About Us :: Our Leadership :: Regional Directors

CEP Regional Directors provide administrative support and serve as the liason between hospital administration, emergency departments, and CEP. They are responsible for bringing the full resources of CEP to the local ED sites within the region. Regional Directors also work clinical ED shifts. Our Regional Directors provide valuable support to Medical Directors in all physician management situations, and regularly schedule meetings with hospital administration to ensure that client expectations are verified and met. As a direct result of this improved communication structure, hospital administrators have alternate pathways in which to share their thoughts and are protected from having to directly intervene in the correction of local phsyician problems.

Dan Culhane, MD,

is Regional Director of the Central California Region and has been a CEP America Partner since 2000. Prior to serving as Regional Director, Dr. Culhane was Medical Director at both Arroyo Grande Community Hospital in Arroyo Grande, California, and French Hospital Medical Center in San Luis Obispo, California. He is Board Certified in Emergency Medicine and an American College of Emergency Physicians Fellow. Dr. Culhane received a Bachelor of Science in Biochemistry and Molecular Biology from the University of California, Santa Barbara and earned his medical degree at the University of California, Los Angeles. He completed his residency in Emergency Medicine at the University of California, San Francisco - San Joaquin Valley Campus. Dr. Culhane is Chairman of the Arroyo Grande Community Hospital Quality Council and serves on the Medical Executive Committee. He is also the Chair of the Department of Medicine at French Hospital Medical Center and a member of the EMS Operations Committee.

David Hunter, MD,

is the Regional Director of the Central Valley/San Jose Region. He practices in the Emergency Department at Regional Medical Center of San Jose and also serves on the hospital’s Board of Trustees. Dr. Hunter is a member of the Alpha Omega Alpha Honorary Medical Society, Santa Clara County Medical Association, and the California Medical Association. He has also presided as Chair of the CEP America Compliance Committee since its inception. Dr. Hunter is also an American College of Emergency Physicians Fellow and an American Board of Emergency Medicine Diplomate. He received his bachelor's degrees in Biology and Literature from North Dakota State University and his medical degree from the University of Minnesota. He completed an internship and residency at Santa Clara Valley Medical Center in San Jose, California. Dr. Hunter was recognized for his contributions to CEP America in 1992 with a Distinguished Service Award and again in 2000 with a Stewardship Award.

Michael Sequeira, MD,

is Regional Director of the Inland Empire/Arizona Region and he practices at each of the sites in his region. Dr. Sequeira is an American College of Emergency Physicians Fellow, an American Board of Emergency Medicine Diplomate, a member of the American Board of Internal Medicine, and the National Board of Medical Examiners. He received a Bachelor of Arts in Zoology from Pomona College in Claremont, California, where he graduated summa cum laude. He earned his medical degree from the University of California, San Diego. Dr. Sequeira completed residencies in Internal and Emergency Medicine at the University of Oregon Health Sciences Center. Among his areas of expertise are the Rapid Medical Evaluation Program^© (RME), Emergency Department Operations, and Clinical Practice Speed and Efficiency. Dr. Sequeira has been awarded the prestigious distinction of Master Clinician by CEP America.

David Bolivar, MD,

joined CEP America in 2003 as the Medical Director of the Emergency Department at St. Mary Medical Center in Apple Valley, California. Dr. Bolivar obtained his Bachelor of Arts in Chemistry and his Master of Science in Chemistry at Loma Linda University in Loma Linda, California. He earned his medical degree at Universidad Autonoma in Guadalajara, Mexico, and returned to Loma Linda University to complete his residency in Internal Medicine. Dr. Bolivar currently serves as the Associate Regional Director for the CEP America Inland Empire/Arizona Region. He is an American Board of Emergency Medicine Diplomate and an American Board of Internal Medicine Diplomate. Dr. Bolivar remains connected with his home country of Columbia and has devoted his time and resources over the last decade to the founding of a school for 500 children residing in the remote Columbian province of Choco.

Martin Ogle, MD,

is Regional Director of the LA/Orange/Riverside County/Oregon Region. He practices at Saddleback Memorial Medical Center’s Emergency Department in Laguna Hills, California. Dr. Ogle is a member of the Society of Orange County Emergency Physicians, the California Medical Association, and the Orange County Medical Association. He is an American College of Emergency Physicians Fellow and an American Board of Emergency Medicine Diplomate. He is a member of CEP America’s Compliance Committee and is a former member of the Credentials and Partnership Affairs Committee (CPAC). Dr. Ogle is also among the esteemed faculty of the CEP America Medical Director Academy and is the Chair of the Board of the MedAmerica Mutual Risk Retention Group. He holds a Bachelor of Arts degree from Washington University in St. Louis, Missouri, and a medical degree from the University of Iowa College of Medicine. Dr. Ogle completed his residency in Emergency Medicine at the University of Arizona Health Sciences Center.

