Brenda Ng, M.D.

Brenda Ng, M.D.

Brenda W. Ng, M.D. most recently served as a pathologist at El Camino Hospital in Mountain View, CA, where she has was an attending pathologist from 2003 and served as the Medical Director of Cytopathology from 2006 to 2024. She earned her B.A. in Physiology from the University of California, Berkeley, and her M.D. from the University of Southern California.

Dr. Ng completed her residency in Anatomic and Clinical Pathology, followed by fellowships in Surgical Pathology and Cytopathology at UCSF. She holds certifications from the American Board of Pathology in both Anatomic and Clinical Pathology, and a subspecialty in Cytopathology. Her research includes studies in geriatric physiology, oncogene amplification, and ovarian tumors. Dr. Ng has been recognized with numerous awards for academic excellence and has published several articles in prominent medical journals.

Medical Degree:

University of Southern California

Residency:

University of California – San Francisco

Fellowship:

Surgical Pathology and Cytopathology fellowships – UCSF

Board Certification:

Anatomic and Clinical Pathology, Cytopathology

Special Interests:

Geriatric physiology


Ruth Zhang, M.D.

Ruth Zhang, M.D.

Dr. Ruth Zhang, MD is a pathologist based in San Francisco, California, with a specialization in gastrointestinal and hepatobiliary pathology. She completed her B.S. in Biology at Duke University and earned her M.D. from the Keck School of Medicine at the University of Southern California. Dr. Zhang underwent residency and fellowship training at the University of California, San Francisco, where she also served as Chief Resident in the Department of Pathology.

Her research focuses on pathology and laboratory medicine, with numerous peer-reviewed publications exploring topics like gastrointestinal cancer and immunomodulation in osteogenesis. Dr. Zhang has received multiple awards, including the Nancy E. Warner, MD Award, and has presented her work at national conferences. She holds medical licensure in California and is an active member of several professional societies, including the American Society for Clinical Pathology and the United States and Canadian Academy of Pathology.



Medical Degree:

USC Keck School of Medicine, Los Angeles, CA

Residency:

University of California – San Francisco

Fellowship:

Surgical, Gastrointestinal, and Hepatobiliary Pathology – UCSF


Thu Tran, M.D.

Thu Tran, M.D.

Dr. Tran is a highly accomplished pathologist specializing in anatomic and clinical pathology, with extensive expertise in genitourinary pathology. Dr. Tran holds board certification from the American Board of Pathology and is licensed to practice in California. Dr. Tran’s education includes a fellowship in genitourinary pathology at Indiana University School of Medicine, a surgical pathology fellowship, and an anatomic and clinical pathology residency at Harbor-UCLA Medical Center. She earned her medical degree from the University of California, San Diego, and a Bachelor of Science in Genetics from UC Davis, where she graduated summa cum laude.

Professionally, Dr. Tran has served as a staff pathologist at El Camino Pathology Medical Group and was a partner and board member at Vista Pathology. She has held academic positions, including Assistant Professor at the University of Pittsburgh, where she contributed to teaching and research in genitourinary pathology. Her work has been widely recognized, with numerous awards and published research, particularly in the areas of renal tumors and prostate cancer. Dr. Tran is known for her commitment to advancing pathology practice and mentoring medical students and residents.

Dr. Tran’s contributions extend beyond clinical practice to leadership roles in case management, quality control, and efficiency improvements within pathology groups, as well as manuscript reviews for academic journals. Their work exemplifies excellence in both patient care and academic research.

Medical Degree:

UC San Diego

Residency:

Harbor-Univeristy of California, Anatomic and Clinical pathology

Fellowship:

Genitourinary Pathology, Adrenal Pathology – Indiana University

Board Certification:

Anatomic and Clinical Pathology, Cytopathology

Special Interests:

Genitourinary pathology


Natalie Patel, M.D.

Natalie Patel, M.D.

Dr. Natalie Patel, MD is a board-certified anatomic and clinical pathologist with an active California medical license. She served as an attending physician, Director of Microbiology, and Treasurer at El Camino Medical Group Inc., based at El Camino Health in Mountain View, CA. 

Dr. Patel earned her doctorate from Saint George’s University, graduating Magna Cum Laude, and holds a Bachelor of Science in Biomedical Engineering from the New Jersey Institute of Technology. She completed her residency in anatomic and clinical pathology at Yale-New Haven Hospital, where she was elected Chief Resident, followed by fellowships in surgical and gastrointestinal/liver pathology.

