Walk-in and Video Visit 7 days a week

Meet our Doctors at East County Urgent Care in El Cajon, CA

Our Doctors and Providers Are Committed to Helping You Feel Better!  We Are Conveniently Located at 1625 E. Main Street # 100 El Cajon, CA 92021. Call Us Today for More Information at (619) 442-9896.

Calvin Wong, MD, FAAFP
Family Medicine, Sports Medicine

Dr. Calvin Wong is a board-certified Family Medicine and fellowship trained Primary Care Sports Medicine physician. He is a graduate of the University of California, San Diego (UCSD) School of Medicine and has practiced in San Diego for over 15 years. He is currently the Medical Team Physician of the NFL San Diego Chargers and part of the medical team for the AHL San Diego Gulls.

He is a California native, having been born in Northern California. He graduated from the University of California, Berkeley with a B.S. in Biochemistry. After attending UCSD School of Medicine he completed a residency in Family Medicine at Kaiser Permanente Medical Center in Los Angeles. In addition, he completed advanced training in Primary Care Sports Medicine at UCSD. He has also achieved the honor of Fellow of the American Academy of Family Physicians.

As a volunteer clinical instructor in the Department of Family and Community Medicine at UCSD School of Medicine, he has shown a commitment to the education of future doctors.

Calvin Wong, MD, FAAFP

Calvin Wong, MD, FAAFP
Family Medicine, Sports Medicine

Dr. Calvin Wong is a board-certified Family Medicine and fellowship-trained Primary Care Sports Medicine physician. He is a graduate of the University of California, San Diego (UCSD) School of Medicine and has practiced in San Diego for over 15 years. He is currently the Medical Team Physician of the NFL San Diego Chargers and part of the medical team for the AHL San Diego Gulls.

He is a California native, having been born in Northern California. He graduated from the University of California, Berkeley with a B.S. in Biochemistry. After attending UCSD School of Medicine he completed a residency in Family Medicine at Kaiser Permanente Medical Center in Los Angeles. In addition, he completed advanced training in Primary Care Sports Medicine at UCSD. He has also achieved the honor of Fellow of the American Academy of Family Physicians.

As a volunteer clinical instructor in the Department of Family and Community Medicine at UCSD School of Medicine, he has shown a commitment to the education of future doctors.

Amy Foster, MMS, PA-C

Amy Foster is our full-time Certified Physician Assistant at the practice. She was born and raised in Poway, CA and attended Cal Poly San Luis Obispo for undergraduate studies. After graduating Cal Poly, she worked as an EMT and Emergency Room Technician at a local hospital for 2 years before starting PA school. Amy graduated with honors and obtained her MMS degree in Physician Assistant Studies from Nova Southeastern University in Fort Lauderdale, Florida. After completing her clinical rotations, Amy moved back to San Diego to be closer to her family. Amy is dedicated to providing exceptional patient care and enhancing patient-provider relationship. On her free time she enjoys going to the movies, reading, skiing, and practicing yoga.

Amy Foster, MMS, PA-C

Amy Foster, MMS, PA-C

Amy Foster is our full-time Certified Physician Assistant at the practice. She was born and raised in Poway, CA and attended Cal Poly San Luis Obispo for undergraduate studies. After graduating Cal Poly, she worked as an EMT and Emergency Room Technician at a local hospital for 2 years before starting PA school. Amy graduated with honors and obtained her MMS degree in Physician Assistant Studies from Nova Southeastern University in Fort Lauderdale, Florida. After completing her clinical rotations, Amy moved back to San Diego to be closer to her family. Amy is dedicated to providing exceptional patient care and enhancing patient-provider relationship. On her free time she enjoys going to the movies, reading, skiing, and practicing yoga.

Cory Vallance, PA

Cory comes to us with a multitude of experience. After retiring from the Air Force as a Logistician, Cory attended Eastern Virginia Medical School where she obtained her Masters of Physician Assistant degree. She has since worked in multiple specialties, to include Ob/Gyn, Urgent Care, Family Medicine, Wound Care, Mobile Medicine, Correctional Medicine and Internal Medicine. Her hobbies include surfing, biking, and traveling.

Cory Vallance, PA

Cory Vallance, PA

Cory comes to us with a multitude of experience. After retiring from the Air Force as a Logistician, Cory attended Eastern Virginia Medical School where she obtained her Masters of Physician Assistant degree. She has since worked in multiple specialties, to include Ob/Gyn, Urgent Care, Family Medicine, Wound Care, Mobile Medicine, Correctional Medicine and Internal Medicine. Her hobbies include surfing, biking, and traveling.

Erin Vierra, MSN, FNP-C

Erin is our part-time Family Nurse Practitioner. She is originally from Sacramento, CA. She received both her Bachelor’s in Nursing and her Master’s in Nursing from Emory University in Atlanta, Georgia. Prior to attending nursing school she received her Bachelor’s in Public Health from San Diego State University. She currently practices full-time internal medicine at Tri-City Medical Center in Oceanside and is Clinical Faculty at University of San Diego Hahn School of Nursing. She also sits as President-Elect for California Association of Nurse Practitioners San Diego Central Chapter. She is an active volunteer with American Red Cross and San Diego county Disaster Health Services. In her off time she enjoys loving on her dog, hiking, skiing, gardening and spending quality times with friends and family.

Erin Vierra, MSN, FNP-C

Erin Vierra, MSN, FNP-C

Erin is our part-time Family Nurse Practitioner. She is originally from Sacramento, CA. She received both her Bachelor’s in Nursing and her Master’s in Nursing from Emory University in Atlanta, Georgia. Prior to attending nursing school she received her Bachelor’s in Public Health from San Diego State University. She currently practices full-time internal medicine at Tri-City Medical Center in Oceanside and is Clinical Faculty at University of San Diego Hahn School of Nursing. She also sits as President-Elect for California Association of Nurse Practitioners San Diego Central Chapter. She is an active volunteer with American Red Cross and San Diego county Disaster Health Services. In her off time she enjoys loving on her dog, hiking, skiing, gardening and spending quality times with friends and family.