Winfred Parnell, MD, is the chair of the Parkland Board of Managers and a board certified physician in obstetrics and gynecology.
Dr. Parnell practices obstetrics and gynecology at Carlos and Parnell, MD, PA, a medical practice he co-founded more than 30 years ago. He serves as a regional director for Doctors of America and is a member of the Parkland Foundation Physicians Council. He also serves as a delegate to the Texas Medical Association as well as board of directors of BBVA Compass Bank Dallas. Dr. Parnell previously served as a board member of the Dallas County Medical Society and for more than 15 years served as a board trustee at Medical City Hospital Dallas.
Throughout his career, Dr. Parnell has received commendations by numerous businesses, civic and social societies for his community involvement and professional accomplishments. In 2004, he was named one of “The Best Doctors in Dallas” by D Magazine. In 2009, he was selected to represent Texas at the White Coat Ceremony on Health Care Reform at the White House. In February 2013, Dr. Parnell was presented with the Torch Award from the Urban League of Greater Dallas and North Central Texas in recognition of his servant leadership and professional excellence in the Dallas community.
A native Floridian, Dr. Parnell earned a bachelor’s degree in pre-medical science at Florida A&M University in 1974 and a medical degree at the University of Florida College of Medicine in 1977. He completed residency training in obstetrics and gynecology at Parkland in 1982.
Dr. Parnell and his wife, Debra, are the proud parents of twins, Winfred and Wendy. His daughter, Wendy Parnell, MD, completed residency training at Parkland in 2011 and practices obstetrics and gynecology. His son, Winfred Parnell, MD, is pursuing residency training in family medicine. Dr. Parnell enjoys snow skiing, jogging and travel.
Mike Williams, FACHE is vice chair of the Parkland Board of Managers and serves as the President and Chief Executive Officer of Community Hospital Corporation, a not-for-profit hospital management company headquartered in Plano, TX.
A frequent national speaker on the impact of health reform on community hospitals, Mike brings with him over three decades of executive management, board relationship management and an understanding and passion for the not-for-profit mission of the healthcare industry. Under Mike’s leadership, Community Hospital Corporation was named as one of the nation’s top 150 Great Places to Work in Healthcare by Becker’s Hospital Review.
Prior to being the founding executive of CHC, Mike served as President of the Baptist Hospital in Knoxville, Tennessee, EVP and COO of The Children's Medical Center and Vice President for Baylor University Medical Center, both in Dallas, Texas.
Mr. Williams is the former Chairman of the Texas Hospital Association Board of Directors and a Fellow and past Regent with the American College of Healthcare Executives, and served as a Regional Policy Board Member of the American Hospital Association. Mike was the 2014 recipient of the Texas Hospital Association’s Earl M. Collier Award for Distinguished Health Care Administration. Mike and his wife Susan are actively involved in their church where Mike serves as a Member of the Board of Stewards, and they frequently participate in mission trips around the world. Mike and Susan have two grown children and enjoy spending time with their six grandchildren.
Mr. Williams graduated from the University of Alabama and holds a Master’s Degree in Health Administration from the Medical Center in Birmingham. Mike is a member of the Dean’s Advisory Board and was named as a distinguished alumnus in 2014.
Paula Dobbs-Wiggins, MD, is secretary of the Parkland Board of Managers, a board certified psychiatrist in private practice and an Adjunct Professor of the Practice of Pastoral Care at Perkins School of Theology, Southern Methodist University.
Throughout her career, Dr. Dobbs-Wiggins has had a particular interest in the interface between psychiatry and religion and the role clergy can play in decreasing stigma and promoting greater understanding of mental illness and its treatment.
A native of St. Louis, Missouri, Dr. Dobbs-Wiggins received her bachelor’s degree in biology (cum laude) from Harvard College and her medical degree from Harvard Medical School. During her senior year of college, she responded to a call to Christian ministry and was licensed and later ordained by the Eliot Congregational Church of Roxbury, Mass. She is currently a member of St. Luke “Community” United Methodist Church in Dallas, where she serves as an Assistant Pastor and Directress of the Angel & Cherub Choirs.
Dr. Dobbs-Wiggins is married to Kevin B. Wiggins and is the proud mother of four young adult children, Lauren Nichelle, Kyle Eliot, Paul Wesley and Kevin Jarrett.
Jerry Bryant is a member of the Parkland Board of Managers.
