Internal Medicine

The Internal Medicine Department of Riverside University Health System (RUHS) is pleased and excited to welcome you to this web page.

Our residency builds on a foundation of well-established residency programs at RUHS and is designed to support and foster collaboration and integrative care in a safety net healthcare environment. Over 160,000 procedures were performed in the last year touching all modalities and specialties. Our patient population is extremely diverse and present with complex medical and socioeconomic challenges. 

The residency is centered at Riverside University Health System – Medical Center. RUHS is located in Moreno Valley, California and has 439 licensed beds and an ongoing Emergency Department expansion project. The Medical Center is a Level I Trauma Center with stroke designation and is moving towards becoming a clot retrieval facility. The hospital boasts a research office, CECORC - Comparative Effectiveness and Clinical Outcomes Research Center, that is available to support resident scholarly activity.

Moreno Valley, in Riverside County, is centrally located in Southern California with the advantages of reasonable proximity to the beaches and the mountains, at a lower cost of living. A nearby airport, Ontario International, allows for convenient travel options without the size and crowds of Los Angeles International airport.

The Internal Medicine staff is committed to the patients, the residents and the Medical Center we serve with ongoing attention to quality and detail in our patient's experience, appropriate supervision and resource utilization and to the active teaching in both conference settings and on rotations.

Thank you for your time and interest in our residency program. Should you have any additional questions please free to ask.


Roger Garrison 

 Roger Garrison, DO
 Program Director, Internal Medicine  Residency


Lynnetta Skoretz


Lynnetta Skoretz, MD
Associate Program Director, Internal Medicine Residency


Nikki Mittal, DO
Associate Program Director, Internal Medicine Residency



Brandon Nathaniel, MD
Associate Program Director, Internal Medicine Residency

Riverside University Health System Residency Tour
Riverside University Health System Residency Tour