Our Faculty
Our faculty strives to live up to their reputation of being the most supportive and approachable, while teaching residents to treat a diverse, under-served patient population. We focus on training outstanding, balanced residents, in a hospital and outpatient environment dedicated to teamwork, community service, work/life balance and physician wellness.
For information on our faculty, email us: [email protected]

Amaity V. Austin, MD, MPH, FAAFP, ABoIM
Program Director
- Dual board certified in Family Medicine and Integrative Medicine
- Faculty Director of the Integrative Medicine Track and Department Chair of Family Medicine at CHMC
- Committed to serving underserved patients in the community
- 20+ years of teaching experience
- Leads the community medicine curriculum
- Interests: Community Medicine, Bioethics, Global Health, Integrative Medicine, traveling, photography, ethnic cuisine, music and yoga

Amaity V. Austin, MD, MPH, FAAFP, ABoIM
Program Director
- Dual board certified in Family Medicine and Integrative Medicine
- Faculty Director of the Integrative Medicine Track and Department Chair of Family Medicine at CHMC
- Committed to serving underserved patients in the community
- 20+ years of teaching experience
- Leads the community medicine curriculum
- Interests: Community Medicine, Bioethics, Global Health, Integrative Medicine, traveling, photography, ethnic cuisine, music and yoga

Juan A. Silva, MD
Associate Program Director
- Medical School: University of California, Davis School of Medicine
- Residency: White Memorial Medical Center in Family Medicine
- He is a Family Physician and Founder of Mosaic Family Care
- Serves as core faculty member.
- He serves on multiple leadership committees at White Memorial Medical Center, East LA College Foundation, and Monterey Park Hospital
- He is a proud husband and father of 7 children and now a proud grandfather. He enjoys sporting events, and above all spending time with family and friends

Juan A. Silva, MD
Associate Program Director
- Medical School: University of California, Davis School of Medicine
- Residency: White Memorial Medical Center in Family Medicine
- He is a Family Physician and Founder of Mosaic Family Care
- Serves as core faculty member.
- He serves on multiple leadership committees at White Memorial Medical Center, East LA College Foundation, and Monterey Park Hospital
- He is a proud husband and father of 7 children and now a proud grandfather. He enjoys sporting events, and above all spending time with family and friends

Sandra Avila, MD
- Medical School: David Geffen School of Medicine, UCLA
- Residency: White Memorial Med Center Family Medicine Residency
- Serves as Didactics Director, preceptor outpatient faculty member, Nursing Home Attending
- Interests include care of geriatric patient, preventive care & diabetes management
- She’s received multiple teaching awards for teaching residents as a preceptor and lecturer.
- On her spare time enjoys traveling & good food

Sandra Avila, MD
- Medical School: David Geffen School of Medicine, UCLA
- Residency: White Memorial Med Center Family Medicine Residency
- Serves as Didactics Director, preceptor outpatient faculty member, Nursing Home Attending
- Interests include care of geriatric patient, preventive care & diabetes management
- She’s received multiple teaching awards for teaching residents as a preceptor and lecturer.
- On her spare time enjoys traveling & good food

Hector Castillo, MD
- Primary care physician and hospitalist
- Medical School: University of Southern California, Keck School of Medicine
- Residency: White Memorial Medical Center
- Serves as core faculty on the family medicine inpatient service;
- Serves on multiple clinical leadership committees at White Memorial Medical Center and AltaMed Health Services
- Husband and father of three wonderful children. He coaches flag football and enjoys time with his family.

Hector Castillo, MD
- Primary care physician and hospitalist
- Medical School: University of Southern California, Keck School of Medicine
- Residency: White Memorial Medical Center
- Serves as core faculty on the family medicine inpatient service;
- Serves on multiple clinical leadership committees at White Memorial Medical Center and AltaMed Health Services
- Husband and father of three wonderful children. He coaches flag football and enjoys time with his family.

Michelle Crespo, MD, MPH
- Medical School: University of California Irvine School of Medicine where she participated in the Program in Medical Education for the Latino Community (PRIME-LC) program
- MPH: University of California Los Angeles Fielding School of Public Health, focusing on health policy and management
- Residency: CHMC – Family Medicine Residency
- Core faculty member. Her interests include full-spectrum family medicine, addressing healthcare disparities, and advocating for increased health access.
- For fun, she likes to watch NBA games, attempt CrossFit workouts, and take trips to Disneyland.