Bryant holds a Bachelor of Business Administration from the Michael Price College of Business at the University of Oklahoma and a Master of Health Administration from the School of Medicine at Washington University in St. Louis.
As a former senior leader at the Baylor Health Care System in Dallas, he orchestrated the acquisition, merger, integration and operation of the system’s first seven community hospitals. He worked with colleagues to identify, evaluate, approach, acquire and operate targeted acquisitions.
He later served as the Baylor System’s chief strategy officer – the strategy development process owner for an organization that, in 11 years, grew from a single location in Dallas to offer health and wellness services through 156 strategically located hospitals, physician practices and outpatient diagnostic and therapeutic services centers in five North Texas counties.
For 11 years, Bryant served as a member of the Research Advisory Council for the Health Systems Integration Study at Northwestern University, Chicago and at the University of California, Berkeley. He also served on the Industry Advisory Council of the National Science Foundation-sponsored Center for Health Management Research at the University of Washington, Seattle. Each of these collaborative research and development think tanks was focused on closing the gap between research into breakthrough care delivery methods and their application on the front lines of America’s hospitals.
A Life Fellow in the American College of Healthcare Executives, Bryant has served as a director of the American Hospital Association’s Region 7 Policy Board, Preservation Dallas, the Dallas Historical Society, the Texas Chapter of The Arthritis Foundation and the University of Oklahoma President’s Associates Council.
He and his wife, Linda, live in Lake Highlands near their married son, daughter and four active grandchildren. They are members of the Wilshire Baptist Church.
Marvin A. Earle is a member of the Parkland Board of Managers.
Marvin started his professional career as Nurse Recruiter for the 400 bed teaching hospital of Meharry Medical College, Human Resource Manager as Labor Union negotiator for an Outpatient Ambulatory clinic and Marketing Director for Riverside Adventist Hospital, all located in Nashville, Tennessee. During this time, he was appointed Colonel Aide de Camp by Governor Lamar Alexander for community and civic public service.
As a senior banker for 20 years serving lending giants Wells Fargo Bank, N.A and J. P Morgan Chase, Marvin has received advanced underwriting certifications in mortgage lending, default administration, loss mitigation, CRA Fair lending audit reviews of purchased loans, commercial real estate lending and medical/dental group financing. During the S/L financial crisis of the 80’s, he was managing partner of the CRC Group Inc. that specialized in Asset Management, loan modifications exceeding $1 million dollars LTV and commercial asset disposition for failed financial intuitions held by the FDIC/Resolution Trust Corporation. Marvin received various awards and recognitions from the banking/mortgage/real estate industries and was recognized by Operation Hope at the 2013 Hope Global Financial Dignity Summit, for his global advocacy to eliminate poverty, famine, debt and Oppression in 3rd World Countries. He is also a member of the National Association of mortgage brokers.
Recently, Marvin received an appointment from the National & Community Service Corporation, AmeriCorps, charged with strengthening inner city communities through economic development, Tax Credit Incentive Financing and civic engagement with Mayor Mike Rawlins, “Grow South Initiative 2015” for the City of Dallas. He is currently serving a 3 year commitment as Planning & Zoning Commissioner for the city of Lancaster, Texas and was recognized by its Mayor, Marcus Knight for his deep commitment, devotion and public service as the city experienced during his commission record economic development growth. Marvin is a 2014 Civic Leadership Academy Alumnus. Dallas based Economic Partners Investing in Communities recognized Marvin’s valuable “Safer Dallas” advocacy efforts during the Texas legislature 2015 session, lobbying for body cameras for Texas Peace Officers “Operation Blue Shield” campaign.
His current board appointments include the Lone Star Chapter of the Lupus Foundation and the Urban League of Greater Dallas, Finance Chairman. Marvin also serves on the Executive Committee Board of the Pine Forge Academy Foundation, his high school Alma Mata as Vice Chair of Fund Development for the $15 million dollar capital improvement campaign. Marvin was recently appointed to the Dallas County Democratic County Advisory Committee and Precinct Chairman respectively. Lastly, his most recent collaboration this year was the passage of a $125 million Bond passage for the Lancaster Independent School District.
Marvin and his wife, Dr. Diane Earle have been married 36 years and enjoy family time with their 3 adult children, their spouses, and 4 grandchildren. His undergraduate Bachelor of Science studies began in his hometown of upstate New York at the University of Rochester and he is an Alumnus of Oakwood University located in Huntsville, Alabama.
