Executive Leadership

Our Executive Leadership Team brings tremendous experience in the organ and tissue procurement industry and a shared commitment to saving and healing more lives to Donor Network West every day.

Janice F. Whaley Chief Executive Officer
President and CEO

Janice F. Whaley

Waldo Concepcion, M.D. Chief Medical Officer
Chief Medical Officer

Waldo Concepcion, M.D., FACS

Jeremy Gimbel Chief Financial Officer
Chief Financial Officer

Jeremy Gimbel

Mark Borer VP of Quality Systems
VP of Quality Systems

Mark Borer

VP of Business Intelligence and Data Solutions
VP of Business Intelligence and Data Solutions

Aninda Dutta

matt graves vp of tissue operations donor network west
VP of Tissue Operations

Matthew Graves

VP Donation Development and Organ Operations

Justin Johnson

macmacu vp of marketing and communications
VP of Marketing and Communications

Lauren Macmadu

JT Mason VP of Information Technology
VP of Information Technology

JT Mason

VP of Strategic Partnerships and Business Development

Luis Mayen

President and CEO

Janice F. Whaley

Janice F. Whaley serves as the President and Chief Executive Officer of Donor Network West, the second largest OPO in the U.S., joining the organization in January of 2019. After her arrival, the organization substantially increased organ recovery performance across multiple metrics, saving hundreds more lives. Her leadership, advocacy, and operational efforts, in both the state of California as well as the nation overall, serve as evidence of her passion.

Prior to assuming the Chief Executive role at Donor Network West, Whaley held leadership and clinical roles in three other OPOs, achieving similar results. Whaley served as Chief Operating Officer of LifeShare of Oklahoma, essentially doubling the number of organ donors early on in her five-year tenure. Before her arrival at LifeShare, Whaley held the role of Managing Director of Clinical Operations at LifeGift in Houston, TX, where she managed the complex processes involved in working with 5 transplant centers and 24 transplant programs, leading the region to record setting numbers of donors recovered.

A committed advocate for donation, Whaley has served in multiple capacities on several donation and transplantation related national boards and committees, including serving as President of the Association for Multicultural Affairs in Transplantation (AMAT), being appointed by the Health Resources and Services Administration (HRSA) to serve as a faculty member for the National Learning Congress (NLC) in 2012 and most recently, appointed to serve on the Secretary of Health and Human Services’ (DHHS) Advisory Council on Transplantation (ACOT).

Whaley received a Master of Public Health from the University of Alabama at Birmingham and a post graduate certificate from Harvard Business School, Executive Management Program. She graduated from Oakwood College in Huntsville, Alabama, with a Bachelor of Science in Biology and a minor in Chemistry. Whaley is dually certified in organ and tissue recovery through ABTC and the AATB, respectively.

Chief Medical Officer

Waldo Concepcion, M.D., FACS

Waldo Concepcion, M.D. began his role as Donor Network West’s Chief Medical Officer (CMO) in May of 2020. Concepcion was the former Chief of Clinical Transplantation and Pediatric Kidney Transplantation at Stanford University School of Medicine and Professor of Surgery and Pediatrics (Nephrology). He also served as Director of the Institute of Transplantation at Loma Linda University.

Waldo’s hobbies include traveling, spending time with family and friends, classical music, opera, and fine cuisine. However, spending time with his daughter, Zoe Grace, gives him the most enjoyment.

Chief Financial Officer

Jeremy Gimbel

As Chief Financial Officer (CFO) since May of 2020, Jeremy Gimbel is responsible for the organization’s financial functions including accounting, audit, budgeting, financial planning and analysis, and fiscal reporting.

Before joining Donor Network West, Gimbel was Head of Finance for a growing outpatient psychiatry practice. Prior to moving to San Francisco, he was with a PE-Backed tele-radiology group and started his healthcare financial leadership career at DaVita in corporate finance and strategy roles. His career spans more than 20 years, starting in NYC in investment banking before becoming a healthcare executive with varied experiences in financial management, business leadership, and strategy.

