Consulting

Indepenent Group Management

  • John Throop President

    John Throop MD, MBA, FACEP is a practicing Emergency Medicine physician and the President of Emergency Care Specialists, a large independent physician practice with multiple sites and service lines.  Dr. Throop is a 1993 graduate of The University of Michigan and received his medical degree from the Wayne State University School of Medicine in 1998.  He completed his Emergency Medicine residency at The University of Virginia where he served as Chief Resident.  Dr. Throop received his Master of Business Administration from The George Washington University in 2017.

    Dr. Throop has 20 years of experience in physician leadership, practice administration, revenue cycle management, and clinical program development.  He has expertise in healthcare business strategy, new service line creation, and physician leadership development.  Dr. Throop has been instrumental in the growth of high-quality Emergency Medicine practice,  and in the development of Observation, Addiction, Sedation, Telemedicine, and Behavioral Health service lines.  He has led the institution of data driven quality programs, value focused business process improvement, and the creation of innovative acute unscheduled care models.

    Dr Throop serves on the Board of Directors of multiple healthcare entities including Medical Professional Liability, Revenue Cycle Management, and Behavioral Health companies.  He believes the application of sound business principles, intentional strategic development, and innovative program development are critical to the future success of healthcare businesses.

    Areas of Expertise and Interest:
    Innovative service line development.
    Healthcare strategy and strategic planning.
    Enterprise Risk Management for physician practices.
    Physician leadership development in business, administration, and advocacy.
    Clinical and business process improvement. 
    Value based payment model development.
    Contracting and contract negotiation.

  • Chris Port Regional Chief Medical Officer

    Chris Port MD, FACEP attended the University of Michigan for his undergraduate education and graduated from Wayne State University in 2002 with his medical degree. He completed his residency in Emergency Medicine at Grand Rapids Medical Education Partners at Butterworth hospital and has been with ECS since 2005.  Dr. Port started his career at Spectrum Health Zeeland Community Hospital where he served as the department medical director for 7 years.  SHZCH has been recognized at a Truven Top 100 Hospital, an IBM Watson Everest award winner, Leap Frog A rated and achieved a CMS 5 star score for quality.  Dr. Port also served as Chief of Staff at Zeeland from 2016-2017 and sat on the hospital board for 3 years.

    At ECS Dr. Port has served on the board for over 12 years.  His administrative positions in the company included Board Treasurer, Regional Chief Medical Officer and currently, Chief Medical Officer.  He helped develop and chairs the ECS Quality Committee and ECS Peer Review Committee.  He oversees the ECS Regional Operations meeting and works closely with all 13 site medical directors.  He was instrumental in bringing provider level data analytics into the corporation to drive performance and quality. He has developed a process for onboarding new providers focusing on productivity, charting, quality measures, department operations. 

    With the quality team he focused on MIPs leading to exceptional performance scores at all sites within ECS and 100 point scores at 2 different TINs.  A comprehensive program of provider education matched with individual feedback and RCM team education helped drive these results.  Currently he is working with BCBS and the MEDIC team to become the first physician group to directly join the quality initiative instead of contracting through a hospital.

    Within Spectrum Health Dr. Port currently sits on the Spectrum Health West Michigan Board which oversees operations at the 13 Spectrum Hospitals, the Medical group and SH Continuing care.  He is also a member of the Quality Safety and Experience Committee and Chairs the Emergency Department Standardization Committee. 

    Dr. Port believes in utilizing data to give individualized feedback and drive change.  He understands how to navigate a complex highly matrixed system and lead improvement.  He has found success working in a small community hospital, a large democratic group and within several different complex health systems.  He believes in identifying best practices and standardizing pathways to improve patient outcomes. 

    Areas of interest include:
    • MIPs, MEDIC and value based quality programs
    • Data Analytics
    • Provider review/improvement program
    • Patient flow and department operations
    • Transition to fee for value
    • Transition to care acute care provided outside of hospitals

  • Stephanie Mullennix Director of Clinical Practice/Quality & Integration

    Stephanie Mullennix, MSN, RN, AGCNS-BC, CEN received her Bachelor of Science in Nursing from Grand Valley State University, and her Master of Science in Nursing from Michigan State University. In addition to 19 years of experience in Emergency Nursing, she holds specialty certification in the State of Michigan as an Advanced Practice Registered Nurse, and is a Board Certified Adult-Gerontology Clinical Nurse Specialist. Stephanie is passionate about ensuring that individuals with emergent or urgent health care needs receive high-quality care. At ECS, Stephanie partners with physician and executive leaders to develop, drive and implement evidence-based clinical projects or programs to improve quality outcomes for patients and clinicians. 

    Stephanie is a systems thinker and has expertise in navigating complex health systems. Through the application of lean thinking, quality improvement methodologies, interprofessional knowledge and understanding of the dynamic health care environment, Stephanie can effectively partner with your team to develop and implement high-impact health solutions. Most recently Stephanie has focused her attention on opioid harm reduction strategies in the acute health setting. Through this work, Stephanie led the implementation of an Emergency Department Naloxone Distribution program in a large health system, has collaborated with physician leaders in developing effective programs to decrease opioid utilization and prescribing in the Emergency Department and has supported the successful launch of an inpatient Addiction Medicine consulting service. 


