Anna Lee Amarnath, MD, MPH

Anna Lee Amarnath, MD, MPH, joined Noridian Healthcare Solutions in May, 2024 as a Contractor Medical Director. A graduate of Tufts University School of Medicine, Dr. Amarnath completed her residency training at Swedish Medical Center in Seattle, WA. As a board-certified in family medicine physician, Dr. Amarnath brings clinical experience providing full-spectrum primary care services and has completed additional fellowship training in quality, safety and comparative effectiveness research prior to joining Noridian. She brings professional experience in Medicaid medical policy, healthcare data collection processes, population health management and clinical performance measurement programs.

Smitha Ballyamanda, MD, CAQSM

Smitha Ballyamanda, MD, CAQSM, joined Noridian Healthcare Solutions in September 2018 as a Durable Medical Equipment Contractor Medical Director. She completed her Family Medicine residency and Primary Care Sports Medicine fellowship at Drexel University in Philadelphia, Pennsylvania. Board certified in Family Medicine and Primary Care Sports Medicine, Dr. Ballyamanda has broad clinical experience spanning family medicine, sports medicine, occupational medicine, and urgent care. Her professional background also includes extensive Medicare experience in physician review, medical policy development, Administrative Law Judge case work, clinical leadership, regulatory interpretation, program integrity oversight, and cross functional stakeholder engagement. She maintains active clinical practice in medical, occupational, and orthopedic urgent care settings.

Luke Barré, MD, MPH, FACP

Luke Barré, MD, MPH, FACP, joined Noridian Healthcare Solutions in January 2024 as a Contractor Medical Director. Dr. Barré completed his Internal Medicine residency at Roger Williams Medical Center, affiliated with Boston University, and went on to earn a Master of Public Health from Dartmouth College, where he also completed fellowship training in Rheumatology and residency training in General Preventive Medicine. He is board-certified in Internal Medicine, Rheumatology, and General Preventive Medicine. Dr. Barré brings a diverse background in outpatient and inpatient clinical care, preventive medicine, public health, systems improvement, and medical policy. During his preventive medicine training, he focused on reducing unwarranted variation in care, advancing systems-level improvement, and supporting quality-focused approaches to healthcare delivery. He also contributed to public health efforts through his work with the Rhode Island Department of Health, including initiatives related to the COVID-19 response and opioid-related programs. In addition to his role at Noridian, Dr. Barré remains active in clinical practice as an outpatient rheumatologist. He also serves in national physician leadership roles, including participation in the AMA Relative Value Scale Update Committee process and service on the American Board of Internal Medicine Approval Committee, underscoring his commitment to physician leadership, evidence-based decision-making, and high-quality care.

Jeanna Blitz, MD, FASA, DFPM

Jeanna Blitz, MD, FASA, DFPM joined Noridian Healthcare Solutions in November 2023 as a Contractor Medical Director. A graduate of the Albert Einstein College of Medicine, Dr. Blitz completed her residency in Anesthesiology at the Massachusetts General Hospital in Boston, MA. She is a board-certified anesthesiologist, who subspecializes in perioperative medicine. Dr. Blitz completed a fellowship in Clinical Quality and has clinical practice experience at the interface of perioperative care and population health. Dr. Blitz continues to practice clinical medicine in the perioperative setting as an anesthesiologist in North Carolina.

Felice Caldarella, MD, MBA, FACP, FACE

Felice Caldarella, MD, MBA, FACP, FACE joined Noridian Healthcare Solutions in August 2022 as a Durable Medical Equipment Contractor Medical Director. Dr. Caldarella completed his medical degree at SUNY Upstate Medical University. He then completed his internal medicine residency at Brown University Internal Medical Residency Program. He then went to University of Medicine and Dentistry of New Jersey in Newark for endocrinology fellowship. He is board-certified in Endocrinology, Diabetes and Metabolism. Dr. Caldarella brought 18 years of practice experience in caring for people with diabetes, endocrine disorders, and obesity. Dr. Caldarella also had a master's in business in administration from DeSales University with a concentration in healthcare administration. Dr. Caldarella was President of the American Association of Clinical Endocrinology after serving on the Board of Directors, Secretary, Treasurer, Vice-President, and President-Elect roles. In his leadership roles he chaired and served on numerous committees including as representative of AACE to Relative Value Update (RUC) Committee.