A Chicago native, Gimbel earned a Master of Business Administration (MBA) from the University of Southern California and is an active Certified Public Accountant (CPA) and Senior Professional in Human Resources (SPHR). He enjoys the wine country and kayaking.

VP of Quality Systems

Mark Borer

With Donor Network West for over 10 years, Mark Borer serves as the Vice President of Quality Systems. He has 30 years of experience performing clinical, technical, and quality roles associated with eye, organ, and tissue transplant. Before joining Donor Network West, Borer was with the California Institute for Medical Research, UCSF Orthopedic Surgery, and Tissue Banks International.

Mark, who was raised in the Midwest, is a graduate of Santa Clara University and is a Certified Eye Bank Technician and Certified Tissue Bank Specialist. He enjoys staying active by long distance running and mountain biking.

VP of Business Intelligence and Data Solutions

Aninda Dutta

Aninda Dutta serves as the Vice President of Business Intelligence and Data Solutions of Donor Network West.  Dutta came to Donor Network West in 2018 as an experienced leader with a demonstrated history in healthcare data analytics and a proven track record of driving business efficiency and profitability by leveraging expertise in Information Systems and Technology.  He worked to successfully navigate the major disruptions in the health insurance industry as a result of the Affordable Care Act and other electronic transformations. His track record and career accomplishments brought him to Donor Network West, helping the organization as well as the overall organ procurement industry adapt to new Centers for Medicare and Medicaid (CMS) Organ Procurement Organization (OPO) performance metrics. 

Dutta holds a Bachelor of Engineering Degree in Electronics and Power and a Master’s degree in Computer Science from California State University at Fresno.

VP of Tissue Operations

Matthew Graves

Matt Graves serves as Donor Network West’s Vice President of Tissue Operations. Matt joined the team in 2021 coming in with over a decade of leadership experience in Tissue Recovery and Donor Operations. Matt began his career as a Tissue Recovery Specialist and quickly discovered that donation was his passion. Matt finds great personal fulfillment in facilitating tissue donation and helping donors and their families preserve a legacy of hope, bringing public awareness to the benefits and need for tissue donation in our communities, and being an advocate for the incredibly dedicated and selfless health care workers who expertly coordinate and surgically recover these lifesaving gifts.

A Nevadan native, Matt received his Bachelors of Science in Biology from the University of Nevada, Reno in 2010 and his Executive Master of Healthcare Administration from the University of Nevada, Las Vegas in 2018. He is also a Certified Tissue Banking Specialist and a member of AOPO’s Tissue Banking Council.

In his free time he enjoys staying active with his family, taking advantage of his close proximity to Lake Tahoe, and nerding out on a wide variety of art, music, technology, pop culture, and books.

VP Donation Development and Organ Operations

Justin Johnson

Justin Johnson serves as the Vice President of Donation Development & Organ Operations. With more than 20 years of experience in health care, Justin has helped institutions, hospitals, and organ procurement organizations alike to set goals, serve patients and achieve mission.

Prior to joining Donor Network West, Johnson served as a director of clinical services at New Jersey Sharing Network, a federally designated organ procurement and tissue recovery
organization serving 113 hospitals, 6 transplant centers and 14 transplant programs in New Jersey. A registered nurse and certified procurement transplant coordinator (CPTC), Johnson led a team that achieved a 27% increase in organ donors during his first year at NJTO. Prior to joining New Jersey Sharing Network, Johnson worked for twelve years at LifeGift, a large, multi-regional organ procurement organization in Texas, holding substantial leadership and clinical positions in each of LifeGift’s three service areas.

Johnson received a Master of Biomedical Sciences & Human Donation Science from the University of Toledo. He graduated from West Texas A&M in Canyon, Texas, with a Bachelor of Science in Nursing. Johnson is certified in organ and tissue recovery through ABTC.

VP of Marketing and Communications

Lauren Macmadu

Lauren Macmadu joined Donor Network West in July of 2020 as the Vice President of Marketing and Communications. With 20 years of experience, Lauren has helped a variety of organizations reach new and diverse audiences by developing relevant and engaging integrated marketing communications campaigns. Previously, Lauren was the Director of Marketing and Communications at Anova, responsible for all product marketing and launches, events and media relations.

