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John Bernard Wojcik, MD, PHD

John Bernard Wojcik, MD, PHD Physician

Assistant Professor of Pathology and Laboratory Medicine at the Hospital of the University of Pennsylvania

Dr. Wojcik is employed by Penn Medicine.

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Clinical Specialties


  • Pathology and Laboratory Medicine

Programs & Centers:

Board Certification:

  • Pathology - Anatomic Pathology, 2015

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
  • Homestead Smart Health Plans
  • 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: University of Chicago
Residency: Massachusetts General Hospital
Residency: Hospital of the University of Pennsylvania
Fellowship: Pennsylvania Hospital


American Society for Clinical Pathology, National American Society for Mass Spectrometry, National Connective Tissue Oncology Society, National International Society of Bone and Soft Tissue Pathology, International United States and Canadian Academy of Pathology, National United States Human Proteome Organization, National World Human Proteome Organization, International

Hospital Affiliation

Dr. Wojcik is employed by Penn Medicine.

Hospital Privileges:

  • Hospital of the University of Pennsylvania: Has privileges to treat patients in the hospital.
  • Penn Presbyterian Medical Center: Has privileges to treat patients in the hospital.
  • Pennsylvania Hospital: Has privileges to treat patients in the hospital.


Description of Research Expertise:

Proteomic characterization of human sarcomas, Mass spectrometry of human tissue samples, Epigenetics, Histone post-translational modification, Diagnostic markers for sarcomas

Selected Publications:

Marchione DM, Lisby A, Viane AN, Santi M, Nasrallah, M, Wang L, Williams EA, Larque AB, Chebib I, Garcia BA and Wojcik JB.: Histone H3K27 Dimethyl Loss is Highly Specific for malignant peripheral nerve sheath tumor and Distinguishes True PRC2 Loss from Isolated H3K27 Trimethyl Loss. Modern Pathology : 2019.

Kulkarni A, Wojcik J, Chougule A, Arora K, Chittampalli Y, Mullen J, Chebib I, Nielsen P, Rivera M, Ting D, Deshpande V.: MDM2 RNA ISH for the diagnosis of atypical lipomatous tumor: A study evaluating DNA, RNA and protein expression. American Journal of Surgical Pathology 43 (4): 2019.

Marchione DM, Ilieva I, Pappin DJ, Wilson JP, Wojcik JB.: HYPER-sol: flash-frozen results from FFPE tissue specimens for clinical proteomics. BioRxiv : 2019.

Jaramillo CJ, Wojcik J, Weber K, and Sebro R: Imaging and histological appearance of pleomorphic hyalinizing angiectatic tumors: A case series and literature review Oncol Lett. 15 (4): 4720–4730,2018.

Wojcik J, Sidoli S, Cooper K Garcia BA: Polycomb loss enhances oncogenesis but leads to therapeutic vulnerabilities in malignant peripheral nerve sheath tumors US HUPO Annual Conference, Minneapolis, MN : 2018.

Wojcik JB, Sajed D, Oliva E, Chiang S, Garcia B.: Epigenetic Dysregulation Unites Ossifying Fibromyxoid Tumor and Endometrial Stromal Sarcoma Pathogenesis USCAP Annual Meeting, Vancouver, BC, Canada : 2018.

Wojcik J, Sidoli S, Cooper K Garcia BA: Integrated proteome and epigenetic analysis reveals cross-talk between chromatin and cancer pathways in malignant peripheral nerve sheath tumors. Clinical Cancer Research 24 (2 Supplement): 2018.

Stitzlein R, Balamuth N, Wojcik J, Sebro R, Weber K: Team Approach: Osteosarcoma of the Distal Part of the Femur in Adolescents JBJS Reviews 5 (12): e5,2017.

Guannan Wang, Ming Wu, Martha A. Maloneyhuss, John Wojcik, Amy C. Durham, Nicola J. Mason, David B. Roth: Actionable mutations in canine hemangiosarcoma PLoS One 12 (11): e0188667,2017.

Wojcik J and Cooper, KC: Epigenetic Alterations in Bone and Soft Tissue Tumors. Adv Anat Pathol. 24 (6): 362-371,2017.

Academic Contact Info

818 S 48th St
Philadelphia, PA 19143

Department of Pathology and Laboratory Medicine
Hospital of the University of Pennsylvania
3400 Spruce Street, 6 Founders

Philadelphia, PA 19104
Patient appointments: 800-789-7366 (PENN)