Our Leadership

Jonathan Loutzenhiser is a healthcare executive, entrepreneur, and founder of American Medical Administrators. With decades of leadership experience across healthcare services, provider organizations, and healthcare technology, he has built a career centered on innovation, strategic growth, and operational excellence.

Throughout his career, Jon has successfully led complex healthcare organizations, negotiated large-scale partnerships, and guided mergers, acquisitions, and business transformations. His expertise spans physician services, healthcare administration, value-based care initiatives, and emerging healthcare technologies, with a consistent focus on improving outcomes and organizational performance.

As Founder and Chairman of the Board of American Medical Administrators, Jon helps shape the company's long-term vision and strategic direction. Known for his forward-thinking approach and ability to identify new opportunities, he remains dedicated to helping healthcare organizations navigate change, embrace innovation, and achieve sustainable success.

Nick DeStefane is a healthcare executive and entrepreneur with extensive experience in healthcare operations, strategic growth, and organizational leadership. As Chief Executive Officer of American Medical Administrators, he leads initiatives that help healthcare organizations improve performance, strengthen operations, and achieve long-term success.

Throughout his career, Nick has built a reputation for driving organizational growth, developing strong leadership teams, and identifying innovative opportunities across the healthcare continuum. His experience spans post-acute care, physician services, healthcare management, and business development, providing him with a broad perspective on the challenges and opportunities facing healthcare organizations today.

Known for his ability to connect people, build high-performing teams, and create momentum around strategic initiatives, Nick is committed to helping organizations navigate change, foster innovation, and deliver meaningful results for the patients and communities they serve.

Dr. Mark D. Goldberg is a physician leader with more than 30 years of experience in primary care, value-based care, and physician practice management. As Chief Medical Officer of American Medical Administrators, he leads clinical strategy initiatives focused on improving patient outcomes, supporting physicians, and advancing innovative models of care.

Throughout his career, Dr. Goldberg has built and led successful physician-led healthcare organizations, including one of the nation's early accredited accountable care organizations. His expertise spans primary care, population health, quality improvement, care coordination, and value-based healthcare delivery.

Known for his collaborative leadership style and commitment to strengthening the future of medicine, Dr. Goldberg works closely with physicians and healthcare leaders to develop sustainable care models that improve quality, enhance patient experiences, and support long-term practice success.

Dr. Abdullah Arshad is a physician executive with more than two decades of experience building and expanding healthcare services in rural and underserved communities. He began his career in Southeast Missouri, where he improved access to primary care, emergency medicine, and preventive services by developing rural health clinics, urgent care centers, diagnostic facilities, and hospital-based outpatient programs. He has served as Chief of Staff, Chief Medical Officer, and Chairman of hospital medical boards, and his work in Arkansas’s Mississippi County hospital systems gave him deep experience in hospital operations, physician leadership, and rural healthcare sustainability.

Central to Dr. Arshad’s philosophy is “bringing healthcare to the patient’s doorstep.” He connects primary and specialty care, advanced diagnostics, laboratory services, telehealth, and remote patient monitoring into one coordinated continuum of care. The aim is better access, earlier intervention, stronger outcomes, and fewer avoidable hospitalizations. He is a strong advocate for revitalizing rural hospitals by turning them into hubs of integrated regional networks that link hospitals, clinics, community health centers, and specialty outreach. This model lets hospitals stay financially sustainable while bringing advanced care closer to the communities they serve.

Dr. Jay Patel is a board-certified family medicine and geriatric physician, healthcare executive, and entrepreneur with over 20 years of experience in patient care, medical education, and healthcare leadership.

Dr. Patel began his career in academic medicine, completing his family medicine residency and geriatric medicine fellowship before transitioning into private practice and healthcare administration. He founded Southern Primary Care and has held numerous leadership positions, including hospital board member, physician network board director, and advisor on healthcare strategy and quality improvement. His contributions to medicine have earned him multiple recognitions, including the Women's Choice Award for Best Doctor and the Top Family Practitioner Award.

As Head of Population Health for American Medical Administrators (AMA), Dr. Patel leads accountable care initiatives, provider education, quality improvement, and population health strategies across multiple states. As Chief Medical Officer for Georgia, he oversees clinical excellence, provider development, and the delivery of high-quality, patient-centered care.

A physician who leads by example, Dr. Patel is passionate about preventive medicine, improving healthcare access, and transforming healthcare delivery through innovation and collaboration. His personal mission has always been “Hope, Health, and Healing for All.”