Lauren received her Master of Science in integrated marketing communications from Golden Gate University and her Bachelor of Arts in mass communications from the University of California at Berkeley. In addition to spending time with family and friends, Lauren is a passionate supporter of the Arts and enjoys attending the ballet and theatre.

VP of Information Technology

JT Mason

JT Mason has been with Donor Network West for over 10 years and serves as the VP of Information Technology. JT has worked in the information technology field for the past 30 years in such industries as Geology, Archaeology, Environmental Services, and Water Engineering.

JT earned his Master in Information Systems from the University of California, Berkeley and is a Certified Professional in Health Information Technology (CPHIT). Originally from Ames, Iowa, JT is an avid skier who has also lived in Maine, Colorado, Wyoming, and presently in California.

VP of Strategic Partnerships and Business Development

Luis Mayen

With nearly two decades in the field of organ donation, Luis Mayen has dedicated his career to honoring the generosity of organ donors and their families. Luis joined Donor Network West in 2002 after graduating from UC Berkeley with a pre-med degree in Biology. After beginning his career as an Organ Allocation Coordinator, he discovered a passion for team development and leadership, and subsequently served in various management roles. 

Luis currently serves as the Region 5 Representative on the UNOS Operations and Safety Committee, he Chairs the Organ Preservation Workgroup, Co-chairs Donor Network West’s Medical Advisory Board, and is the Vice President of Strategic Partnerships & Business Development at Donor Network West. Outside of work, Luis is an amateur beekeeper and volunteers with outreach groups to educate and empower Latinx youth to vote.

Senior Leadership


Sandy Andrada

Director of Donation Development, Bay Region
Kevin Campbell Director of Administration, Safety, and Risk

Kevin Campbell

Director of Administration, Safety, and Risk

Jeff Chao

Director of Organ Operations, Nevada
Valerie Chipman Director of Organ Allocation Operations Donor Network West

Valerie Chipman

Director of Organ Allocation Operations
Jocelyn Cooper Director of Organ Preservation and Surgical Services

Jocelyn Cooper

Director of Organ Preservation and Surgical Services

Susan Hall

Director of Quality Systems

Donyale John

Director of Organ Operations, West and East Bay

Lynnette Johnson

Director of Human Resources

Jaclyn Manzanedo

Director of Donation Development, Valley Region

Chanel Nakanishi

Director of Tissue Recovery
sandra olson CONTROLLER

Sandra Olson


Kim Patton

Director of Organ Operations, Valley Region

Ahmad Salehi, M.D., Ph.D

Giám đốc Chương trình Nghiên cứu
Eileen Spallino Director of Donation Development Family Services

Eileen Spallino

Director of Donation Development, Bay Region

Annie Stickel

Director of Community Engagement

Steven Ward

Director of Family Services

Stefanie Woidtke

Director of Performance Improvement

Board of Directors

Ex Officio
Janice F. Whaley
President and CEO
Donor Network West

Michael J. Peterson
Healthcare Consultant/Advisor

Carolyn Light
Executive Director, Transplant
UCSF Health Services, UCSF

Eric L. Williams, FACHE
Interim SVP, Area Manager
Kaiser Permanente, Santa Clara Medical Center

Board Members

Clark Andrew Bonham, M.D.
Director of Adult & Pediatric Living
Donor Liver Transplant Programs
Stanford University Medical Center

Stephan Busque, M.D.
Director, Adult Kidney & Pancreas Program
Associate Professor
Stanford Medical Center

Thomas A. Cycyota
President & Chief Executive Officer

Michael J. Ferenc, M.D.
Forensic Pathologist
Stanislaus County Sheriff’s Office

Luis Fonseca, FACHE
Chief Operating Officer
Alameda Health System

Chris Freise, M.D.
Professor & Interim Division Chief
UCSF Transplant Service

Christine Hartley, RN, MS, ACNP-BC
Administrative Director, Solid Organ Transplant
Stanford Healthcare