Raeann Capehart, MD

Raeann Capehart, MD, joined Noridian as a Contractor Medical Director in September 2020. Raeann graduated from the University of Oklahoma College of Medicine and trained in a General Surgery at the Medical College of Virginia with subsequent fellowships in Vascular Transplant and Surgical Oncology (MCV). She is a Diplomate of the American Board of Surgery with over 30 years of active practice in academic and private clinical facilities in North Texas and Virginia. Practice experience includes all aspects of Vascular and Transplant Surgery, Surgical Oncology, Bariatric Surgery, Oncoplastic Breast Surgery, Trauma and Wound Care. She has been an active member of multiple specialty societies, as well as Local, State and National Medical Associations. She has served as a Qualified Independent Reviewer in the Medical Care Ombudsman Program and Policy Review and as a Medicare Contractor Medical Director.

Marc Duerden MD, ABPMR

Marc Duerden MD, ABPMR joined Noridian Healthcare Solutions in April 2026 as a Contract medical Director. Dr. Duerden has over 35 years of experience in the field of Physical Medicine and Rehabilitation. He earned his undergraduate degree in Chemistry from Purdue University and his MD from Indiana University School of Medicine. He completed a residency in Physical Medicine and Rehabilitation at Northwestern University and then returned to the Indiana University School of Medicine to help start the PM&R residency program. Dr. Duerden is board certified in Physical Medicine and Rehabilitation and Spinal Cord Injury Medicine. Previously, he was in full time clinical practice for about 20 years Rehabilitation Associates of Indiana, which included being the Medical Director of the Inpatient Rehabilitation Facilities at Community East Hospital, Community Westview Hospital and Bloomington Regional Rehabilitation Hospital. He is still working part-time in clinical practice, doing primarily PM&R related services. He also continues to serve as the Adjunct Clinical Associate Professor in the Physical Medicine and Rehabilitation Department at Indiana University School of Medicine.

Angela Jenny, DO, DABFM

Angie Jenny, DO, DABFM, joined Noridian Healthcare Solutions as a Durable Medical Equipment Contractor Medical Director in August 2019. Dr. Jenny graduated from Lake Erie College of Osteopathic Medicine and completed her Family Medicine residency at a combined program with St. Louis University and Scott Air Force Base in Belleville, IL. Board-certified in Family Medicine, Dr. Jenny has clinical experience split between time as an Air Force family physician and more recently in the urgent-care setting. Dr. Jenny continues to practice clinical medicine part time.

Scott Johnson, MD, FACS

Scott Johnson, MD, FACS, joined Noridian Healthcare Solutions in September 2023 as a Contractor Medical Director. Dr. Johnson completed his general surgery and abdominal transplant at University of Cincinnati. Board-certified in general surgery, Dr. Johnson has practice experience in transplant, hepatobiliary trauma and general surgery services. He also has prior Medicare experience in UM and quality. Dr. Johnson continues to practice clinical medicine in the general and trauma setting.

Fred Mamuya, MD, PhD

Wilfred (Fred) Mamuya, MD, PhD, is the SVP Chief Medical Officer, providing policy oversight and leading medical director collaboration for Noridian's Jurisdictions A, D, E, F, and Supplemental Medical Review Contractor (SMRC) contracts. A graduate of Boston University School of Medicine, Dr. Mamuya completed his medical residency and fellowship in cardiovascular medicine at the Brigham & Women's Hospital, Boston, MA. He is board certified in internal medicine, specializing in cardiovascular disease. He is licensed to practice medicine in Massachusetts, and remains clinically active.