With extensive experience in pathology, Dr. Patel has authored multiple peer-reviewed publications and book chapters. She actively participates in professional associations such as the College of American Pathologists and the American Society for Clinical Pathology. She is also involved in community service and holds fluency in English and conversational skills in Gujarati.

Medical Degree:

Saint George’s University

Residency:

Chief Resident, Yale-New Haven Hospital

Fellowship:

Gastrointestinal/Liver Pathology, Yale-New Haven Hospital
Surgical Pathology, UC San Diego

Board Certification:

California State Board of Medicine
Anatomic and Clinical Pathology Board


William Rogers, M.D.

William Rogers, M.D.

Will received his BS from Stanford University, followed by his MD from The University of Southern California Keck School of Medicine. He then completed his Anatomic and Clinical Pathology residency at Stanford University.  Also at Stanford he completed two subspecialty fellowships: one in Gynecologic and Breast Pathology and one in Cytopathology. He is board certified in Anatomic and Clinical Pathology and Cytopathology.

Will serves as the Enterprise Medical Director of Pathology and Clinical Laboratory at El Camino Health (Mountain View and Los Gatos campuses).  He is the medical director of Blood Bank/Transfusion service and is Co-Chair of the El Camino Hospital Transfusion Safety Committee.

Will is joined in life by 1 amazing wife, 2 fantastic boys, 1 dog, 4 cats, 3 tortoises, a boat, and about 20 fishing rods (not that he really knows how to fish well).

Medical Degree:

USC Keck School of Medicine, Los Angeles, CA

Residency:

Stanford University

Fellowship:

Surgical, GYN, and Breast Pathology, Cytopathology – Stanford University

Board Certification:

Anatomic and Clinical Pathology, Cytopathology

Special Interests:

Gynecologic Pathology, Cytopathology, General surgical pathology, Breast Pathology


Sebastian Sasu, M.D.

Sebastian Sasu, M.D.

Dr. Sebastian Sasu is board certified in Anatomic and Clinical Pathology, and Hematopathology. Prior to joining Peninsula Pathologists Medical Group, Sebastian was the Pathology Department Chair and Anatomic Pathology Medical director of the Alta Bates Summit Medical Center Ashby and Summit campuses in Berkeley and Oakland, since 2016. Sebastian has a broad range of experience and expertise in both anatomic and clinical pathology, ancillary diagnostic tools such as flow cytometry, fluorescence in situ hybridization and molecular testing, as well as laboratory-based research and biomarker development.
Sebastian completed his anatomic and clinical pathology residency at the University of Southern California LAC+USC medical center, and a hematopathology fellowship at UCLA, working with renown hematopathologists such as Bharat Nathwani, Russel K. Brynes and Jonathan Said.
Sebastian resides in San Francisco’s vibrant Mission District, with his wife and two daughters (one of which is currently off to college). He loves the outdoors, Chinese martial arts, live music (including opera and musicals), good food and wine.

Medical Degree:

Iuliu Hatieganu University of Medicine and Pharmacy, Cluj, Romania

Residency:

University of Southern California, LAC-USC Medical Center, Los Angeles

Fellowship:

Hematopathology, University of California- Los Angeles

Board Certification:

Anatomic and Clinical Pathology, Hematopathology

Special Interests:

Hematopathology including flow cytometry, FISH and molecular diagnostics, Surgical Oncologic                                                                   Pathology with a focus on Breast, Gynecologic and Gastro-Intestinal Pathology


Sarah Calkins, M.D.

Sarah Calkins, M.D.

Prior to joining Peninsula Pathologists, Sarah was an Associate Professor of Pathology at the University of California San Francisco. As part of the Cytopathology division, she staffed the pathologist-performed Fine Needle Aspiration Biopsy Clinic, where she used her expertise to perform palpation and ultrasound-guided FNAs with a focus on maximizing the diagnostic potential of small samples. She also has a subspecialty focus in head and neck pathology with interests in salivary gland tumors and HPV-related diseases. One of her many roles as an educator included serving Anatomic and Clinical Pathology Residency Program Director from 2017 until joining PPMG in 2023.  She looks forward to bringing her clinical and leadership skills to this exciting pathology practice.

Sarah earned her MD from the University of Toledo where she also participated in the Post-Sophomore Pathology Fellowship Program and received the American Society for Clinical Pathology Award for Excellence and Achievement. She then completed Anatomic and Clinical Pathology Residency, Surgical Pathology Fellowship, and Cytopathology Fellowship at UCSF. While training, she was awarded the Anatomic Pathology Fellow Teaching Award.

