About
Dr. Erik P. Contreras is a board-certified internal medicine physician and a third-generation Arizonan. He earned his undergraduate degree from Arizona State University and completed medical school at the Universidad Autónoma de Guadalajara. He then pursued clinical training at New York Medical College before returning to Arizona for his internal medicine residency at Maricopa County Hospital.
After residency, Dr. Contreras joined Yavapai Regional Medical Center in Prescott as a hospitalist and ICU physician. He now serves as Chief of Staff there and maintains active admitting privileges. His clinical interests span medical weight loss, hormone replacement therapy, peptide therapy, and functional body wellness. He approaches emerging therapies with careful clinical evaluation, staying current through national conferences and physician-led education. Dr. Contreras founded High Mark Medicine to deliver thorough, personalized care to the Prescott community he calls home.
Education & Training
Undergraduate
Arizona State University
Medical School
Universidad Autónoma de Guadalajara
Residency
Internal Medicine, Maricopa County Hospital
Additional Training
Clinical training at New York Medical College
Certifications
Conditions Treated
Who is Dr. Contreras right for?
Dr. Contreras is a strong fit for adults who want a physician managing both their outpatient health and any hospital care. Patients dealing with metabolic syndrome, insulin resistance, hormonal imbalances, or obesity benefit from his integrated approach. He also works well with adults interested in peptide therapy or body composition improvement. Anyone who values direct access to their physician and continuity across care settings will find his model well suited to their needs.
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Frequently Asked Questions
Dr. Contreras treats a wide range of adult conditions. These include obesity, metabolic syndrome, insulin resistance, PCOS, hormonal imbalances, diabetes, hypertension, cardiovascular risk, fatigue, and chronic disease management. He also focuses on preventive care and long-term health optimization.
Yes. Dr. Contreras holds board certification in internal medicine. He completed his residency at Maricopa County Hospital and pursued additional clinical training at New York Medical College.
Yes. Dr. Contreras provides personalized hormone optimization for both men and women. Treatment addresses energy, mood, sleep, and overall well-being through individualized plans.
Dr. Contreras begins every weight loss evaluation with a comprehensive medical and lab assessment. He identifies metabolic function, hormonal factors, and underlying obstacles. Treatment plans may include nutritional strategy, lifestyle changes, hormone evaluation, and evidence-based medications such as GLP-1 when appropriate.
Yes. Dr. Contreras integrates peptide therapy into broader, medically guided plans when appropriate. He evaluates each patient thoroughly before considering peptides and stays current through ongoing education and national conferences focused on emerging research.
Yes. Dr. Contreras holds active admitting privileges at Yavapai Regional Medical Center in Prescott and currently serves as Chief of Staff there. He coordinates care directly during hospitalizations, bridging outpatient and inpatient medicine for his patients.
Dr. Contreras completed medical school at the Universidad Autónoma de Guadalajara and pursued clinical training at New York Medical College. He returned to Arizona to finish his internal medicine residency at Maricopa County Hospital.
Yes. High Mark Medicine offers Emsculpt NEO for non-invasive body contouring, muscle building, and fat reduction. The practice also offers Emsella Chair Therapy for pelvic floor strengthening and improved bladder control.
Doctor profile last updated June 11, 2026