Natalie Jenkins Sorrell is the Deputy Chief Investment Officer for the $3.4 billion Employees’ Retirement Fund (EFR) of the City of Dallas. Natalie is responsible for the design and implementation of the overall investment strategy and policy for the Fund.
Her career in finance began in the mergers & acquisitions group in investment banking at J.P. Morgan in New York City where she specialized in real estate and media transactions. She later joined GE Equity, GE Capital’s private equity arm based in Stamford, CT, focusing on investments in both the healthcare and finance sectors. After graduate school Natalie worked in both global strategy and finance director roles at publishers McGraw-Hill in New York City, and Voyager Expanded Learning based in Dallas, Texas.
She joined Dallas ERF in 2006 and has spearheaded efforts to fulfill new private equity, private real estate, global equity, and master limited partnership (MLP) allocations of more than $600 million collectively. Most recently she has led the effort to build the Next Generation Manager Program at ERF allocating ten percent of the Fund to smaller, newer, and/ or minority owned investment managers across asset classes.
Natalie was a selected as a German Marshall Fellow in 2009, and as the recipient of the 2011 Rising Star of Public Funds Award from Institutional Investor News. More recently she was selected as one of the Dallas Business Journal’s 40 Under Forty, and one of the highlighted 40 Under Forty Investment Officers in the financial publication aiCIO. Natalie serves on the board of the Dallas Metropolitan YMCA and on the Advisory Board for the endowment of St. Phillip’s Academy in Dallas. She is also active in the community through the Dallas Chapter of The Links, Inc. where she is spearheading efforts to educate young minority students in S.T.E.M. (science, technology, engineering, and math) programs.
Natalie holds an MBA from The Wharton School at The University of Pennsylvania where she was a Robert A. Toigo Fellow, and a BA with honors from Spelman College. She is married to Dr. Michael J. Sorrell, President of Paul Quinn College. Natalie and Michael stay busy with their two young children, Michael Augustus, and Sage.
Scherry Johnson, EdD, is a member of the Parkland Board of Managers.
Dr. Johnson is a longtime Dallas educator. She retired in March 2013 from The University of Texas at Dallas (UTD) where she was an associate dean in the School of General Studies. Prior to her work as an associate dean, Dr. Johnson was the Vice President for University Affairs and was one of only four senior administrators on the President’s Cabinet. Before joining UTD, she was the Director of Development and Community Affairs at University Medical Center, later renamed Zale-Lipshy Hospital. During her tenure, she worked with a team of university staff, attorneys and underwriters to successfully complete a $40 million bond financing package.
Dr. Johnson earned her bachelor’s degree from Texas Tech University in Lubbock, and in 1974 received a Master of Arts in liberal studies from Southern Methodist University and a Master of Science in business management and administrative sciences in 1997 from UTD. In 1981, she earned her Doctor of Education in educational administration from the University of North Texas.
Dr. Johnson has served on numerous boards of directors and advisory boards, including but not limited to: Dallas World Salute, The Dallas 40, League of Women Voters, Urban Services YWCA, Clean Dallas, Inc., Girls Inc., Friends of Fair Park, Women's Center of Dallas, Dallas Summit and the Texas Association of Colleges of Teacher Education. Past and present memberships include: National Society of Fund Raising Executives, Leadership Dallas Alumni Association, Dallas Museum of Fine Arts, The 500, Inc. and the national and local chapters of Phi Delta Kappa.
Robert D. Martinez is a member of the Parkland Health & Hospital System Board of Managers.
Martinez is a litigator with experience in a diverse range of civil, criminal, arbitration and regulatory arenas. He is also a community leader with extensive board service including leadership, public speaking and general counsel roles.
Martinez is a partner with the law firm of Cotten Schmidt & Abbott, LLP in Fort Worth. He has been with the firm since 1996. In addition to his litigation work, he assists clients in avoiding litigation through early claim/case assessment and alternative dispute resolution. He also counsels clients on business organization, risk management and transactional strategies aimed at efficiency, compliance, conflict avoidance and forward-looking documentation strategies. In addition, he advises for-profit and non-profit organizations on Human Resources management and corporate governance issues.
Martinez began his litigation career as a Trial Attorney for the U.S. Department of Justice, serving in the Department’s Dallas Field Office and as an Assistant U.S. Attorney for the Eastern District of Michigan. Mr. Martinez was honored with a departmental award Outstanding Trial Attorney – 1981. Following six years of government service, he served as senior trial attorney for law firms in Dallas, and Southfield and Farmington, Michigan. Martinez has chaired the board and continues to serve on the board ex officio, as General Counsel, of the Greater Irving-Las Colinas Chamber of Commerce. He previously chaired and served on the boards of the Irving Convention and Visitors Bureau, the Irving Schools Foundation and Irving Symphony Orchestra Association.
