Chief Executive Officer
As Chief Executive Officer of CleanSlate, Chris guides the nation’s leading provider of outpatient medication-assisted addiction treatment. With more than 20 years of executive leadership, Chris brings a patient-centered and people-first approach to CleanSlate’s legacy of increasing access to mission-driven care for those suffering from mental and behavioral health, substance and alcohol use disorders.
Prior to his role at CleanSlate, Chris served as president and chief operating officer of D4C Dental Brands, which supports specialty pediatric and orthodontic providers across 130 locations. He was chief operating officer of Correct Care Solutions (now Wellpath), a national provider of medical, mental and behavioral healthcare services to nearly 300,000 patients located in inpatient and residential treatment facilities, civil commitment centers, and local, state and federal correctional facilities. After graduating with a bachelor’s degree in engineering management from the United States Military Academy at West Point, Chris went on to serve as an officer in the United States Army and earn a master’s degree in business organizational management from the University of La Verne in California.
Claudie Jimenez, MD, MS
Chief Medical Officer
Claudie Jimenez, M.D., M.S., is the Chief Medical Officer. In her role, Dr. Jimenez is focused on ensuring that our medical group remains engaged in delivering the highest quality mental, behavioral and addiction services at the lowest cost to those seeking a path to long-term recovery. She plays key support roles in the execution of our marketing activities, ensuring that our medical voice is clear and fully represented.
Dr. Jimenez is board-certified in Addiction Medicine. Dr. Jimenez studied medicine at the University of Texas Health Science Center at Houston and completed a residency in Emergency Medicine at the University of Texas Southwestern Medical Center. Dr. Jimenez remained an attending and faculty member at Parkland Hospital where she completed her Master’s in health management at the University of Texas at Dallas. Dr. Jimenez completed her Addiction Medicine Fellowship at the Addiction Institute at St. Luke’s Roosevelt Hospital. Prior to joining CleanSlate, she served in physician leadership roles in addiction medicine and academic healthcare organizations. She is the President-elect of the Indiana Society of Addiction Medicine and has published several scholarly articles and book chapters on her work in emergency and addiction medicine.
Douglas C. McCracken
Chief Operating Officer
As Chief Operating Officer, Doug oversees CleanSlate’s business operations, with a focus on optimizing the organization’s operating capabilities, maximizing patient satisfaction, enabling same store growth and expanding the company’s national footprint.
Prior to joining CleanSlate, Doug served as President of the Oncology service line at Alliance HealthCare Services, the nation’s most comprehensive provider of outpatient Radiology and Oncology services for hospitals, health systems and physician groups. During his tenure at Alliance, Doug also held leadership roles as Chief Operating Officer of their Radiology service line and Senior Vice President of Finance. In addition to his significant experience in healthcare services, Doug also brings extensive expertise in the telecommunications and chemical industries. Doug received his Master of Business Administration from the Kelley School of Business at Indiana University and his Bachelor of Business Administration from Michigan State University.
Satkiran Singh Grewal, M.D. M. Sc.
Diplomate ABPM, Addiction Medicine
Regional Medical Director for Connecticut & Massachusetts
As Regional Medical Director, Dr. Grewal provides leadership and oversight in clinical care operations at the CleanSlate Centers in Connecticut and Massachusetts.
Dr. Grewal joined CleanSlate in 2017 as Center Medical Director in West Springfield, Massachusetts. Before CleanSlate, Dr. Grewal worked at Baystate Children’s Hospital, where he served as the Division Chief of the Pediatric Hematology-Oncology program. In this role, he acted as Lead Physician for the institution’s patient safety program, which was under the auspices of a multi-center collaborative consortium called “Solutions for Patient Safety.” He’s held the positions of both Associate Professor at Tufts University School of Medicine and the University of Massachusetts. Dr. Grewal has a Bachelor of Medicine and Bachelor of Surgery from the University of Delhi and completed his residency at the State University of New York at Stony Brook. Additionally, Dr. Grewal holds a Master of Science in Health Care Quality and Patient Safety from the Feinberg School of Medicine at Northwestern University. He is also board certified in addiction medicine.
Phyllis Losikoff, M.D., MPH
Diplomate ABPM, Addiction Medicine
Medical Director of Research and Development
As Medical Director of Research and Development for CleanSlate, Dr. Losikoff oversees the development and applications of clinical outcomes to facilitate the development and implementation of evidence-based innovations targeted at improving patients’ lives. She acts as the Clinical Advisor to the Quality and Regulatory team and a CleanSlate Medical Leadership team member. During her decade with the organization, Dr. Losikoff has also served as the Medical Director for clinics in the South East Region.
