Arrowhead Regional Medical Center


Arrowhead Regional Medical Center is centrally located in Colton, CA and is within an hours drive to both mountains and coastline. ARMC’s Emergency Department is the third busiest in California (behind USC/LAC and RCH/UCR) with an annual volume hovering around 100,000. As a large volume emergency department and formerly AOA-approved (and now also ACGME-approved) Emergency Medicine residency, Arrowhead provides vigorous and broad training where residents become proficient at EM procedures and manage multiple critical patients simultaneously.


  • Department Chair: Dr. Rodney Borger MD, FACEP
  • Program Director: Carol Lee, MD
  • Associate Program Director: Gregory Fenati, DO
  • Assistant Program Director: Benjamin Archambeau, DO

Training Locations

Primary Hospital

Arrowhead Regional Medical Center - Colton, CA

  • ARMC has been a designated trauma center since 1985. The ED is a fully independent hospital department with a well-developed emergency medical services system and fully operating paramedic base station. The emergency department has 50 beds, organized into sections correlating with patient acuity. The RMET (Rapid Medical Evaluation & Treatment) area consists of a walk-in type of setting in which patients are seen for urgent care problems and also screened for a higher level of care. Higher acuity patients are triaged to one of five pods to which a resident is assigned responsibility at any one time. Pod A is the Trauma Bay consisting of eight beds, pods B and C are monitored beds for critically ill patients, and pod D is also a monitored section but for medium acuity patients, jail checks, and psychiatric screenings. Pod R is non-monitored area for low acuity.
  • The Behavioral Health Unit is a specialized facility on the hospitals campus where patients receive immediate psychiatric care under the supervision of a staff psychiatrist.
  • ARMC has three helicopter pads and owns two CT scanners; the newest 64-slice CT scanner will scan an abd/pelvis in six seconds. All radiology films are read in-house, with additional overnight “nighthawk” readings for CT scans. ARMC has a state of the art electronic PACS system with several monitors in the ED for radiograph viewing. Medical records are stored electronically so that previous hospital visits and lab results are available on the hospitals computer system within a matter of seconds. Three Ultrasonic portable ultrasound machines are available for use on trauma FAST scans and for diagnosing other pathology.

Affiliate Hospitals

St. Bernardine Medical Center - San Bernardino, CA

  • Residents spend their community EM time at St. Bernardine Medical Center and St. Mary’s Medical Center. St. Bernardine’s is a private community hospital, housing more than 463 beds in addition to a functioning RMET and a 20-bed emergency department. Its ED census averages 77,000 patients per year with a specialized emphasis on aggressive cardiology experience. St. Mary’s Medical Center has an ED census of 80,000 patients per year with emphasis on their cardiovascular program and being the only level II NICU center in the area.

Loma Linda University Medical Center - Loma Linda, CA

  • Pediatric Emergency Medicine & PICU is done during the PGY II year of training at Loma Linda University Medical Center in its Pediatric Emergency Department; this is the regional facility for all major pediatric traumas, seeing more than 25,000 patients per year. Loma Linda University Medical Center and Children’s Hospital is the only pediatric Level I trauma center in the region. The Loma Linda base station manages over 4000 pediatric radio runs per year. The 18-bed pediatric emergency department has 38 hours of attending coverage per day. Loma Linda University has the longest continuously running program in pediatric emergency medicine in California, accepting residents each year since 1992. Loma Linda University Medical Center and Children’s Hospital is a 724-bed tertiary care center including 232 pediatric beds.



  • EM 6.5 months
  • Anesthesia 0.5 month
  • OB/Gyn 0.5 month
  • Surgery .75 month
  • Medicine 1 month
  • MICU 1 month
  • Orthopedics .25 month
  • Research .5 month


  • EM 4 months
  • Community EM 2 months
  • MICU 1 month
  • SICU .75 month
  • NICU .75 month
  • Peds EM 1month
  • EMS .5 month
  • Elective 1 month


  • EM 10.5 months
  • Peds ER 1 month
  • Sub-specialty Track 0.5 month


  • Ultrasound
  • Wilderness Medicine
  • EMS
  • Research
  • Informatics

Contact Information

Arrowhead Regional Medical Center
Emergency Medicine Residency
400 N. Pepper Ave.
Colton, CA 92324

Danielle Matsuoka
EM Residency Coordinator
(909) 580-2159

Allyssa Davalos
Fellowship Coordinator
(909) 580-1862

External Links

See Also