Martinez received his juris doctor from Wayne State University School of Law in Detroit, Michigan. He received his bachelor’s degree in political Science from Wayne State University in Detroit.
Martinez’ wife Jill, also serves the community as the current Chairwoman of the Metrocare Services Board of Trustees. They are parents to children Angela and Michael Martinez and proud grandparents of Tyler, Jenna and Charlotte.
Jeff Tillotson is a member of the Parkland Board of Managers.
Few lawyers in the country have as much complex litigation experience as Jeff Tillotson. Even fewer have as much trial experience
in complex multi-party cases. For example, over the past few years alone, Jeff has been the lead lawyer in over a dozen major
multi-party cases brought in courts in nine different states for clients such as the nation's largest consumer finance company, its third
largest bank, its second largest credit card issuer and 40 of the nation's leading industrial concerns. These cases involved all
possible aspects of complex litigation -- multiple parties, competing venues, extensive discovery, complex strategy and intense
media scrutiny. The cases were profiled in publications like The Wall Street Journal and People Magazine as well as in television
media like Nightline and CBS Evening News. Jeff's experience with reputation management in the media has helped cultivate
victory for his clients.
Jeff has successfully handled numerous cases on appeal. Over the past few years, he argued cases before the Second, Fifth and
Ninth Circuit Courts of Appeal, as well as the Texas Court of Appeals for Dallas, Eastland, Tyler and Corpus Christi.
A native Texan, Jeff was born in San Antonio, Texas. His forebears settled in Texas generations ago, and his
great-great-great-great-great grandfather, Jose Antonio Navarro, was a signer of the Texas Declaration of Independence, a drafter
of the Texas Constitution, one of the first elected to the Texas Congress and later its Senate and the namesake for Navarro County
in East Texas.
Jesse Vallejo is a member of the Parkland Board of Managers.
Jesse started his career as a Registered Nurse in Kansas after graduating in 1992 from Garden City College. After working in Kansas for three years, he moved to Austin, TX where he worked in a trauma ICU. In 1997, he moved to Dallas where he continued to work in critical care caring for those in cardiovascular, neuro and surgical ICU.
In 2002, he became the Director of Clinical Services for a new national nurse staffing firm based in Frisco, TX seeking The Joint Commission certification in the nurse travel industry. He was instrumental in getting the certification for the nurse staffing firm. In 2011, an opportunity was offered to him to start a home health agency. After the agency was established, he was responsible to have the agency accredited by The Joint Commission and within 12 months, it was. He currently works for Children’s Healthcare System of Texas as a clinical nurse educator and is obtaining his M.S. in Integrated Healthcare Management.
In health care, his passion is employee and patient advocacy. With his experience in health care leadership, quality and accreditation, he feels that caring for those who provide care is just as important as caring for patients themselves. He has received many awards and recognitions throughout his career. Most recently, in 2015, he was named as a DFW Great 100 nurse, an organization that recognizes nurses for excellence in the art and science of nursing.
He is active in the community as a mentor for at risk children. He has previously served on the Dallas County Public Health Advisory Council and volunteers for multiple organizations that serve the community.
He and his partner, Omar Narvaez, live in Lake Highlands and have two miniature schnauzers.
Dr. Gonzalo Venegas was born in Cotija, Michoacan, Mexico. At a young age, he went to Mexico City where he attended medical school and specialized in Obstetrics and Gynecology. In 1983, he immigrated to the United States.
He completed his training in Obstetrics and Gynecology in 1988 at the University of Texas Southwestern Medical Center at Dallas. The following year, he started his medical practice at Methodist Hospital. With the support of the Methodist Hospital medical community, he established the Emmanuel Medical Mission. This medical mission serves the pool of various countries as well as his hometown of Cotija.
Dr. Venegas has been widely recognized for his humanitarian work. His most renowned awards are: the Hispanic Salute, Outstanding Clinical Professor at UT Southwestern department of Ob/GYN and the Rotary International-Paul Harry’s Fellowship Award. He has been award with recognition from organizations of the community including: Lulac, the Mexican Institute and Casa Guanajuato.
Since he finished his practice in 1988, he has been involved in educating communities via radio, television and the newspaper.