About Us

Meet our Faculty

Tracey L. Norton, DO, FAAFP
Family Medicine Residency - Program Director

Dr. Norton was born in Ventura, California the eldest of 5 children and raised in a family that moved every two years as her engineer father followed the petroleum industry around the world. She spent years in Lima, Peru and Buenos Aires, Argentina, returning to the United States as a bilingual bicultural teen.

Dr. Norton received her Doctor of Osteopathic Medicine from Kirksville College of Osteopathic Medicine and completed a transitional internship year in Columbus, Ohio. Having financed medical school with a Uniformed Services Health Professions Scholarship from the US Public Health Service (US PHS), she decided to complete her service obligation as a general medical officer in the Indian Health Service.

Dr. Norton moved to rural Northeast Arizona for four years and provided full scope primary care medical services to people and families from the Navajo Nation and Hopi Tribe. At one point the US PHS sent her to Fort Smith, Arkansas on temporary duty assignment with other Spanish-speaking personnel to provide medical services to Cuban refugees during the Mariel Boatlift.

From Arizona she returned to Southern California to complete family medicine training at the USC/California Hospital Family Medicine Residency Program where she was chief resident. After residency she worked a summer in Nome, Alaska caring for Alaska Natives – the Inupiat.

Back in Los Angeles Dr. Norton worked as core family medicine residency faculty in area programs for nine years. She attended a faculty development fellowship at USC and focused on development and implementation of Women’s Health and Maternity curricula. She and a colleague provided medical services to one of the early residential Hospices in Hollywood. She made presentations to the medical staff on the vertical transmission of HIV in the early years of the HIV epidemic.

During the next decade, Dr. Norton started and directed a university-sponsored family medicine residency program at USC Keck School of Medicine. Ten classes completed training over the next 12 years.

Dr. Norton departed academic medicine to return to her rural medicine roots, working with two other family physicians and a nurse practitioner in a rural health center and critical access hospital on Catalina Island.

She returns to graduate medical education through the visionary commitment of Citrus Valley Health Partners and East Valley Community Health Center to collaborate and build a residency where physicians are inspired to develop expertise in family medicine and to dedicate themselves to the care of individuals, families, and communities especially those who are underserved.


Maili Velez-Dalla Tor, MD, FAAFP
Family Medicine Residency - Associate Program Director

Dr. Dalla Tor was born in San Juan, Puerto Rico and moved to Southern California at the age of nine. She graduated from UCLA with a bachelor’s degree in Physiological Science and attended the Charles R. Drew/UCLA Medical Education Program.

During her residency at the Memorial Family Medicine Program in Long Beach, CA, she was Co-Chief for both Quality Assurance and Gynecology.

After completing residency, Dr. Dalla Tor worked at Kaiser Permanente and then transitioned into academics. She joined the PIH Health Family Medicine Residency Program as faculty where she chaired the Clinical Competency Committee and helped to develop their Chronic Disease and Palliative Care Track.

Dr. Dalla Tor also worked at the Pomona Valley Hospital Medical Center Family Medicine Residency Program (PVHMC FMRP) as their Associate Program Director. At the PVHMC FMRP she developed the Clinical Competency Committee and served as the Medical Student Clerkship Director. She is board-certified in Family Medicine as well as Hospice and Palliative Medicine.

Dr. Dalla Tor enjoys teaching medical students and residents and has a special interest in resident and physician wellness, pediatrics, women’s health, geriatrics, nutrition and obesity. Dr. Dalla Tor is married and has three children. She enjoys reading, arts and crafts, hiking, traveling and kayaking. She is excited to return to academic medicine and to help build a residency committed to serve our community through compassionate, quality care.


Anna Pavlov, PhD
Family Medicine Residency - Director, Behavioral Medicine

Dr. Pavlov was born in Whittier, California and grew up in Torrance. She studied psychology at UCLA and received her doctorate in clinical psychology from the California School of Professional Psychology, Los Angeles. Dr. Pavlov completed a two year fellowship in Primary Care Health Psychology at Genesys Regional Medical Center in Flint, Michigan, affiliated with Michigan State University School of Medicine and afterward joined the faculty in the family medicine residency program.

