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Janelle Dennis M.D.

Physician Advisor

Janelle Dennis is an internal medicine physician with over a decade of experience delivering comprehensive primary care to diverse adult populations. She has provided longitudinal care for patients with acute and chronic medical conditions, with a strong focus on care coordination, preventive medicine, and patient-centered communication. Dr. Dennis has extensive experience in both in-person and telehealth settings and is highly skilled in electronic health record management, interdisciplinary collaboration, and quality-driven clinical workflows. 


Dr. Dennis most recently served as a Primary Care Physician at United Medical Center in Washington, DC, where she managed complex medical conditions, coordinated care with emergency, hospitalist, and specialty teams, and partnered closely with nursing and administrative staff to optimize patient outcomes. Earlier in her career, she held several clinical leadership and academic roles at Harlem Hospital, New York, including Associate Clinic Chief, Clerkship Director affiliated with Columbia University School of Medicine. 


In addition to her clinical background, Dr. Dennis holds a master’s degree in strategic communication from American University, enhancing her ability to lead teams, educate patients and clinicians, and translate complex medical information into clear, actionable guidance. She earned her Doctor of Medicine from Meharry Medical College and completed residency training in Internal Medicine–Pediatrics at Newark Beth Israel Medical Center.

About our team

MRCS is comprised of experts with over 100 years of combined experience. We are dedicated to revolutionizing the revenue cycle by leveraging technology, workflow mapping, and revenue leakage prevention strategies to improve revenue integrity. Our team holds several certifications including CPC, CMOM, CMPE, CHSP, and CPPM.

Meet our team

MRCS is comprised of experts with over 100 years of combined experience. We are dedicated to revolutionizing the revenue cycle by leveraging technology, workflow mapping, and revenue leakage prevention strategies to improve revenue integrity. Our team holds several certifications including CPC, CMOM, CMPE, CHSP, and CPPM.

Kem Tolliver, BS, FACMPE, CPC, CMOM

President & CEO

Kem Tolliver, BS, FACMPE, CPC, CMOM

Elizabeth (Liz) Atkinson-Molina

Business Operations Manager

Elizabeth (Liz) Atkinson-Molina

Sydney White

Financial Operations Manager

Sydney White

Steve Long

Sr. Director of Practice Management Services

Steve Long

Janelle Dennis M.D.

Physician Advisor

Janelle Dennis M.D.

Denise Walsh, CPC, CHSP

Sr. RCM, Coding & Credentialing Director

Denise Walsh, CPC, CHSP

Charletta Washington, MHA

Sr. RCM Integrity & Value Based Care Advisor

Charletta Washington, MHA

Shawntea (Taya) Gordon, MBA, FACMPE

Principal RCM Advisor

Shawntea (Taya) Gordon, MBA, FACMPE

Tiera Buchanan, CPC, CPPM

Sr. Revenue Cycle and Coding Advisor

Tiera Buchanan, CPC, CPPM

Ashley Bazil

Sr. Dental Billing & Coding Advisor

Ashley Bazil

Rosalind Harper, CRC-I, CPC, CDEO, CRC

Sr. Coding Compliance Instructor

Rosalind Harper, CRC-I, CPC, CDEO, CRC

Nick Fernandez, MBA

Director of Marketing & Communications

Nick Fernandez, MBA

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