John Fredericks, MD,

is Regional Director of the San Diego/Imperial/Georgia Region. He is also a staff physician at the Palomar Medical Center and Pomerado Hospital Emergency Departments. Dr. Fredericks is an American Board of Internal Medicine Diplomate, an American Board of Emergency Medicine Diplomate, and an American College of Emergency Physicians Fellow. He is also a member of the San Diego County Medical Society and the California Medical Association. He holds a Bachelor of Arts in Biology from the University of California, San Diego and a medical degree from the University of California, Irvine. Dr. Fredericks completed his internship and residency in Internal Medicine at the University of California, Irvine - Medical Center. In 2005, CEP America honored him with the prestigious distinction of Master Clinician.

Mark Alderdice, MD,

has been a CEP America Partner since 1997. Dr. Alderdice completed his undergraduate studies at UC Berkeley, where he majored in Nutritional Sciences and Biochemistry. He earned his medical degree from UC Davis and completed an internship and residency in Family Practice at Natividad Medical Center, a UC San Francisco affiliated program. He has practiced Emergency Medicine for his entire professional career and has been involved in practice management for seventeen years. Prior to joining CEP America he served as Regional Director for another Emergency Medicine group. Dr. Alderdice is a Diplomate on the Board of Certification in Emergency Medicine, and a member of the San Francisco Medical Society. Born and raised in San Francisco and Daly City, Dr. Alderdice now practices Emergency Medicine a few blocks from the house where he was raised. He currently resides in Inverness, California.

Keith Loring, MD,

has been a CEP America Partner since 1998 and is currently the San Francisco Region’s Associate Regional Director. Dr. Loring is the Vice Chief of Staff at St. Mary’s Medical Center in San Francisco, California, and serves as the Assistant Medical Director in the Emergency Department. He is also an Assistant Professor of Surgery at the Division of Emergency Services at San Francisco General Hospital. Dr. Loring holds a Bachelor of Arts in German from the University of Colorado, Boulder and a combined MD-MPH from Johns Hopkins University. He completed his residency at the Stanford University and Kaiser-Permanente Emergency Medicine Residency Program, is an American College of Emergency Physicians Fellow, and an American Board of Emergency Medicine Diplomate. He is a member of the Society of Academic Emergency Medicine and the California Medical Association. Dr. Loring is also active in the San Francisco Medical Society as well as the San Francisco Emergency Physicians Association.

Ellis Weeker, MD,

is a founding Partner of CEP America and has served on the Board of Directors since the beginning. He is the Regional Director of the CEP America South and East Bay/Northern California Region and a staff physician in the Emergency Department at Good Samaritan Hospital in San Jose, California. Dr. Weeker is also a member of the Santa Clara County Medical Association. He received a Bachelor of Science from Tulane University and his medical degree from Louisiana State University Medical School in New Orleans. He completed his residency in Internal Medicine at Kaiser Foundation and Highland General Hospitals in Oakland, California. He is a Diplomate of the American Board of Emergency Medicine and a Fellow of the American College of Emergency Physicians. Dr. Weeker was also a recipient of CEP America's 2005 Stewardship Award.

Alice Hunter, MD,

is a Senior Partner who joined CEP America in 1979 and is the Medical Director of the Emergency Department at John Muir Medical Center in Walnut Creek, California. She earned a Bachelor of Arts with Honors from Stanford University and a medical degree from Dartmouth Medical School. She completed an Internal Medicine residency, including chief residency, at Cleveland Metropolitan Hospital/Case Western Reserve and then a fellowship in Emergency Medicine at San Francisco General Hospital. She is Board Certified in Internal Medicine and Emergency Medicine and is an American College of Emergency Physicians Fellow. She is a member of CEP America’s Credentials and Partnership Affairs Committee (CPAC) as well as an Associate Regional Director. At John Muir she has served on multiple committees including the Medical Executive Committee, the ED Back-up Committee, the Bed Utilization Committee, and the Trauma Executive Committee.