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Aaron D. Bleznak, MD, MBA, FACS, FSSO

Aaron D. Bleznak, MD, MBA, FACS, FSSO Physician

Medical Director, Breast Program, Ann B. Barshinger Cancer Institute

Dr. Bleznak is employed by or has a contract with Penn Medicine Lancaster General Health.

About Dr. Aaron D. Bleznak

I am an oncologic surgeon specializing in breast surgery. Since 2007, I have been recognized as a Best Doctor in America and a Top Doctor.

Prior to joining Lancaster General Health, I practiced as a breast surgeon for the Geisinger Clinic, Lehigh Valley Health Network, and Sentara Healthcare (in Virginia), serving as a physician leader at the latter two organizations.

While at Lehigh Valley Health Network I was the director of the breast surgical oncology fellowship program, and I have held clinical teaching appointments at Sidney Kimmel Medical College—Thomas Jefferson University, Penn State College of Medicine, University of South Florida School of Medicine, and Eastern Virginia Medical School.

I have been involved in research on sentinel lymph node biopsy, accelerated partial breast irradiation, and cryoablation for breast cancer. I have been an author of more than two dozen papers, book chapters, and abstracts and I have had the opportunity to present at the annual meetings of the Society of Surgical Oncology, the American Society of Breast Surgeons, and the American College of Surgeons. I am a surveyor for cancer and breast cancer program accreditation for the Commission on Cancer and the National Accreditation Program for Breast Centers; in addition, I am a frequent lecturer for the Commission on Cancer.

I am a member of the American College of Physician Executives and received my MBA from the Isenberg School of Management of the University of Massachusetts.

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 Lancaster General Health.

Overall Ratings

Clinical Specialties


  • Endocrine and Oncologic Surgery

Board Certification:

  • Surgery, 1990

Additional Certification:

  • Breast Ultrasound, 2004

Clinical Expertise:

  • Axillary Mass
  • Breast Cancer Follow Up
  • Breast Cancer Genetics
  • Breast Conservation
  • Breast Hyperplasia
  • Cystosarcoma Phyllodes
  • Dysplasia of Breast
  • ER Negative Breast Cancer
  • ER Positive Breast Cancer
  • Fine Needle Aspiration
  • Hereditary Breast and Ovarian Cancer
  • Infusaport Placement
  • Lobular Neoplasia
  • Lymph Node Biopsy
  • Mastectomy
  • Mediports
  • Metastatic Axillary Cancer
  • Metastatic Breast Cancer
  • Microcalcifications
  • Nipple Diseases
  • Oncologic Reconstruction
  • Port
  • Quadrantectomy
  • Sentinel Lymph Node Biopsy
  • Triple-Negative Breast Cancer
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Practice Locations and Appointments

Insurance Accepted

  • Aetna US Healthcare
  • Amerihealth Caritas
  • Amerihealth Caritas Medicare
  • Capital Blue Cross
  • Cigna
  • Cigna HealthSpring
  • Devon Health Services (Americare)
  • eLAP Services
  • Gateway Health Plan
  • Geisinger Health Plan
  • HealthAmerica / HealthAssurance, a Coventry Plan
  • HealthPartners
  • HealthPartners Medicare
  • Highmark Blue Shield
  • Highmark Blue Shield Medicare
  • Humana / Choicecare
  • Humana / Medicare
  • Independence Blue Cross (Keystone East)
  • Intergroup
  • Keystone First
  • Multiplan
  • PA Health and Wellness (Centene) Medicare
  • PA Medicaid
  • PA Medicare
  • Preferred Health Care/PA Preferred Health Networks
  • Rail Road Medicare / Palmetto GBA
  • Significa Benefit Services (fka EHP)
  • Tricare
  • United Healthcare
  • UnitedHealthcare Community Plan
  • UPMC Health Plan
  • Veterans Choice Program
  • Vibra Health Plan

Education and Training

Medical School: Sidney Kimmel Medical College
Residency: Albert Einstein - Montefiore Medical Center

Hospital Affiliation

Dr. Bleznak is employed by or has a contract with Penn Medicine Lancaster General Health.

Hospital Privileges:

  • Lancaster General Hospital: Has privileges to treat patients in the hospital.