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Kojo S. J. Elenitoba-Johnson, MD Physician

Peter C. Nowell, M.D. Professor

Dr. Elenitoba-Johnson is employed by Penn Medicine.

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  1. He or she is not employed by Penn Medicine.
  2. He or she does not see patients in a medical practice setting.
  3. He or she sees patients but has not yet received the minimum 30 patient satisfaction reviews in the past 12 months, ensuring that the rating is statistically reliable and a true reflection of patient satisfaction.

Clinical Specialties


  • Pathology and Laboratory Medicine

Programs & Centers:

  • Precision and Computational Diagnostic Services

Board Certification:

  • Pathology - Anatomic Pathology, 1996
  • Pathology - Hematology, 1998
  • Pathology - Molecular Genetic Pathology, 2001

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 Lagos
Residency: Brown University, Rhode Island Hospital
Fellowship: National Cancer Institute


American Association for Cancer Research, National American Society for Biochemistry and Molecular Biology, National American Society for Clinical Pathology, National American Society for Investigative Pathology, National American Society of Clinical Investigation, National American Society of Hematology, International Association for Molecular Pathology, International Food and Drug Administration (FDA), National International Lymphoma Study Group, International Interurban Clinical Club, National Lymphoma Research Foundation, National Michigan Society of Pathologists, Local National Cancer Policy Forum of The National Academies of Sciences, Engineering and Medicine, National National Institutes of Health, National Cancer Institute, National Society for Hematopathology/European Association for Haematopathology, International United States and Canadian Academy of Pathology, International United States and Canadian Academy of Pathology, International

Hospital Affiliation

Dr. Elenitoba-Johnson 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.


Selected Publications:

Lim MS, Beyer T, Babayan A, Bergmann M, Brehme M, buyx A, Czernin J, Egger G, Elenitoba-Johnson KSJ, Gückel B, Jačan A, Haslacher H, Hicks RJ, Kenner L, Langanke M, Mitterhauser M, Pichler BJ, Salih HR, Schibli R, Schulz S, Simecek J, Simon J, Soares MO, Stelzl U, Wadsak W, Zatloukal K, Zeitlinger M, Hacker M.: Advancing Biomarker Development Through Convergent Engagement: Summary Report of the 2nd International Danube Symposium on biomarker Development, Molecular Imaging and Applied Diagnostics. Mol Imaging Biol. : 2019.

Elenitoba-Johnson KSJ: Functional profiling to improve therapy in TCL Blood 7 (133): 504-506,2019.

Rolland DCM, Lim MS, Elenitoba-Johnson KSJ: Mass spectrometry and proteomics in hematology. Seminars in Hematology 56 (1): 52-57,2019.

van Rhee F, Voorhees P, Dispenzieri A, Fossa A, Srkalovic G, Ide M, Munshi N, Schey S, Streetly M, Pierson SK, Partridge HL, Mukherjee S, Shilling D, Stone K, Greenway a, Ruth J, Lechowicz MJ, Chandrasakan S, Jayanthan R, Jaffe ES, Leitch H, Penmaraju N, Chadburn A, Lim MS, Elenitoba-Johnson KSJ, Krymskaya V, Goodman A, Hoffman C, Zinzani PL, Ferrero S, Terriou L, Sato Y, Simpson D, Wong R, Rossi JF, Nasta S, Yoshizaki K, Kurzrock R, Uldrick TS, Casper C, Oksendhendler E, Fajgenbaum DC.: International, Evidence-based Consensus Treatment Guidelines for the Management of Idiopathic Multicentric Castleman Disease. Blood 132 (20): 2115-2124,2018.

Aggarwal C, Thompson JC, Black TA, Katz SI, Fan R, Yee SS, Chien AL, Evans TL, Bauml JM, Aley EW, Ciunci CA, Berman AT, Cohen RB, Lieberman DB, Majmundar KS, Savitch SL, Morrissette JJD, Hwang WT, Elenitoba-Johnson KSJ, Langer CJ, Carpenter EL.: Clinical Implications of Plasma-Based Genotyping With the Delivery of Personalized Therapy in Metastatic Non-Small Cell Lung Cancer. JAMA Oncol : 2018.

Van Arnam JS, Lim MS, Elenitoba-Johnson KSJ: Novel Insights into the pathogenesis of T-cell lymphomas Blood 131 (21): 2320-2330,2018.

2., Schrader A, Crispatzu G, Oberbeck S, Mayer P, Pützer S, von Jan J, Vasyutina E, Wamer K, Weit N, Pflug N, Braun T, Andersson El, Yadav B, Riabinska A, Maurer B, Ventura Ferreira MS, Beier F, Altmü J, Lanasa M, Herling CD, Haferlach T, Stilgenbauer S, Hopfinger G, Peifer M, Brümmendorf TH, Nürnberg P, Elenitoba-Johnson KSJ, Zha S, Hallek M, Moriggl R, Reinhardt HC Stern MH, Mustjoki S, Newrzela S, Frommolt P, Herling M.: Actionable perturbations of damage responses by TCL1/ATM and epigenetic lesions form the basis of T-PLL. Nat Commun. 9 : 697,2018.

Udager AM, McHugh JB, Goudsmit CM, Weigelin HC, Lim MS, Elenitoba-Johnson KSJ, Betz BL, Carey TE, Brown NA: Human papillomavirus (HPV) and somatic EGFR mutations are essential, mutually exclusive oncogenic mechanisms for inverted sinonasal papillomas and associated sinonasal squamous cell carcinomas. Ann Oncol 29 (2): 466-471,2018.

Brown NA, Elenitoba-Johnson KSJ: Clinical implications of oncogenic mutations in pulmonary Langerhans cell histiocytosis. Curr Opin Pulm Med : 2018.

Elenitoba-Johnson KSJ, Lim MS: New Insights into Lymphoma Pathogenesis Ann Rev Pathol: Mechanisms of Disease 13 : 193-217,2018.

Academic Contact Info

Department of Pathology and Laboratory Medicine
Perelman School of Medicine at the University of Pennsylvania
609 Stellar-Chance
422 Curie Blvd.

Philadelphia, PA 19104-6100
Phone: (215) 898-8198
Patient appointments: 800-789-7366 (PENN)