    Areas of Clinical Interest/Specialty:

    • Emergency Medicine

    • Emergency Nursing Triage and Assessment Standards

    • Policy Development & Standards of Care

    • Opioid Harm Reduction Strategies

    • Behavioral Health

    • Continuous Quality Improvement

    • Program Development

    • Merit & Value Based Payor Incentive Programs

    • Professional Peer Review

    • Advanced Practice Nursing Advocacy & Scope of Practice

    • Education Development

Medication Assisted Therapy for Substance Use Disorder

  • Todd Chassee Vice President of Clinical Services

    Todd Chassee MD, FACEP, Associate Professor of Emergency Medicine, has been practicing since 2006 at pediatric and adult level one trauma centers.  Previously, his practice included smaller rural Emergency Departments.  He has extensive leadership and experience in academic Emergency Medicine and Pre-Hospital Care.  Previously, he has served as Associate Program Director of the Emergency Medicine Residency.  Currently, he serves as the most senior faculty member of the Michigan State/Spectrum Health Emergency Medicine Residency while also overseeing the relationship between ECS and MSU.

    In addition to extensive leadership in academic Emergency Medicine, he serves as the medical director of the Kent County EMS system.  For. over 13 years, he has partnered with three local health systems,  ALS agencies, and numerous fire departments to collaborate in providing high quality pre-hospital care to the community.  Recent work has focused on a novel model for community paramedicine and collaborating with Dr. Adam Oostema on pre-hospital stroke research.


    Most recently, he has helped lead Professional Treatment Solutions, the division of ECS dedicated to the field of addiction medicine.  Along with a core team of physicians, advanced practice providers, and support staff, PTS has successfully partnered with organizations to provide staff for outpatient methadone and buprenorphine clinics.  PTS has expanded to include an inpatient consult service at a large health system.  Todd greatly enjoys the relational nature of his work and partnering with organizations and people to find innovative solutions.

  • Brad Riley Medical Toxicology

    Brad Riley MD, FACEP, FACMT graduated from the University of Michigan with an undergraduate degree in Biochemistry in 1997 and MD in 2001.  He then completed an Emergency Medicine residency at MSU/Spectrum Health, followed by a Fellowship in Medical Toxicology at UA/Banner Good Samaritan in Phoenix Arizona.  He returned to Grand Rapids MI in 2006 where he was the Associate Program Director of the Emergency Medicine Residency Program while working as an Attending in the Adult and Pediatric Emergency Departments.  He also ran a busy Medical Toxicology consult service.  

    His interest in Addiction Medicine grew out of his experiences in these two clinical arenas, and he obtained Fellowship board certification in 2020.  He now runs an inpatient consult Addiction Medicine service, and also works at outpatient methadone and buprenorphine clinics.  He is an Associate Professor in the Department of Emergency Medicine at MSU-CHM and Chief of the Addams Learning Society.




    Areas of expertise:
    • Opioid Use Disorder

    • Inpatient Addiction Medicine Consult Service
    • ED Medication Assisted Treatment Pathways
    • Outpatient Medication Assisted Treatment Services
    • Toxicology
    • Inpatient Toxicology Service
    • Outpatient Toxicology referrals
    • Medical Education
    • Resident and Medical Student rotations
    • Resident and Medical Student mentoring

Revenue Cycle Management and Advocacy

  • Don Powell Vice President of Revenue Cycle Management and Advocacy

    Don H Powell, DO, FACEP actively practices Emergency Medicine and has been a partner in ECS for 20 years.  He attained his undergraduate degree in Bio-Medical Science at Grand Valley State University and attained his medical degree from Michigan State University- College of Osteopathic Medicine in 1996. He finalized his residency in Emergency Medicine at Sinai-Grace Hospital in Detroit Michigan as the chief resident.

    Dr. Powell has been active on the ECS Board of Directors for nearly 18 years.  He currently serves on the ECS Executive Committee and is the VP Revenue Cycle Management & Advocacy.  In 2010 he assumed the role of President of Medical Management Specialists, a full cycle RCM company serving the needs of Emergency Medicine, Family Practice, GI and OMF practices. His roles in advocacy have included state and national involvement. Currently he is the Chair-Elect of the Emergency Department Practice Management Association (EDPMA) and has served on their Board of Directors and Executive Committee for the past 4 years. He has been instrumental in the development of a business and advocacy fellowship for EDPMA.

    Other roles include Immediate Past President of the Emergency Medicine Business Coalition (EMBC), an independent, democratic EM group coalition. He participates in EMBC on the Board of Directors and serves as Chair of the Membership Committee as well. Dr. Powell is a strong believer in the independent role of physician governance and ownership. Locally he serves as the ECS representative on the Answer Health Physician Organization (AHPO) Board of Directors, supporting independent physicians and their practices. 

    In addition to his clinical role in the Emergency Department, Dr. Powell also provides Observational Medicine and Sedation Services. 


    Areas of Expertise and Interest:

    • Billing and Coding
    • Revenue Cycle Management
    • Advocacy
    • Physician leadership development

    • Alternative payment models and expanding Emergency Medicine out of the traditional "4 walls of the ED” into all realms of acute unscheduled care
         • Telehealth

         • ET3 care coordination
         • Home observation, hospitalization, and post ED follow up