Sarah lives in San Francisco.  She enjoys hiking, live music, wine country, trying new restaurants, park days, and anything with her two dogs.

Medical Degree:

University of Toledo College of Medicine

Residency:

Anatomic and Clinical Pathology – University of California San Francisco

Fellowship:

Surgical Pathology – University of California San Francisco

Board Certification:

Anatomic and Clinical Pathology, Cytopathology

Special Interests:

Cytopathology, Small Biopsies, Head and Neck Pathology, Thyroid Pathology, Small Samples for Advanced Molecular Testing


Jenny Kuo, M.D.

Jenny Kuo, M.D.

Dr. Jenny Kuo is a skilled pathologist at Peninsula Pathologists in the San Francisco Bay Area. With a medical degree and residency training in pathology, she provides accurate diagnostic services for various medical conditions. She is dedicated to staying current with the latest advancements in her field and is a trusted member of the medical community. In her free time, she enjoys hiking and exploring California’s natural landscapes.

Medical Degree:

University of Southern California-School of Medicine

Residency:

University of Southern California-School of Medicine

Fellowship:

Surgical Pathology-University of Southern California-School of Medicine

Fellowship:

Transfusion Medicine-Stanford Hospital and Blood Center

Board Certification:

Anatomic and Clinical Pathology, Transfusion Medicine

Special Interests:

Anatomic and Clinical Pathology


Thuy Nguyen, M.D.

Thuy Nguyen, M.D.

Dr. Thuy Nguyen is a board-certified anatomic and clinical pathologist with fellowship training in gastrointestinal and hepatobiliary pathology. She serves as Medical Director for Laboratory and Pathology and Transfusion Committee Chair at Sutter Health’s Mills-Peninsula Medical Center (MPMC). She is also a managing partner and board member for Peninsula Pathologists Medical Group (PPMG) Inc. She holds active medical staff appointments at Sutter Health’s MPMC,  Palo Alto Medical Foundation, San Mateo County Hospital and Clinics and Dignity Health’s Sequoia Hospital.

Thuy received her Medical Doctorate (M.D.) from the University of Minnesota.  She then completed anatomic and clinical pathology residency and surgical pathology fellowship at the University of California San Francisco (UCSF).  She also completed fellowship training in gastrointestinal and hepatobiliary pathology fellowship program under Dr. Linda Ferrell.

Thuy resides in San Francisco with her family (husband, 1 child and 1 dog). She and her family enjoy live music, park days, museums, and zoos. She and her husband are gastronomes always on the look-out for great restaurants and new recipes to try. Thuy is also a proficient baker that dabbles in cake decorating in her free time.

Medical Degree:

University of Minnesota Medical School

Residency:

University of California-San Francisco

Fellowship:

Surgical Pathology – University of California-San Francisco

Fellowship:

Gastrointestinal and Hepatobiliary Pathology – University of California-San Francisco

Board Certification:

Anatomic and Clinical Pathology

Special Interests:

Gastrointestinal, Liver, Anatomic and Clinical Pathology


Sourav Ray, M.D.

Sourav Ray, M.D.

Dr. Sourav Ray is a Board-Certified Anatomic and Clinical Pathologist with subspecialty (dual board) certification in Dermatopathology.  He serves as Vice-Chair of Pathology for Sutter Health’s MPMC Division and oversees anatomic pathology quality assurance.  In his role as liaison to the Patient Safety and Quality committee, he also has extensive experience in integrated multidisciplinary diagnostics with a focus on tumor boards and serves on the system-wide Integrated Network Cancer Program.

Prior to joining PPMG Sourav was a resident and fellow at the University of Pittsburgh Medical Center during a golden era when he was fortunate enough to learn directly from the world’s foremost pathologists such as E. Leon Barnes, Steven H. Swerdlow, and Samuel Yousem.  

Sourav resides in San Francisco with his partner, 3 kids, and a dog.  He has a special interest in beer, tennis, and the intersection of Eastern and Western forms of music (not necessarily in that order).

Medical Degree:

Albany Medical College

Residency:

University of Pittsburgh-School of Medicine

Fellowship:

Dermatopathology-University of Pittsburgh-School of Medicine

Board Certification:

Anatomic Pathology, Clinical Pathology, and Dermatopathology

Special Interests:

Cutaneous diseases, soft tissue tumors, lymphomas