Prior to her role at CleanSlate, Dr. Losikoff served as the Assistant Professor at Warren Alpert School of Medicine, Brown University. While at Brown University, her research focused on Hepatitis C Virus (HCV), elucidating the immunology of early HCV, and providing adequate screenings and treatments to high-risk marginalized populations. Dr Losikoff has extensive experience in designing and conducting clinical research, resulting in multiple peer-reviewed publications and a U.S. patent. Additionally, Dr. Losikoff has over 20 years of experience providing care to at-risk adolescents and adults suffering from Substance Use Disorder (SUD) with expertise in infectious diseases prevalent among patients with SUDs. She obtained her Medical Degree from Tel Aviv University Medical School her Master of Public Health from the Hebrew University, and is Board certified in Addiction Medicine and Pediatric Infectious Diseases.
Sally Combest, M.D., DABA, FASAM
Regional Medical Director, Texas, Arizona and Wisconsin
Prior to joining CleanSlate, Dr. Combest’s professional experience included 13 years as a Clinical Associate Professor at University of Texas Health San Antonio, Senior Medical Adviser at American Business Systems, LLC, and Vice President at Lamar Anesthesia Associates. She is also skilled in physician relations and critical care. Dr. Combest obtained her Doctor of Medicine and completed her anesthesiology residency at the University of Texas HSC at San Antonio, and she has a Bachelor of Science in Nursing from University of Texas Arlington. Since joining CleanSlate in 2018, she has become board certified in addiction medicine.
Senior Vice President, Regulatory Compliance
As Vice President of Medical Affairs and Regulatory, Maria leads clinical and operational policy for all CleanSlate Outpatient Addiction Medicine Treatment Centers. She leads and develops plans to achieve both national accreditation and state licensure for all CleanSlate centers, ensuring our centers operate at the highest standards. She also manages research, review, audits and analysis for the organization. Her work focuses on creating impactful improvements for CleanSlate employees and patients. Throughout her career in medical affairs, regulatory and compliance, Maria has achieved excellence in organizational planning and corporate compliance, contributing to enhanced service delivery to patients suffering from substance use disorder.
Before joining CleanSlate in 2017, Maria’s professional experience included over two decades with Mercy Medical Center in Springfield, Massachusetts, where she worked her way up from a registered nurse to Chief Quality Officer. Over her career at Mercy Medical Center, she oversaw patient satisfaction, patient safety and regulatory compliance. Additionally, Maria received her Bachelor of Science in Nursing from the College of Our Lady of the Elma. She is a Licensed Registered Nurse in Massachusetts and a Certified Professional in Healthcare Quality.
Rebekah Michel, PHR-SHRM-CP
Senior Vice President of People Services Operations
As Senior Vice President of People Services Operations, Rebekah is responsible for attracting, retaining and developing talent for the leading private employer in addiction medicine and behavioral health. Michel has over 20 years of leadership experience in delivering innovative people solutions, developing and managing teams that operate in an agile way, and helping to build a high-performance culture that promotes diversity and inclusion. Her teams oversee a broad range of functions, including talent development and CleanSlate University, recruiting, employee relations and experience, business partnership, benefits and compensation.
Prior to joining CleanSlate, Rebekah held multiple leadership roles in human services, specializing in people services, talent acquisition and training business units. In addition, Rebekah has been a partner in private equity since 2004, specializing in growth organizations both organic and through acquisition. She holds a Bachelor of Science from Western Kentucky University, earned her Certified Professional Credential through the Society for Human Resource Management and her Professional in Human Resources Certificate from the Human Resource Certification Institute.
Tonya Bales, CPA
Senior Vice President of Revenue Cycle Management
As Senior Vice President of Revenue Cycle Management, Tonya oversees managed care contracting, central billing operations, provider enrollment and coding/documentation responsibilities for CleanSlate. Since joining CleanSlate in 2018, Tonya has led the team to implement new systems, develop internal departments, and process improvements, all to ensure a more efficient and effective experience for employees, providers, and patients.
