Center Affiliates

Interested in becoming a C4 Center affiliate?

You can find out more about becoming a C4 Center affiliate member here or by contacting Dr. Denise Deverts, Associate Director and Center Manager (

Jon Arnold, MD, MS

  Clinical/health care topics: Clinical informatics, high-risk patients

  Population: Adults

  Click here for Dr. Arnold's profile

Amar Bansal, MD, FASN

Clinical/health care topics: General nephrology, chronic kidney disease, palliative care, conservative kidney management (medical management without dialysis)

Population: Adults

Method: Collaborative research

Click here for Dr. Bansal's profile

Jodie Bryk, MD

Clinical/health care topics: Care of high cost, high needs patients, ambulatory ICU program, patient advocacy, primary care for underserved, primary care for patients with severe persistent mental illness, interdisciplinary care coordination

Click here for Dr. Bryk's profile

Thuy Bui, MD

Clinical/health care topics: Social needs, homeless, structural competency, immigrant/refugee health, global health

Populations: Immigrants and refugees, adults

Methods: Qualitative, implementation science

Click here for Dr. Bui's profile

Utibe Essien, MD, MPH

Clinical/health care topics: Cardiovascular disease, atrial fibrillation, racial/ethnic disparities, social determinants of health, novel therapies

Populations: Veterans, racial/ethnic minoritized populations

Methods: Large database cohort studies, mixed-methods, qualitative, implementation science

Click here for Dr. Essien's profile

Gary Fischer, MD

Clinical/health care topics: Chronic disease management, population management, informatics, clinical decision support, patient portals

Click here for Dr. Fischer's profile

Tiffany Gary-Webb, PhD, MHS

Clinical/health care topics: Social determinants of diabetes and obesity, interventions to improve diabetes outcomes for Minority populations, translation of research findings to practice and real-world evaluation

Click here for Dr. Gary-Webb's profile

Lauren Gilkes, MD

Clinical/health care topics: Inpatient care, transitions of care, complex medical conditions, multidisciplinary care

Populations: Elderly, poor health literacy

Methods: Quality and improvement, safety

Click here for Dr. Gilkes's profile

Manisha Jhamb, MD, MPH

Clinical/health care topics: Chronic kidney disease (CKD), chronic diseases

Population: People with CKD

Methods: Population health management, health services research, machine learning, qualitative

   Click here for Dr. Jhamb's profile

Amber Johnson, MD, MS, MBA, FACC

Clinical/health care topics: Cardiovascular disease, women's heart disease

Population: Adults

Methods: Health services research, qualitative, secondary analyses, clinical trials

  Click here for Dr. Johnson's profile

Charles Jonassaint, PhD, MHS

Clinical/health care topics: Digital health, health disparities, mental health care, behavioral medicine

Populations: Sickle cell disease, adolescents and young adults, Black Americans, low-income populations

Methods: Human-centered design, implementation science, clinical trial methods

Click here for Dr. Jonassaint's profile

Mary Korytkowski, MD

Clinical/health care topics: Improving inpatient and outpatient care and outcomes of people with diabetes, women with polycystic ovary syndrome, disorders of androgen excess

Click here for Dr. Korytkowski's profile

Jodi Krall, PhD

Clinical/health care topics: Barriers to care, diabetes self-management education and support, health promotion/disease prevention, health-related social needs

Population: Pediatrics, emerging adults, people with type 1 and type 2 diabetes, underserved communities 

Methods: Behavioral interventions, pragmatic trials, quality improvement projects

                                          Click here for Dr. Krall's profile

Anita Leon-Jhong, MD

Population: Patients with complex medical and/or psychosocial needs

Click here for Dr. Leon-Jhong's profile

Carissa Low, PhD

Clinical/health care topics: Cancer, psychology, symptoms

Methods: Mobile sensing, machine learning, behavioral interventions

Click here for Dr. Low's profile

Jared Magnani, MD, MSc

Clinical/health care topics: Cardiovascular disease, social determinants and social factors, health literacy

Populations: Disadvantaged populations and communities including rurality and limited health literacy

Methods: Implementation research, health services research

Click here for Dr. Magnani's profile

Lena Makaroun, MD, MS

Clinical/health care topics: Social influences on aging health, elder abuse, caregiving, health services research

Populations: Older adults, Veterans

Methods: Large database cohort studies, mixed-methods, qualitative, implementation science, program evaluation

Click here for Dr. Makaroun's profile

Mylynda Massart, MD, PhD

Clinical/health care topics: Precision medicine, genetic testing, genetic or hereditary conditions, hereditary cancer risk evaluation, multi cancer early detection, Galleri, direct to consumer genetic testing validation, genetic counseling

Populations: All

Methods: Whole exomes and genome sequencing, MCED, genetic panel testing, research based testing, familial variant testing

                                         Click here for Dr. Massart's profile

Kathleen McTigue, MD, MPH, MS

Clinical/health care topics: Chronic disease prevention with focuses on obesity, women's health, information technology 

Population: Adults

Click here for Dr. McTigue's profile

Matthew Muldoon, MD, MPH

Clinical/health care topics: Hypertension, cardiovascular disease prevention, hyperlipidemia, metabolic syndrome, nutrition, health behaviors, behavior change

Methods: Mobile technology, digital interventions, intervention research, qualitative research, implementation research

   Click here for Dr. Muldoon's profile

Tom Radomski, MD, MS

Clinical/health care topics: Healthcare value, low-value care, low-value prescribing, deprescribing, dual health system use, medication-based risk adjustment

Populations: Older adults, Veterans

Methods: Observational methods using administrative data, qualitative methods, focus groups, semi-structured interviews, expert panels

  Click here for Dr. Radomski's profile

Bonny Rockette-Wagner, PhD

Clinical/health care topics: Physical activity, sedentary behavior, prevention of type 2 diabetes, cardiovascular health

Methods: Patient/provider-centered approaches, utilizing activity monitor data

Click here for Dr. Rockette-Wagner's profile

Sharon Ross, PhD

Clinical/health care topics: Obesity prevention, healthy lifestyle intervention

Populations: Latinx/Hispanic/Latino, families, children

Methods: Intervention research, qualitative, Community-Based Participatory Research (CBPR)

Click here for Dr. Ross' profile

Linda Siminario, RN, PhD, DCES

Clinical/health care topics: Clinical or health care topics (e.g., diabetes, primary care), diabetes self-management, education, health care delivery, telehealth, primary care

Populations: Pediatric, emerging adults, adults with type 1/type 2 diabetes, rural, underserved communities

Methods: Demonstration/observational studies, pragmatic trials, RCTs

  Click here for Dr. Siminario's profile

Julio Vega, PhD

Clinical/health care topics: Cancer, binge eating, Parkinson’s Disease

Population: Adults

Methods: Machine learning, time series, N-of-1 methods, user-centered design, data engineering

  Click here for Dr. Vega's profile