Michelle Crespo, MD, MPH
- Medical School: University of California Irvine School of Medicine where she participated in the Program in Medical Education for the Latino Community (PRIME-LC) program
- MPH: University of California Los Angeles Fielding School of Public Health, focusing on health policy and management
- Residency: CHMC – Family Medicine Residency
- Core faculty member. Her interests include full-spectrum family medicine, addressing healthcare disparities, and advocating for increased health access.
- For fun, she likes to watch NBA games, attempt CrossFit workouts, and take trips to Disneyland.

Richard Hernandez, MD
Inpatient Director
- Medical School: Ross University School of Medicine
- Residency: Arrowhead Regional Medical Center in Colton, CA
- Serves as core faculty. His interests include working in the inpatient and integrating Point of Care Ultrasound into clinical practice.
- On his spare time, Dr. Hernandez is an avid weightlifter and cook and enjoys spending time with his wife and their three children at Disneyland

Richard Hernandez, MD
Inpatient Director
- Medical School: Ross University School of Medicine
- Residency: Arrowhead Regional Medical Center in Colton, CA
- Serves as core faculty. His interests include working in the inpatient and integrating Point of Care Ultrasound into clinical practice.
- On his spare time, Dr. Hernandez is an avid weightlifter and cook and enjoys spending time with his wife and their three children at Disneyland

C. Peony Khoo, MD
- Medical School: Saint Louis University
- Residency: UCLA Family Medicine
- Fellowship: Santa Clara Valley Medical Center Obstetrics Fellowship
- Serves as core faculty full spectrum practice, including OB/C-sections
- She is dedicated to teaching obstetrics and reproductive health, office procedures, and medical education.
- In her free time, enjoys volleyball, cooking, and running

C. Peony Khoo, MD
- Medical School: Saint Louis University
- Residency: UCLA Family Medicine
- Fellowship: Santa Clara Valley Medical Center Obstetrics Fellowship
- Serves as core faculty full spectrum practice, including OB/C-sections
- She is dedicated to teaching obstetrics and reproductive health, office procedures, and medical education.
- In her free time, enjoys volleyball, cooking, and running

Tracey Norton, DO
Clinical Medical Director
- Medical School: Kirksville College of Osteopathic Medicine
- Residency: California Hospital Family Medicine Residency Program
- Serves as Clinical Medical Director of the Eisner Health Family Medicine Center, an FQHC & continuity site for CHMC-FMRP
- She’s boarded in Family Medicine, Adolescent Medicine and majority of her medical career in graduate medical education and practice in full-scope medicine with underserved populations
- Free time: Reading, music, exercise and time with her family

Tracey Norton, DO
Clinical Medical Director
- Medical School: Kirksville College of Osteopathic Medicine
- Residency: California Hospital Family Medicine Residency Program
- Serves as Clinical Medical Director of the Eisner Health Family Medicine Center, an FQHC & continuity site for CHMC-FMRP
- She’s boarded in Family Medicine, Adolescent Medicine and majority of her medical career in graduate medical education and practice in full-scope medicine with underserved populations
- Free time: Reading, music, exercise and time with her family

Anthony Zamudio, PhD
Director of Behavioral Science
- Education: Ph.D. in clinical psychology from UCLA
- Provides teaching and supervision in behavioral health and resident wellness
- Multiple journal case study publications on patient encounters in primary care
- Member for the LACPA Ethics Committee and a former ethics member of the California Psychological Association
- He is an avid cyclist, having completed over twenty-one 7-day 550 mile AidsLifeCycle rides from San Francisco to Los Angeles

Anthony Zamudio, PhD
Director of Behavioral Science
- Education: Ph.D. in clinical psychology from UCLA
- Provides teaching and supervision in behavioral health and resident wellness
- Multiple journal case study publications on patient encounters in primary care
- Member for the LACPA Ethics Committee and a former ethics member of the California Psychological Association
- He is an avid cyclist, having completed over twenty-one 7-day 550 mile AidsLifeCycle rides from San Francisco to Los Angeles