Dr. Jon Manzer is a board-certified family physician and physician executive with more than 20 years of experience in rural primary care, hospital medicine and practice leadership. As Chief Medical Officer of American Medical Missouri (AMMO), he provides clinical leadership for AMA's outpatient clinics across Missouri and Kansas, serves as medical director for AMA long-term care facilities in Kansas and southern Missouri, and continues to see patients in clinic.

A graduate of the University of Kansas School of Medicine, Dr. Manzer completed his family medicine residency through the University of Kansas–Wichita rural health track, with additional training in orthopedics and gastroenterology. In 2004 he founded Manzer Family Medicine in Carthage, Missouri, and built it into the largest independent primary care practice in the area: three clinics and two walk-in urgent care centers across Missouri and Kansas, together seeing 250 to 300 patients a day, with procedures from joint injections to endoscopy performed in-house. During the same years he practiced as a hospitalist at McCune-Brooks Regional Hospital, now Mercy Hospital Carthage, directed its hospitalist program and served as Chief of Staff from 2015 to 2020. The practice joined AMA in 2023.

A physician with a computer science background, Dr. Manzer helped structure the eClinicalWorks environment AMA runs on, partners with AMA's software team on clinical decision support and chart automation, and built HELM, the organization's licensing and credentialing tracker. He is a co-author of research forthcoming in Neurological Research and will lead AMA's new research and development division, launched in partnership with the Qureshi Foundation. Raised in Kinsley, Kansas, he is passionate about bringing comprehensive, well-rounded primary care to rural communities.

Kristin Allen is a healthcare executive with more than 35 years of experience spanning clinical care, post-acute services, healthcare operations, and administrative leadership. As Chief Administrative Officer of American Medical Administrators, she provides strategic oversight of organization’s operations, connecting strategic vision with day-to-day execution across physician & provider practices, hospital management, therapy programs, revenue cycle, ancillary services and healthcare technology.

Known for her proven track record of scaling organizations through strategic M&A, collaborative leadership style and commitment to excellence that enhance both patient outcomes and organizational performance, Kristin is passionate about building strong teams, supporting continuous improvement, and creating healthcare environments that deliver high-quality care while maintaining financial and operational success.

Brandon Holtmann is a finance executive with extensive experience in accounting, financial strategy, business valuation, and organizational growth. As Chief Financial Officer of American Medical Administrators, he oversees financial planning, reporting, and long-term strategic initiatives that support sustainable growth across the organization's healthcare portfolio.

Drawing on a strong background in finance, economics, and business management, Brandon brings a disciplined and analytical approach to financial leadership. His expertise includes financial operations, business valuations, strategic planning, and performance optimization, helping organizations make informed decisions and navigate complex business environments.

Known for his integrity, strategic mindset, and collaborative leadership style, Brandon is committed to building financially strong organizations that can invest in innovation, support operational excellence, and deliver long-term value.

Amy Schwartz, Esq., MHSA is a healthcare attorney and compliance executive with more than 20 years of experience advising hospitals, health systems, and healthcare organizations on regulatory, operational, and strategic matters. As Chief Legal Officer of American Medical Administrators, she provides leadership on legal strategy, compliance, risk management, governance, and healthcare operations across the organization's portfolio.

Amy's expertise spans healthcare law, regulatory compliance, privacy and security, corporate governance, and organizational risk management. Throughout her career, she has worked closely with healthcare executives, boards, providers, and policymakers to navigate complex regulatory environments and support sustainable growth.

Known for her collaborative approach and deep understanding of healthcare operations, Amy helps guide AMA and its affiliated organizations through an evolving healthcare landscape while ensuring a strong foundation of compliance, integrity, and organizational excellence.

Stuart W. McMahen is an attorney and healthcare executive with more than 15 years of legal experience, serving as Chief Compliance Officer and Senior Regulatory & Litigation Counsel for American Medical Administrators, Inc. (AMA). He oversees enterprise compliance, regulatory affairs, litigation, and legal risk management across AMA’s multi-state healthcare operations. His responsibilities include corporate governance, internal investigations, physician contracting compliance, and regulatory oversight of acquisitions and strategic transactions. He works closely with executive leadership and the Board of Directors to address complex legal and regulatory matters and support AMA’s operational and strategic initiatives.

Stuart’s legal background includes service as a federal judicial law clerk, Assistant District Attorney, municipal attorney, and law firm partner where his practice focused on healthcare compliance and regulatory issues. He also serves as the elected City Court Judge for Springhill, Louisiana. A graduate of Vanderbilt University Law School and licensed to practice law in Louisiana and Arkansas, he obtained his Certification in Healthcare Compliance (CHC) through HCCA in 2016.