Returning to California, Dr. Pavlov served as the Director of Behavioral Medicine and Addiction Medicine at the Pomona Valley Family Medicine Residency Program. She has a special interest in psycho-oncology, perinatal mental health and resident & physician wellness. She has been active in many scholarly activities and co-edited, Cinemaeducation: A Comprehensive Guide to Using Film in Medical and Graduate Education.

Dr. Pavlov enjoys spending time with her family and friends. She is an avid film and theatergoer, practices yoga and loves international travel. She is proud to have joined Citrus Valley Health Partners and to be a part of launching the Family Medicine Residency Program.


Chinhnam Hathuc, DO
East Valley Community Health Center – Chief Medical Officer

Chinhnam Hathuc, D.O. was born and raised in Southern California where he lived with his family in the Inland Valley. At the age of 16, he received a scholarship and left home to attend Simon’s Rock College of Bard in Great Barrington, Massachusetts. He graduated college at 19 years old and took a research position at the University of Minnesota, Twin Cities. After two years of Neuroscience research, and a good amount of soul-searching, he decided to pursue a career in medicine and attended Touro University in Northern California.

Dr. Hathuc had the opportunity to share his medical school experience with his brother, as they were housemates and schoolmates. When not studying for exams, they both spent their summers volunteering for Camp Footprints – a non-profit organization that serves physically, mentally, and/or socially economically challenged children. Volunteering at Camp Footprints is still a passion for both of them to this day.

After graduating medical school, Dr. Hathuc returned home to Southern California and completed his Family Medicine residency at Pacific Hospital in Long Beach, California. During his residency program, he developed a passion for community medicine as he worked in a medically underserved area. He wanted to put his efforts into community medicine because he saw a great need for quality health care for those patients that are most vulnerable.

Upon completion of his residency program and board certification in Family Medicine, Dr. Hathuc joined East Valley Community Health Center- a federally qualified health center that serves the San Gabriel and Pomona Valleys. He works there as a Lead Physician and the Chief Medical Officer for their four community clinics. He is also an Attending Physician and the Osteopathic Medicine Director for the Family Medicine residency program at College Hospital in Long Beach, California.

Through the partnership between East Valley Community Health Centers and Citrus Valley Health Partners, Dr. Hathuc hopes to give back to the communities that helped shape his career and inspire future Family Medicine physicians to go into community medicine.


Scott Nass, MD, MPA, FAAFP, AAHIVS
Family Medicine Residency - Core Faculty

Dr. Nass was born and raised in the foothills of the Appalachian Mountains in northeastern Kentucky. He ventured off to become well rounded by obtaining undergraduate degrees in psychology and English from Bradley University, as well as a Master of Public Affairs from Indiana University-Bloomington.

After working for not-for-profit organizations in center city Chicago and Los Angeles, he recognized an opportunity to combine his love for policy and advocacy with a career in medicine, and then proceeded to earn his medical degree from the Charles R. Drew/UCLA Medical Education Program.

He completed Family Medicine residency at Ventura County Medical Center, followed by fellowships in faculty development at Ventura and the University of North Carolina-Chapel Hill. After residency, he worked full time as a hospitalist in Ventura County before serving as Associate Program Director and Director of the Family Medicine Inpatient Service for the Eisenhower Medical Center Family Medicine Residency.

Dr. Nass is board certified in Family Medicine and is credentialed as an HIV Specialist™ by the American Academy of HIV Medicine. He enjoys practicing broad-spectrum Family Medicine, including hospital medicine, transgender health, medication-assisted treatment of opioid use disorder, dermoscopy, and multiple inpatient and outpatient procedures (including no-scalpel vasectomies).

He is an active advocate for health equity and was selected for the inaugural class of Leaders for Health Equity fellows at George Washington University. He is a member of the board of directors for GLMA: Health Professionals Advancing LGBT Equality, and he participates in various leadership roles within the American Academy of Family Physicians, the California Academy of Family Physicians, and the Society of Hospital Medicine.


Supporting Faculty

  • Director of Pediatrics Outpatient – Aarti Kulshrestha, M.D

  • Director of Pediatrics Inpatient – Zacharia Y Reda, MD

  • Director of Inpatient Family Medicine – Jeff Shapiro, MD

  • Director of Newborn and NICU – Bruce Sindel, MD

  • Directors of OB – Anna Leung, MD & Jason S Begley, MD

  • Director of Emergency Medicine – Edward M Gentile, MD

  • Director of Surgery - Raffaele Corbisiero, MD, FACS