People

“We actively strive to help our clients solve their complex problems quickly and successfully.”

We firmly believe that we succeed only when our clients succeed. To this end, we partner with and work alongside our clients to build healthcare data solutions that drive meaningful process improvement and deliver high returns on investment.

The resulting solutions enable our clients to focus on what they do best – improve people's health and well-being. Building and supporting those solutions requires a top-notch team dedicated to hMetrix’ core principles:

Integrity

Genuine, honest answers are the key to helping our clients solve their problems so that they can be in a better place than they were before.

Respect

We respect our clients and the work that they do. Every day, our clients make a positive impact in the world of healthcare and the lives that they touch. Our goal is to provide new innovations and approaches to help our clients stay ahead.

Quality

At hMetrix, we always believe in meeting and exceeding our client's expectations and helping them plan for the future.

Reliability

Our clients depend on us to deliver robust solutions so that they can focus on doing what they do best.

Commitment

We are dedicated to the success of our clients, as their success means we are one step closer to positively transforming the healthcare ecosystem.

Leadership



George Chalissery, MS
Founder, President, CEO

George brings general expertise in technology, data science, and healthcare domain to the hMetrix team. He has 30 years of experience in healthcare analytics, prior to which he worked in the computer industry with companies like IBM and DEC. George holds an MS in Computer Engineering from Case Western Reserve University.


Tessie Chalissery, MBA
Chief Financial Officer

Tessie is responsible for financial management, accounting, and compliance. Tessie worked as an equity analyst before co-founding hMetrix. Tessie holds a BS in Economics and an MBA in Finance from Case Western Reserve University.


Dr. Sunil Shende, PhD
Chief Science Advisor

Dr. Shende is responsible for developing innovative algorithmic solutions & providing expert technical advice on data science and machine learning. He brings over three decades of academic research experience in designing and analyzing algorithms. Dr. Shende holds a PhD in Computer and Information Sciences from the University of Pennsylvania and is a professor in the Department of Computer Science at Rutgers University, Camden.


Audrey (El-Gamil) Speter
Vice President, Healthcare Policy

Audrey has extensive experience in Medicare and Medicaid policy research, including alternative payment models, post-acute care reform and the continuum of care across settings and services. As a seasoned consultant, Audrey managed and directed efforts for numerous state and federal clients as well as those in the commercial sector across a variety of care settings. Audrey holds a BA in Communications with a focus on Public Health from the University of Maryland College Park.


Nathan Gustav Hedberg, MPH, HCISPP
Vice President, Product Strategy

Nathan has over a decade of policy analysis and product development experience in the healthcare space. He has helped a wide range of medical device, payer, and provider clients to translate complex regulatory and coding challenges into user-friendly applications that provide actionable access to data resources. He holds an MPH from the University of Michigan and is HCISPP-certified.


Joanne McNamara, MBA
Director, Clinical Pharmacy Management

Joanne brings clinical pharmacy program development, managed care including Part D Medicare and PBM oversight, hospital pharmacy and skilled nursing facility pharmacy operations management and healthcare domain expertise to the hMetrix team. Joanne is licensed to practice pharmacy in the states of NY, NJ and LA, and she holds an MBA from Louisiana State University.


Maria Manavalan
Director, Data Management

Maria brings over a decade of expertise in data analytics and healthcare technology to hMetrix. Maria specializes in translating Big Data into actionable insights, managing payer claims data, leading complex legacy system transitions, and optimizing data processing through advanced claims grouping algorithms. Maria holds a BS in Computer Science and an MS in Mathematics from Bangalore University.


David Gonzalez
Director, Information Technology

David has over 10 years of experience in software development with specialized focus in release engineering/DevOps. He has experience in driving release process in all phases of the software development life cycle. He holds degrees in Electrical and Computer Engineering from Drexel University.


Matt Shimer, PhD
Director, Advanced Analytics

Matt has experience in healthcare policy analysis, with a focus on bundled payments, population health management, policy simulations, and pricing estimates. In addition to his policy work, Matt has contributed to care coordination initiatives within a healthcare system, developing risk models and cohort selection criteria to support population health strategies. Matt holds a PhD in Physics from Virginia Tech.