Eileen Moynihan, MD, FACP, MACRh

Eileen Moynihan, MD, FACP, MACRh joined Noridian Healthcare Solutions in [DATE] as a Contract Medical Director. She received her Doctor of Medicine from Temple University School of Medicine in Philadelphia, Penn. She completed rheumatology fellowships and internal medicine residencies at Hahnemann Hospital and Albert Einstein Medical Center, both in Philadelphia. Dr. Moynihan is a board-certified, practicing rheumatologist. She has worked with multiple medical associations and honor societies, including American Medical Association (AMA), U.S. Bone and Joint Initiative and Board of the American College of Rheumatology. Dr. Moynihan to the position of delegate, having initially selected her as an alternate delegate at the national AMA meetings, where she represents the organization in meetings with other specialty societies and state representatives. She chaired the Committee on Rheumatologic Care for three years for the American College of Rheumatology and served on the Board of Directors for that same organization. She has also previously been elected president of both her county and state medical societies.

Nectarios Pavlakos DDS

Nectarios Pavlakos, DDS, joined Noridian Healthcare Solutions in January 2024 as a Contractor Medical Director. He earned his Doctor of Dental Surgery degree from the University of Missouri–Kansas City and completed a residency in Advanced Education in General Dentistry at the University of New Mexico. Dr. Pavlakos brought with him a broad range of clinical experience from private practice, the VA hospital system, and the University of New Mexico Department of Dental Medicine. His clinical work has encompassed restorative and prosthodontic dentistry, implant dentistry, oral surgery, and hospital-based dental care. He currently serves as an Associate Professor within the University of New Mexico Department of Dental Medicine, where he continues to provide patient care and is actively involved in teaching and mentoring dental residents.

Aparna Rajadhyaksha MD, MBA

Aparna Rajadhyaksha MD, MBA, joined Noridian Healthcare Solutions in August 2023 as a Contractor Medical Director. Dr. Rajadhyaksha completed her Clinical Pathology at Baystate Medical Center, Tufts University followed by Medical Genetics at University of Miami. She is board-certified in Clinical Pathology, Medical Genetics and Biochemical Genetics. Dr. Rajadhyaksha has prior Medicare experience in Molecular Pathology and Laboratory Testing Review Program. She brought 15 years of practice experience in Genomic/Genetic Testing to Noridian and continues to practice clinical medicine in the Molecular Pathology setting.

Ann Marie Sun, MD

Ann Marie Sun, M.D., joined Noridian Healthcare Solutions in April 2019 as a Part A/B Contractor Medical Director. Dr. Sun graduated from the University of Missouri-Columbia and completed her residency in emergency medicine at Maricopa County Medical Center in Phoenix, AZ. As a board-certified emergency medicine physician, Dr. Sun brings clinical experience in both emergency medicine and primary care/urgent care medicine. Having previously served as medical director for several large health care systems, she also has expertise in hospital utilization, health plan utilization management, and population health.

Barry Whites, MD FCCP MSHA

Barry Whites, MD FCCP MSHA, joined Noridian Healthcare Solutions in March 2023 as a Contract Medical Director. Dr. Whites completed his medical school training, internship, Medicine Residency and Pulmonary/Critical Care Fellowship at the University of Mississippi Medical Center and his Master of Science in Healthcare Administration at the University of Alabama Birmingham. Board-certified in Internal Medicine and Pulmonary. Dr. Whites brings 34 years of practice experience in Pulmonary, Critical Care and Sleep Medicine consultation. He also has 19 years of Medicare experience in Medicare A/ B Fee for Service.

Richard Whitten, MD, MBA, FACP

Dr. Richard Whitten is a Medical Director for Noridian's Supplemental Medical Review Contractor (SMRC). He received his MD from Northwestern in Chicago, completed his internal medicine residency at the University of Washington (UW) and specialized in internal medicine/critical care.

Dick was the CMD liaison to both the American Medical Association (AMA) Current Procedural Terminology (CPT) and Resource Based Relative Value System (RBRVS) Update Committee (RUC) processes, was on the RUC for 12 years, and its Vice Chair for six. He holds an MBA with a focus on human behavior in health care organizations from Harvard Business School in Cambridge, Mass., has 30+ years of medical director experience and more than 30 years of clinical practice which continue at UW/Harborview in Seattle.