s Council on Advocacy for Access and Prevention, the Dental Quality Alliance, and as a board member of the Washington State Dental Association.

Chief Dental Officer, Eastern Shore Rural Health System

Dr. Scott Wolpin has devoted his career to providing dentistry to disadvantaged adults and children through his work in federally qualified health centers for over 30 years. Dr. Wolpin graduated from Tufts University School of Dental Medicine in Boston, MA, in 1989 and completed a General Practice Residency at Johns Hopkins Hospital in Baltimore, MD, in 1990. Since then, Dr. Wolpin has served as dental director for three different community health center dental programs and holds academic appointments with Arizona School of Dentistry and Oral Health, Virginia Commonwealth University School of Dentistry, and Tufts University School of Dental Medicine, mentoring fourth-year dental students in community-based practice.

Dr. Wolpin serves as Immediate Past President of the National Network for Oral Health Access (NNOHA) and is Past President of both the Eastern Shore Dental Society, and the Association of Clinicians for the Underserved. Among his accolades includes being recognized as Maryland Outstanding Rural Health Practitioner in 2003, as Maryland Oral Health Hero in 2010 by U.S. Senator Benjamin Cardin and the Maryland Dental Action Coalition, was awarded 2015 Clinician Hero of the Year by the Association of Clinicians for the Underserved and received a Distinguished Service Award from the Eastern Shore Chamber of Commerce in 2020.

Sheena Hinson is a result-driven leader and expert advisor with a passion for solving problems. In addition to expertise in the business of dentistry, Sheena brings 15 years of clinical experience.  This is why she firmly believes that you can have an ethically profitable practice that aligns with your mission, core values, and patient care philosophy, all while bringing more joy into your workdays. Her dynamic skills in business development, growth strategy, dental analytics, engaging leadership, and team alignment make her an invaluable asset.

Beyond her work with D4, Sheena is an accomplished entrepreneur, having founded her own company and partnered with multiple others that have specialties in business development, technology, dental analytics, and teledentistry. Along with her team, she has also developed numerous training modules on business growth and development for business owners who prefer a do-it-yourself model. We are confident in her ability to help you achieve your goals and propel your organization forward.

A 28-year veteran in the dental operations space, Steve Kuchuris has a remarkable track record of successful consulting, turnaround, and integration projects, ranging from saving practices from bankruptcy to growing practice revenues by 300% and new patients by 500%.

Mr. Kuchuris is also an expert in dental marketing, having written, created, and produced tv commercials and infomercials, as well as created websites and print ads and other campaigns, resulting in increases in both new patients and practice revenues.

Steve practices Servant Leadership, and his supportive management and coaching style is embraced by those with whom he has worked, both by owners/clients and employees alike.

Steve is a graduate of one of the top 10 Pre-Medical/Pre-Dental schools in the country where he was granted special permission to complete a multi-disciplinary curriculum consisting of Pre-Medical/Pre-Dental, Health Science, and Business Management, graduating with honors and many awards.

Mr. Kuchuris is also the COO, Co-Owner and Founder at Complete Dental Management, LLC.

Dental Director, North Country HealthCare

Site Director, NYU Langone AEGD Residency, NCHC

Specialties: General dentistry Dental

Degree: Doctor of Dental Medicine, University of British Columbia School of Dentistry, Vancouver, BC, Canada

Dr. Bruce Wilcox grew up in an American family in Calgary, Canada. He returned to Canada for dental school and graduated from University of British Columbia School of Dentistry in 1994. During dental school, he had developed an interest in geriatric dentistry, particularly for the institutionalized patient. Shortly after graduating, he applied for a grant to provide mobile dental services into Longterm Care facilities in greater Vancouver, BC. When he and his wife, a foreign trained dentist, failed to get the grant, they reviewed their model and decided it could be self-sufficient and launched their practice, which became a full time practice within a year. This experience set the tone for his career in finding efficient solutions to public and community health challenges.

In 2001, Bruce returned to the United States. He has owned 2 private practices, worked as a managing director of a corporate practice, been dental director of 2 FQHC dental programs and been site director for 2 residency programs. He was adjunct faculty to the University of Washington School of dentistry for 11 years and has been Adjunct faculty for the Arizona School of Dental and Oral Health since 2006.

His personal Why is to mentor future leaders, who will change the world. His service and volunteer work include:

Site Director – NYU Langone AEGD residency – North Country HealthCare;

Executive Member, Northern Arizona Community Dental Days;

Chair,  Dental Peer Networking Committee, Arizona Association of Community Health Centers;

Volunteer instructor, Pathway Worldwide/Brigham Young University Idaho;

Chair, Washington Association for Community Health Dental Assistant Apprenticeship Subcommittee;

Committee member, Washington Association for Community Health Apprenticeship Program;

Contributing Subject Matter Expert – Safety Net Dental Clinic Manual (2nd ed.) National Maternal and Oral Health Resource Center;

Affiliate Faculty Appointment, University of Washington School of Dentistry - Department of Restorative Dentistry;

Affiliate Faculty Appointment, University of Washington School of Dentistry, Department of Pediatric Dentistry;

Affiliate Faculty Appointment, A.T. Still University - The Arizona School of Dental and Oral Health;

President North Central District Dental Society;

Vice President North Central District Dental Society;

Secretary/Treasurer North Central District Dental Society;

Dental Champion, Kittitas County ABCD Program; Member, Washington State oral Health Coalition; Member, Curriculum Committee,

Northwest Dental Residency

Site director – Columbia Valley Community Health

Chair, Department of Removable Prosthetic Dentistry;

Chair, Department of Geriatric Dentistry;

Chair, Department of Fixed Prosthetic Dentistry;

Chair, Department of Practice Management;

Yakima Valley Farm Workers Clinic, Dentist of the Year, December 2005;

Member, Geriatric Advisory Committee, College of Dental Surgeons of British Columbia.

McAllister Castelaz, DMD, FAGD is a general dentist and dental public health graduate student at the University of Iowa College of Dentistry. She received her bachelor’s degree in History (American Studies) and Nutritional Biochemistry and Metabolism from Case Western Reserve University and her Doctorate in Dental Medicine from Boston University Henry M. Goldman School of Dental Medicine. Following graduation, she completed a one year General Practice Residency at Lancaster General Hospital before entering full-time clinic practice. She has experience with providing care in federally qualified health centers, serving as a lead dentist at a clinic in Wisconsin and dental director at another clinic in Virginia. In May of 2023, Dr. Castelaz was inducted as Fellow to the Pierre Fauchard Academy, which honors dentists who have made contributions to dental literature, service to the profession, and service to the general community. Dr. Castelaz is an active member of the Wisconsin Dental Association, the Academy of General Dentistry, National Network for Oral Health Access, and the American Mobile and Teledentistry Alliance. Previously, she served as a project leader with the American Institute of Dental Public Health and National Network for Oral Health Access on their “Compendium of Veteran Oral Health Best, Promising, and Emerging Practice Approaches.” Her interests include addressing access to dental care challenges, improving care coordination, and development of a sustainable oral health workforce.