Harish D. Mahanty, M.D., FACS
Surgical Director of Kidney Transplant
California Pacific Medical Center

Frances McNeil, Esq.
Associate General Counsel
Law Department, Blue Shield of California

Ameet Nanda
Vice President & Site Administrator
California Pacific Medical Center – Sutter Health

Erik W. Olson, MHA
Renown Health Vice President & Chief Executive Officer
Renown Regional Medical Center

Rajalingam Raja, Ph.D., D(ABHI)
Clinical Professor, Department of Surgery
Director, Immunogenetics and Transplantation Laboratory
University of California, San Francisco

Anthony Robinson
Operations/Training Captain
San Francisco Fire Department, Airport Division

Na’eem Salaam
Vice President, Operations
Chan Zuckerberg Initiative

Larry Salinas
Executive Director, Governmental Relations
Office of the President, Fresno State University

Baljeet S. Sangha, MPH, FACHE
Chief Operating Officer & Deputy Director San Francisco Health Network
San Francisco Department of Public Health and County of SF

Rev. Bryson White
Research Assistant
The Society for the Study of Black Religion

Michelle Zyromski, Esq.
Zyromski Konicek LLP

Medical Advisory Board

Peter Chin-Hong, M.D.
Associate Medical Director, Donor Network West
Professor of Clinical Medicine, Step 3 Medicine
Associate Dean for Regional Campuses, UCSF School of Medicine
Director, Transplant ID Program, Division of Infectious Diseases
Infectious Disease Physician, UCSF

Luis Mayen
VP of Strategic Partnerships and Business Development, Donor Network West


Arash Afshinnik, M.D.
Associate Clinical Professor, UCSF
Director, Neurocritical Care

Janet Bellingham, M.D.
Transplant Surgeon
California Pacific Medical Center

Jack Boyd, M.D.
Clinical Assistant Professor, Cardiothoracic Surgery
Stanford University Medical Center

Julie Brown, MBA, MPH
Principal, Julie Brown Associates

Waldo Concepcion, M.D., FACS
Chief Medical Officer, Donor Network West

Ann DiMatteo, BSN, MSN
Transplant Administrator
Manager, Kidney/Pancreas Transplant Program
California Pacific Medical Center

Sara Dionne, PhD
Senior Laboratory Director
VRL Eurofins

Robert Fulbright, JD, MA
Bioethics Program Director
Renown Health

Jack Harbell, M.D.
Senior Associate Consultant
Abdominal Transplant Surgery, Hepatobiliary Surgery
Mayo Clinic, Scottsdale

Gerri James, RN, BSN, CCTC
Transplant Administrator
Manager of Kidney & Lung Transplant Programs
Lucile Packard Children’s Hospital

Darina Kavanaugh, DNP, RN, CPHQ
Chief Nurse Executive
Kaiser Permanente Oakland Medical Center

Jennifer Kerney, RN, MSN, CRNP
Assistant Director Transplant Services
Kidney Transplant Program
UCSF Medical Center

Thomas Krall, M.D.
Assistant Clinical Professor – Anesthesia
UCSF Medical Center

Jasleen Kukreja, M.D., MPH
Surgical Director of Lung Transplant Program
UCSF Medical Center

Ruchika Mishra, Ph.D.
Senior Bioethicist
Program in Medicine and Human Values
Sutter Health Bay Area

James Orr, M.D.
Trauma & Emergency Surgery
Kaiser Foundation Hospital – Vacaville

Thomas Pham, M.D.
Clinical Assistant Professor,
Abdominal Transplant Surgery
Stanford University School of Medicine

Brett Sheridan, M.D., FACS
Department Chair of Cardiac, Thoracic, Vascular Surgery
Chief of Cardiac Surgery
Surgical Director of Heart Transplantation
California Pacific Medical Center

Penny Stroud, MBA
Principal, Cattaneo & Stroud, Inc.

Moussa F. Yazbeck, M.D., FACP
Neurocritical Care / Critical Care Medicine
Vice Chief of Staff
John Muir Medical Center