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Liza O. Thalheimer, M.D., FACS

General Summary

Liza O. Thalheimer, M.D., FACS’s goal is to provide individualized quality care, empathy and support to each patient. This includes patients with both malignant and benign disease processes.


  • Fellowship in Breast Surgical Oncology
    Bryn Mawr Hospital, Bryn Mawr, PA
  • Residency in General Surgery
    Charleston Area Medical Center, Charleston, WV
  • Internship in General Surgery
    West Virginia University, Charleston, WV
  • Medical Doctorate
    West Virginia University, Morgantown, WV

Accolades & Memberships

  • American College of Surgeons
  • American Society of Breast Surgeons
  • Doctor of the Month, Houston Methodist Willowbrook Hospital (2018)
  • Fellow of the American College of Surgeons
  • Lynn Sage Symposium Scholar, Lynn Sage Breast Cancer Symposium (2015)
  • Resident of Excellence, Charleston Area Medical Center (2015)

Surgery Locations

  • HCA Houston Healthcare Tomball
  • Houston Methodist Willowbrook Hospital
  • TOPS Surgical Specialty Hospital
  • HCA Houston Healthcare North Cypress

Medical Practice

  • Houston Methodist The Woodlands Hospital, Breast Surgical Oncologist, The Woodlands, TX (April 2018)
  • Houston Methodist Willowbrook Hospital, Breast Surgical Oncologist, Houston, TX (September 2016)
  • Houston Methodist Willowbrook Hospital, Multidisciplinary Breast Conference Program Director, Houston, TX (January 2017 – January 2021)
  • Houston Methodist The Woodlands Hospital, Multidisciplinary Breast Conference Program Director, Houston, TX (May 2018 – January 2021)

Office & Outpatient

  • 2D and 3D Diagnostic Mammography
  • 2D and 3D Screening Mammography
  • Abscess Drainage
  • Breast MRI
  • Breast Sonography and Ultrasound
  • Clinical Breast Examination
  • Contrast Enhanced Mammogram
  • Cyst Aspiration
  • Genetic Testing
  • High Risk Management
  • L-DEX Lymphedema Assessment and Measurement
  • Lymphedema Screening and Prevention Program
  • Mediport Removal
  • MRI Guided
  • Needle Biopsy of Breast Lesions - US Guided
  • Non-Surgical, Image-Guided Breast Biopsies
  • Partial Breast Radiation Catheter Insertion (SAVI, Contura, Mammosite)
  • Referral to Breast Radiology for Image Guide Biopsies
  • Screening for High Risk Patients
  • Second Opinion Consultation
  • Skin Biopsies
  • Stereotactic Needle Biopsies
  • Ultrasound Guided

Surgical Procedures

  • Localized Excisional Biopsy (Savi Scout, Radioactive Seed, Magseed)
  • Axillary Lymph Node Dissection
  • Excision of Chest Wall Tumors
  • Excisional Breast Biopsy
  • Hidden Scar Lumpectomy & Mastectomy
  • Hidden Scar Surgery
  • Lumpectomy - Partial Mastectomy - Quadrantectomy
  • Mastectomy
  • Nipple Duct Excision-Exploration
  • Nipple Sparing Mastectomy
  • Oncoplastic Partial Mastectomy
  • Oncoplastic Tissue Rearrangement
  • Radioactive and-or Reflector Guided Localized Excisional Biopsy
  • Skin Sparing Mastectomy
  • Total “Going Flat” Mastectomy