Before CleanSlate, Tonya held management positions at leading healthcare organizations. She served as Director of Managed Care and Contracting with Healogics Specialty Physicians, the Nation’s largest provider of advanced wound care services, and Affiliate Chief Financial Officer of TeamHealth, one of the largest providers of hospital-based clinical outsourcing. She also served as the President and Owner of Bales CPA & Consulting, handling accounting functions, healthcare consulting and individual business tax planning. In addition to being a Certified Public Accountant, Tonya holds a Master of Accounting and a Bachelor of Science in Accounting, both from the University of Tennessee, Knoxville.
Nicole Delmonico, PBT(ASCP), MT(ASCP), MPAS, PA-C
Director of Clinical Precepting and EMR Training, Area Clinical Director
As Director of Clinical Precepting and EMR Training, Nicole provides leadership for the clinical preceptors and leads the precepting program. She directs and provides training for providers use of the Electronic Medical Record at CleanSlate.
Before joining CleanSlate six years ago, Nicole taught clinical laboratory medicine at Northeastern University and held physician assistant positions at the Massachusetts Department of Mental Health, Northwest Medical Specialties and Asthma and Allergy Physicians. Her professional distinctions include fellowships with the American Academy of Physician Assistants and Massachusetts Association of Physician Assistants, associate member of the American Society of Addiction Medicine and certification with the National Commission on Certification of Physician Assistants. She has a Bachelor of Science, Medical Laboratory Science and an Master of Science, Physician Assistant Studies from Northeastern University.
Brent Holliman, MBA
Senior Director of Application Development and Security
As Director of Application Development, Brent develops and implements innovative software solutions to improve both the employee and patient experience at CleanSlate. Brent managed the international team that built Ares, CleanSlate’s innovative EMR system.
Before joining CleanSlate in 2018, Brent worked as Application Development Manager at Century Aluminum, overseeing all internal custom web applications, and as Director of Product Architecture for HealthStream, Inc., developing and implementing a new microservice architecture. Brent received his Master of Business Administration from the University of Phoenix and his Bachelor of Business Administration from Belmont University. He is a Microsoft Certified Solutions Developer and a Microsoft Certified Database Administrator.
Board of Directors
Chairman of the Board
Since 2014, Greg Roth has been a partner of Guidon Partners, a co-investment firm that focuses on healthcare growth companies and has been a board member of multiple private equity-backed healthcare companies. Prior to Guidon Partners, he served in executive roles including CEO of TeamHealth, President of HCA’s Ambulatory Surgery Division, and held various other operational and financial positions in healthcare companies.
Diane M. Daych
Managing Partner, Granite Growth Health Partners
Diane Daych is a managing partner and co-founder at Granite Growth. She has more than 30 years of investing, advisory and operating experience, with more than 25 years of experience in the health services industry. Before founding Granite Growth, Diane led Apple Tree Partners’ healthcare services investing team. From 2010 to 2012, she was a managing director and co-head, Private Equity, of the Marwood Group.
Managing Partner, Granite Growth Health Partners
Mark Brooks is a managing partner and co-founder at Granite Growth. He previously co-founded MMC Health Services and Scale Venture Partners, a diversified venture firm with over $1.5 billion AUM, where he co-led the healthcare group for more than 15 years. He has more than 25 years of experience investing in, operating and managing high-growth health services companies, several of which have become market leaders.
Paul F. Brown
Advisory Partner, Granite Growth Health Partners
Paul Brown is a venture partner at Granite Growth. He has been an advisor for Well, Advantia Health, Swell and Vytalize Health. Paul holds the James Lee Sorenson Presidential Chair and is a professor of entrepreneurship at the University of Utah’s David Eccles School of Business. He has more than 25 years of experience as a venture capitalist, entrepreneur, healthcare executive, lawyer and professor.
Jared Teo is a Principal at HealthQuest Capital. He has over a decade and a half of experience as an operator of successfully exited healthcare companies, an investment banker at Goldman Sachs and a healthcare investor. Jared received a B.S. in Bioengineering from UC San Diego and an MBA from The Wharton School at the University of Pennsylvania.
Eugene C. Fleming
Gene Fleming is Chairman of Dermatology Solutions Group and serves on the Board of Directors for Aspire Health, Syus Inc., as well as CleanSlate Addiction Treatment Centers. A lifelong healthcare executive, Fleming most recently served as Executive Chairman of the Rehab Documentation Company until its purchase in May 2014 and on the board of PhyMed Holdings until its acquisition in November 2014. He was Chairman and CEO of Cogent Healthcare from 2005 until its acquisition in 2011.