Clinical Faculty

Denise Ammon, MD
Assistant Facility Medical Director

Medical School: Tulane University

Residency: SUNY Downstate/Kings County

Professional Interests: Critical care, Ultrasound

Hobbies: Traveling, running, reality tv, german shepherds, and saving the world

David Adams, MD

Medical School: UCLA/Stanford

Residency: Highland Hospital

Professional Interests: (former) Sports Medical Staff; AFL, NFL and NHL team

Hobbies: Football Officiating x 30 years, Obstacle Course Racing and proud Grandfather

Sadi Dalieh, MD, MS, FACP

Medical School: Ohio State University

Residency: NEOMED

Professional Interests: Infectious Diseases, Addiction Medicine

Hobbies: Traveling

Doug DeMartinis, MD

Medical School: UC Irvine

Residency: San Joaquin General Hospital

Hobbies: Photography, backwoodsing, travel

Anatoliy Goltser, MD

Medical School: Drexel

Residency: Maimonides, Emergency Medicine (Brooklyn, NY)

Professional Interests: critical care, sports medicine

Hobbies: Weightlifting, skiing, mountain biking, changing diapers

Jonathan Mario Gutiérrez, MD

Medical School: Temple University School of Medicine

Residency: Texas Tech University Health Science Center, El Paso

Professional Interests: EKG and cardiology, teaching

Hobbies: Rugby, swimming, bicycling, exercise/weight lifting, family, dancing, music (listening but also trying to learn guitar & piano), getting rid of loans, learning about Emergency Medicine

Zack Haberman, MD

Medical School: Keck School of Medicine of USC

Residency: LA County+USC Medical Center

Professional Interests: ED Admin, QI

Hobbies: Skiing, baseball, ping pong, watching football, traveling off the beaten track, discovering the best cheap eats

Michael Herrera, DO

Medical School: Western University of Health Sciences College of Osteopathic Medicine

Residency: UC Davis Medical Center


Dennis Hsieh, MD, JD

Medical School: University of California, San Francisco

Residency: Highland Hospital, Oakland, CA

Professional Interests: Social Determinants of Health, Access to Care, Airway, Ultrasound, ED Flow/Efficiency, Quality Improvement, Cost of Care

Hobbies: Snowboarding, soccer, ultimate, sleeping

Douglas Malcolm, MD

Medical School: University of Utah School of Medicine

Residency: Kern Medical Center, Bakersfield, CA


Louis Marquet, DO 

Medical School: University of Medicine and Dentistry of New Jersey - School of Osteopathic Medicine 

Residency: Rowan SOM/Jefferson Health System

Hobbies: Fitness, homebrewing

David Martin, MD

Medical School: Columbia University College of Physicians and Surgeons 

Residency: Highland Hospital, Oakland, CA

Fellowship: Highland Hospital - Ultrasound/Global Health

Professional Interests: Medical Education, Diversity in Medicine, Point-of-Care Ultrasound in Latin America

Hobbies: Travel, fitness, hiking

Mohammad Reza Mohebbi, MD

Medical School: Tehran University of Medical Sciences

Residency: University of Iowa (Family Medicine) and University of Missouri-Columbia (Emergency Medicine)

Professional Interests: Clinical research & publication

Hobbies: Spending time with my family

Romaine S. Sangha, MD

Medical School: Ross University School of Medicine

Residency: University of Nebraska Medical Center -Omaha

Professional Interests: Outpatient care, community awareness, telehealth

Hobbies: Snowboarding, paintball, spending time with family, handyman projects

Eric Schultz, MD

Medical School: University of Tel Aviv

Residency: Temple University


Zina Semenovskaya, MD FAWM

Medical School: Weill Cornell Medical College

Residency: SUNY Downstate / Kings County

Fellowship: Wilderness Medicine at Stanford University Medical Center 

Professional Interests: Conservation medicine, global health, search and rescue, aeromedical retrieval, disaster relief, POC ultrasound

Hobbies: Hiking, backcountry and downhill skiing, kayaking, international travel, spending time with my husband, daughter and dogs

Scott Tcheng, MD

Medical School: University of Texas, Southwestern Medical Center

Residency: University of California, San Francisco / San Francisco General Hospital

Professional Interests: Ultrasound, medical education

Hobbies: Rock climbing, backpacking, camping, traveling, live music