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Julia C. Tchou, MD, PhD, FACS

Julia C. Tchou, MD, PhD, FACS Physician

Co-Director, Rena Rowan Breast Center Section Chief, of Breast Surgery Associate Professor of Clinical Surgery

Languages spoken:

  • Cantonese

Dr. Tchou is employed by Penn Medicine.

About Dr. Julia C. Tchou

Recognized by America's Top Doctors 2015 – 2018

Recognized by Best Doctors in America 2015, 2016

Recognized in Philadelphia magazine's May 2018 Top Docs issue

Patient Satisfaction Ratings

Patient Rating Breakdown

The Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our nationally-recognized Press Ganey Patient Satisfaction Survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.

Responses are measured on a scale of 1 to 5 with 5 being the best score.

Comments are submitted by patients and reflect their views and opinions. The comments are not endorsed by and do not necessarily reflect the views of Penn Medicine.

Overall Ratings

Clinical Specialties


  • Endocrine and Oncologic Surgery

Programs & Centers:

Board Certification:

  • Surgery, 2010

Clinical Expertise:

  • Breast Cancer
  • Breast Cancer Risk Reduction
  • Breast Cancer Screening
  • Breast Conserving Surgery (Lumpectomy)
  • Breast MRI
  • Breast Surgery
  • Cancer Prevention and Early Detection
  • Clinical Trials
  • Ductal Carcinoma in Situ (DCIS)
  • Inflammatory Breast Cancer (IBC)
  • Invasive (Infiltrating) Ductal Carcinoma (IDC)
  • Invasive (Infiltrating) Lobular Carcinoma (ILC)
  • Invasive Breast Cancer
  • Male Breast Cancer
  • Malignant Breast Disease
  • Molecular Breast Imaging
  • Nipple-Sparing Mastectomy (NSM)
  • Prophylactic Mastectomy
  • Sentinel Lymph Node Mapping and Biopsy
  • Skin-Sparing Mastectomy
  • Targeted Therapy
  • Triple-Negative Breast Cancer

Description of Clinical Expertise

Julia Tchou, MD PhD, FACS is Section Chief of Breast Surgery in the Division of Endocrine and Oncologic Surgery, and Co-Director of the Rena Rowan Breast Center at the Abramson Cancer Center of the Perelman School of Medicine at the University of Pennsylvania. Dr. Tchou’s practice focuses on the interdisciplinary management of patients with breast cancer: coordinating pre-operative evaluation, surgery and post-operative care of men and women with malignant breast diseases.

Practice Locations and Appointments

Insurance Accepted

  • Aetna US Healthcare
  • Cigna
  • Cigna HealthSpring
  • Clover Health Plan
  • CVS Health
  • Devon Health Services (Americare)
  • eLAP Services
  • Gateway Health Plan
  • Geisinger Health Plan
  • HealthAmerica / HealthAssurance, a Coventry Plan
  • HealthPartners
  • HealthPartners Medicare
  • HealthSmart
  • Highmark Blue Shield
  • Horizon Blue Cross Blue Shield of New Jersey
  • Humana / Choicecare
  • Independence Blue Cross (Keystone East)
  • Intergroup
  • Keystone First
  • Keystone First Medicare
  • Multiplan
  • NJ Medicaid
  • NJ Qualcare
  • Oxford Health Plan
  • PA Health and Wellness (Centene) Medicare
  • PA Medicaid
  • PA Medicare
  • Preferred Health Care/LGH
  • Provider Partners Health Plan
  • Rail Road Medicare / Palmetto GBA
  • Remedy Partners at Penn Medicine
  • Tricare
  • United Healthcare
  • UnitedHealthcare Community Plan
  • US Family Health Plan
  • Veterans Choice Program

Education and Training

Medical School: State University of New York at Stony Brook
Residency: Johns Hopkins Hospital
Fellowship: Johns Hopkins Hospital
Fellowship: Northwestern Medical Center


American Associate of Cancer Research, National American Cancer Society Institutional Research Grant at the Wistar Institute, National American College of Surgeons, National American Society of Clinical Oncology, National Association of Academic Surgery, National Association of Women Surgeons, National Breast Cancer Alliance, National Breast Cancer Research Program, Department of Defense Congressionally Directed Medical Research programs, National Cancer Center at the Wistar Institute, Local Developmental Pilot Project Grant Review, TREC, National DOD, CDRMP, Breast Cancer Research Program, National ECOG Breast Committee's Local-Regional Working Group, Local Global Breast Cancer Tumor Board, National NIH/NCI IMAT, National NIH/NCI Provocative Questions Initiative Grant Review panel member, National NIH/NCI UH2/UH3, National Scientist Reviewer, Department of Defense, CDRMP, Breast Cancer Research Program, National Society of Asian Academic Surgeons, National Society of Surgical Oncology, National The Wistar Institute Cancer Center,, Local Tumor Microenivronment and Metastasis Program, The Wistar institute, Philadelphia, PA, Local

Hospital Affiliation

Dr. Tchou is employed by Penn Medicine.