Rob Allen is a healthcare workforce strategist and talent acquisition leader with extensive experience building high-performing teams and scalable recruitment programs across healthcare and technology organizations. As Chief Recruitment Officer of American Medical Administrators, he leads talent acquisition and workforce development initiatives that support the organization's continued growth and operational success.

Throughout his career, Rob has developed and implemented recruitment strategies that help organizations attract, retain, and develop top talent across clinical, operational, and leadership roles. His expertise spans workforce planning, organizational development, process optimization, and recruitment operations, with a focus on creating sustainable talent pipelines that meet evolving healthcare workforce needs.

Known for his data-driven approach and collaborative leadership style, Rob is passionate about connecting great people with meaningful opportunities. He remains committed to strengthening healthcare organizations through strategic talent solutions that drive performance, support quality care, and position organizations for long-term success.

Adrian Sweetwood is a technology executive with more than 30 years of experience leading technology strategy, systems innovation, and IT operations across national healthcare organizations, not-for-profits, and global enterprises including Hewlett-Packard, State Farm, and AT&T. As Chief Technology Officer for American Medical Administrators, he provides leadership for the innovation and scalability of patient-facing systems and the secure technology infrastructure that supports operations and the organization’s continued growth.

Known for aligning technology with business goals, Adrian partners with leaders across the organization to deliver scalable solutions, strengthen operational performance, and foster long-term organizational success.

Samantha Esser is a healthcare executive and laboratory operations leader with extensive experience building, scaling, and optimizing ancillary healthcare services. As Chief Ancillary Officer of American Medical Administrators, she leads the organization's ancillary service strategy, helping expand access, improve operational performance, and support high-quality patient care.

Samantha's expertise includes clinical laboratory operations, business development, strategic partnerships, and healthcare innovation. Throughout her career, she has successfully launched and grown high-complexity laboratories, led large-scale operational initiatives, and implemented data-driven solutions that improve efficiency, compliance, and financial performance.

Known for her entrepreneurial mindset, Samantha is passionate about developing scalable healthcare solutions that strengthen provider capabilities, enhance patient outcomes, and support long-term organizational growth.

Gina Toigo is a healthcare revenue cycle expert with more than 20 years of experience serving senior living and post-acute care organizations. She specializes in revenue optimization, billing operations, denial management, and process improvement, helping providers maximize reimbursement and strengthen financial performance.

Known for her practical, data-driven approach, Gina works closely with organizations to identify revenue opportunities, streamline workflows, and create sustainable solutions that improve both operational efficiency and cash flow.

Suzanne Grossman is a strategic marketing executive with more than 25 years of experience driving growth, brand development, and customer engagement across healthcare and consumer-focused organizations. As Vice President of Marketing for American Medical Administrators, she leads marketing, communications, and brand strategy initiatives that support organizational growth and strengthen stakeholder relationships.

With expertise in strategic planning, digital marketing, market research, and customer experience, Suzanne is known for developing data-driven programs that enhance brand performance and deliver measurable results. She is passionate about building strong teams, fostering collaboration, and creating meaningful connections that support long-term success.

Keith Minnis is a human resources executive with more than 35 years of experience leading workforce strategy, talent development, and organizational transformation across healthcare organizations. As Vice President of Human Resources for American Medical Administrators, he provides leadership for employee engagement and workforce planning initiatives that support organizational growth, and merger integration.

Keith is highly committed to building innovative solutions that align talent strategy with business goals, partnering with leaders across the organization to develop high-performing teams, strengthen culture, and foster long-term organizational success.

Bethany Hickey is an experienced healthcare attorney with expertise in corporate transactions, regulatory compliance, and strategic business matters. As General Counsel of American Medical Administrators, she advises leadership on legal, operational, and growth initiatives across the organization.

Her background includes mergers and acquisitions, contract negotiation, corporate governance, and healthcare compliance. Known for her strategic perspective and practical approach, Bethany helps guide AMA and its affiliated organizations through complex business decisions while supporting sustainable growth and long-term success.

Stephen Lillis is an experienced corporate attorney with a strong background in healthcare transactions, corporate governance, and business law. As In-House Counsel for American Medical Administrators, he provides legal guidance on strategic initiatives, acquisitions, and business operations across the organization's growing portfolio.

Stephen's expertise includes contract negotiation, mergers and acquisitions, regulatory compliance, and risk management. He has successfully supported numerous healthcare transactions and works closely with executive leadership to navigate complex legal and business decisions.

Known for his practical approach and trusted counsel, Stephen helps ensure AMA and its affiliated organizations are positioned for sustainable growth while operating with sound legal and business practices.

Full biography forthcoming.