Mission Statement

To provide clients with quality Healthcare Information Management (HIM) and Clinical Services; to train, educate and mentor team members; to promote a joyful work experience; to be socially-conscious and to grow the business with integrity.

Company Overview

STAR Medical Auditing Services (STAR) is a boutique consulting firm that provides Health Information Management (HIM) and Clinical services to organizations in the healthcare ecosystem across the U.S.

STAR's exceptional team of professionals consists of HIM and Clinical leaders, Registered Nurses, seasoned Medical Auditors and Coders, Clinical Documentation Integrity experts, and much more.

Our clients include healthcare providers, insurance payors, law firms, a Medicare Administrative Contractor (MAC). STAR understands that every client’s challenges and needs are unique. That is why we take the time to listen, understand, and customize our services to deliver the highest value to our clients.

Meet Our Leadership Team

Robyn Petersen, Founder & CEO

Founder & CEO

Robyn Petersen

Robyn is a seasoned Outpatient and ProFee Auditor, and holds several professional credentials and certifications. She worked at Maui Memorial Medical Center on Policy and Compliance & Privacy for several years, and also as an outpatient coder. Subsequently, she worked as an auditor for various healthcare solution agencies. Over the years, Robyn has developed a deep passion for the field. Realizing that there is a need for quality auditing services and education, she founded STAR Medical Auditing Services in 2017. Robyn has made it her mission to deliver exceptional medical auditing and coding services to healthcare professionals, and education, mentorship, and joy to fellow coders and auditors.

Robyn has a B.S. degree in Human Resources Management and an A.A.S. degree in Health Information Technology.

Credentials & Certifications

  • Registered Health Information Technician (RHIT)

  • Certified Professional Coder (CPC)

  • Certified Coding Specialist (CCS)

  • Certified Professional Medical Auditor (CPMA)


Jian Liu, Co-Founder & CSO

Co-Founder & CSO

Jian Liu

Jian has been with STAR since its early days and has been instrumental in shaping the company into what it is today. He brings to the team over a decade of experience in Healthcare and Technology. As the CSO for STAR, Jian is responsible for the strategic and continual growth of STAR. Extending his passion for entrepreneurship, Jian also works with local entrepreneurs and artists to bring their business vision to life. Over the years, Jian has worked with several Fortune 50 companies as well as with a few startups and non-profits.

Jian holds an MBA and Certificate of Entrepreneurship from University of Washington, Foster School of Business, and obtained his Marketing degree from Seattle University.


Insewa Berridge, Senior Director of HIM Services

Senior Director of HIM Services

Insewa Marcus

Insewa is a Medical Coding and Auditing rock star with over 21 years experience in the industry. As our Director of Auditing & Coding, her goal is to ensure our team and our clients’ internal team are coding and auditing to the highest standards. She applies her knowledge and skills in several capacities including conducting audits, researching coding and compliance issues, developing coding and auditing tools, and creating coder and provider education along with mentoring new coders.

Credentials & Certifications

  • Certified Professional Medical Auditor (CPMA)

  • Certified Professional Coder (CPC)


Larry LaBarge, Director of Clinical Services

Director of Clinical Services

Larry LaBarge

Larry has over 24 years of extensive nursing experience, including 17 years of clinical experience in Critical Care, Medical/Surgical, Emergency, and Labor & Delivery, as well as seven years of experience in Medical Review. He has conducted medical review within the Fee-For-Service Medicare and Medicaid programs, performing Utilization Review, Medical Necessity, Quality, and Clinical/DRG Validation audits, as well as Recoupment Audits for the Office of Inspector General (OIG).

Credentials & Certifications

  • Bachelor’s Degree in Nursing

  • Registered Nurse (RN)

  • Certified Professional in Healthcare Quality (CPHQ)

  • Certified Medical-Surgical Registered Nurse (CMSRN)


Marlisa Coloso, Business Development & HIM Consulting

Business Development & Senior HIM Consultant

Marlisa Coloso

Marlisa brings to STAR over 30 years of Health Information Management (HIM) experience. She has worked as a HIM leader with major health organizations in Hawaii including HHSC Kauai and Maui Memorial Medical Center. As the Director of Business Development, Marlisa is responsible for building strong relationships with our customers and providing her expertise to help them achieve their goals and reach their full potential.

Credentials & Certifications

  • Registered Health Information Administrator (RHIA)

  • Certified Revenue Cycle Representative (CRCR)

  • Certified Coding Specialist (CCS)