Hospital Privileges:

  • Hospital of the University of Pennsylvania: Has privileges to treat patients in the hospital.


Description of Research Expertise:

My research is focused on 1) developing strategies to mitigate breast cancer risk associated with metabolic syndrome by lifestyle modifications and by re-purposing some of the commonly prescribed medications to prevent breast cancer initiation and progression; 2) elucidating how novel immunotherapy such as CAR T therapy can induce epitope spreading and how combination therapy can unleash the anti-tumor effects of our own immune system; and 3) how we can use large data to enhance our understanding of tumor biology with the common goal of improving breast cancer outcomes.

Selected Publications:

Modarressi T, Levine MA, Tchou J, Khan AN: Gestational gigantomastia complicated by PTHrP-mediated hypercalcemia Journal of Clinical Endocrinology & Metabolism : 2018 (Epub).

Williams AD, Li YR, So A, Steel L, Carrigan E, Ro V, Nguyen J, Tchou J: The impact of aspirin use on breast cancer subtype and clinical course Journal of Surgical Research 230 : 71-79,2018.

Williams AD, Reyes SA, Arlow RL, Tchou J, De La Cruz LM: Is age trumping genetic profiling in clinical practice? Relationship of chemotherapy recommendation and oncotype DX recurrence score in patients aged < 50 years versus ≥ 50 years, and trends over time Annals of Surgical Oncology 25 (10): 2875-2883,2018.

Williams AD, So A, Tchou J: Overall survival is similar between women who seek care at one or more institutions after diagnosis of operable breast cancer in the community Surgical Oncology 27 (3): 387-391,2018.

Yoon-Flannery K, DeStefano LM, De La Cruz LM, Fisher CS, Lin LY, Coffua LS, Mustafa RE, Sataloff DM, Tchou JC, Brooks AD: Quality of life and sexual well-being after nipple sparing mastectomy: A matched comparison of patients using the breast Q Journal of Surgical Oncology 118 (1): 238-242,2018.

So Alycia, De La Cruz Lucy M, Williams Austin D, Bahng Joseph, Liao Geraldine, McDonald Elizabeth S, Fisher Carla S, Czerniecki Brian J, Sataloff Dahlia, Tchou Julia: The impact of preoperative magnetic resonance imaging and lumpectomy cavity shavings on re-excision rate in pure ductal carcinoma in situ-A single institution's experience Journal of Surgical Oncology 117 (4): 558-566,2018.

Tchou Julia, Zhao Yangbing, Levine Bruce L, Zhang Paul J, Davis Megan M, Melenhorst Jan Joseph, Kulikovskaya Irina, Brennan Andrea L, Liu Xiaojun, Lacey Simon F, Posey Avery D, Williams Austin D, So Alycia, Conejo-Garcia Jose R, Plesa Gabriela, Young Regina M, McGettigan Shannon, Campbell Jean, Pierce Robert H, Matro Jennifer M, DeMichele Angela M, Clark Amy S, Cooper Laurence J, Schuchter Lynn M, Vonderheide Robert H, June Carl H: Safety and efficacy of intratumoral injections of chimeric antigen receptor (CAR) T cells in metastatic breast cancer Cancer Immunology Research 5 (12): 1152-1161,2017.

Williams AD, Payne KK, Posey AD Jr, Hill C, Conejo-Garcia J, June CH, Tchou J: Immunotherapy for breast cancer: Current and future strategies Current Surgical Reports 5 : pii: 31,2017.

Mustafa Rose E, DeStefano Lauren M, Bahng Joey, Yoon-Flannery Kahyun, Fisher Carla S, Zhang Paul J, Tchou Julia, Czerniecki Brian J, De La Cruz Lucy M: Evaluating the risk of upstaging HER2-positive DCIS to invasive breast cancer Annals of Surgical Oncology 24 (10): 2999-3003,2017.

Williams Austin D, So Alycia, Synnestvedt Marie, Tewksbury Colleen M, Kontos Despina, Hsiehm Meng-Kang, Pantalone Lauren, Conant Emily F, Schnall Mitchell, Dumon Kristoffel, Williams Noel, Tchou Julia: Mammographic breast density decreases after bariatric surgery Breast Cancer Research & Treatment 165 (3): 565-572,2017.

Academic Contact Info

Division of Endocrine & Oncologic Surgery
3400 Civic Center Boulevard
Perelman Center, 3rd Floor West

Philadelphia, PA 19104-4283
Phone: (215) 615-7575
Patient appointments: 800-789-7366 (PENN)

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