Connect With Us1-855-744-6895

About Us


Signature Partners is a collaboration among community doctors, hospitals and Inova hospitals and Inova doctors, all working together to transform healthcare delivery in Northern Virginia. We are a clinically integrated network, meaning our more than 1200 doctors collaborate to bring patients the highest quality care at an affordable price.

The Signature Partners Promise

We are dedicated to improving the health and wellness of our community through the “Triple Aim” goals of the Affordable Care Act, which inspired the healthcare community to think differently about health and how we deliver care:

1Improved quality of care and better patient outcomes

2Enhanced patient experience through increased access and seamless care coordination

3More affordable care

Why We’re Different

Signature Partners is leading healthcare delivery change in Northern Virginia through:

  • Clinical integration: In a clinically integrated network, doctors collaborate to ensure coordinated, high quality care for their patients. Clinical integration can help reduce medical costs and makes insurance more affordable.
  • Triple Aim*: In our network, our providers are rewarded for helping us meet our patient-centered goals of improved health care quality, lower costs and better patient experience.
  • Technology: The intense collaboration among the providers in our network is made possible through Electronic Health Records. Each provider and specialist caring for a patient has access to that patient’s important healthcare information, eliminating confusion and excess time and expense.

Code of Conduct & Signature Partners Compliance Plan

The Inova Code of Conduct describes the commitment of Signature Partners to the highest ethical standards of honesty and integrity. If you have a question or concern, please feel free to contact our Compliance Officer, Melissa J. Wright, by telephone at 703-286-3970 or by email at You may also report compliance concerns anonymously by calling the Inova Health System Compliance Hotline at 1 (888) 800-4030. In cooperation with Inova, Signature Partners is using the Inova Code of Conduct and the Compliance hotline at this time.

Inova Code of Conduct Revised Dec 2012 outlines the components of Signature Partners Accountable Care Organization (ACO) Compliance Program.

Learn more about what makes Signature Partners unique for our providers, patients, payers and employers.


Meet Our Executive Team


Russ Mohawk, President and Chief Executive Officer

Russ Mohawk is the President and Chief Executive Officer of Health Plans and Population Health Services at Inova Health Systems, where he is responsible for fiscal, operational, legislative, regulatory and human resources objectives. He has extensive executive management experience in the managed care industry including Medicare, Medicaid and private insurance. Russ earned a B.A. from Concordia College.


Matthew Poffenroth, MD, MBA, Chief Medical Officer

Dr. Poffenroth joined Signature Partners in 2014. He is a highly motivated physician executive with interest in leading and aligning physician networks toward a common goal of providing high-quality care within an integrated delivery system. Prior to assuming his role at Signature Partners, Dr. Poffenroth was Director of Clinical Integration for Johns Hopkins Community Physicians. He holds a Bachelor of Science degree from Pepperdine University, a Doctor of Medicine from Indiana University School of Medicine, and a Masters of Business Administration from The Johns Hopkins University, Carey Business School. He is also a Board member of the American Kidney Foundation and A Wider Circle.


Anne Rieger, RN, MBA, Chief Operating Officer

In her position as Chief Operating Officer at Signature Partners, Anne is responsible for the strategic development and leadership. Anne started with Inova Health System in 2001 and brings more than 25 years of nursing experience to her role as COO. She earned a Bachelor of Arts from the University of Arizona, a Registered Nursing degree from State University of New York, and a Master of Business Administration from George Mason University, School of Management. She is a board member for multiple organizations including The Women’s Center, Rx Partnership, The Fairfax County Community Health Care Network Advisory Board, and Medical Care for Children Partnership (MCCP). In her spare time she is a nurse volunteer for Operation Walk and the Mission of Mercy Project, and is a volunteer for Girls on the Run Northern Virginia.


Glenn Lohrmann, MBA, Chief Finance Officer

Glenn Lohrmann, is the Chief Financial Officer for the Population Health Services Division at Inova Health System. Glenn began his career in public accounting, specializing in health and life sciences clients.After leaving public accounting, he served in senior financial executive roles for community and tertiary hospitals, primary care physician groups, multi-specialty academic faculty groups, health plans, and DME companies.Glenn has served in national and international roles in for-profit and not-for-profit companies, and with public and private firms.Glenn earned his Bachelor of Science in Accounting, and a Master of Business Administration from the University of Maryland, Robert H. Smith School of Business.


Melissa J. Wright, JD, Compliance Officer

Melissa Wright is the Compliance Officer for the Population Health Services Division at Inova Health System. She is responsible for proactively identifying and mitigating risk within the organization, ensuring compliance with laws, regulations, contracts, and company policies, and for detecting, preventing, and correcting fraud, waste, and abuse. Melissa earned a Juris Doctor from Georgetown University Law Center and a Bachelor of Arts from Vanderbilt University.

Contact Us

Find out why so many patients, doctors and employers are choosing Signature Partners by calling 1-855-744-6895.

Signature Partners