Sanjay Dhawan, MD

Resident PGY2, Department of Neurosurgery

Sanjay Dhawan

Contact Info

MD, University College of Medical Sciences, University of Delhi, New Delhi, India

General Surgery/Neurosurgery Preliminary Track, University of Minnesota

General surgery, Maulana Azad Medical College, University of Delhi, India

Medical Device Innovation, Earl E. Bakken Medical Devices Center, University of Minnesota

Neuro-oncology, University of Minnesota


Dr. Dhawan completed medical school and a general surgery residency at the University College of Medical Sciences and Maulana Azad Medical College of the University of Delhi in India. He completed the first-ever General Surgery/Neurosurgery Preliminary Track at the U, an ACGME-accredited program designed to emulate the first year of residency with the departments of Surgery and Neurosurgery.

In addition, Dr. Dhawan completed a Medical Device Innovation Fellowship through the U’s Medical Device Center as well as a dedicated neuro-oncology fellowship. He is listed as co-inventor on one U.S. patent and two provisional U.S. patent applications and has secured a National Science Foundation I-Corps Grant, and a Frank J. and Eleanor A. Maslowski Charitable Trust Grant towards his work for his patent on designing a steerable microcatheter to manage ischemic stroke in patients with tortuous anatomy. Dr. Dhawan built his research skills during 2.5 years as a Research Fellow in the brain tumor lab of Neurosurgery Department Head Clark C. Chen, MD, PhD.

Prior to arriving at the U, Dr. Dhawan volunteered for two years at the Guru Teg Bahadur Hospital Blood Bank, and with the Pulse Polio Immunization Programme, both in New Delhi, India. When he has free time, Dr. Dhawan likes to play shotput, do calligraphy and coding, cook Indian food, and travel. 

Awards & Recognition

  • Gold Medal for excellence in class in medical school
  • Gold Medal for excellence in Final Professional Examination (MBBS)
  • Gold Medal (Smt. Ram Pyari and Shri L. N. Chugh Memorial Medal) for securing highest marks in Internal Medicine
  • Gold Medal (Dr. Madhu Saxena Memorial Award) for standing First in Internal Medicine
  • Gold Medal (Dr. (Miss) L. V. Pathak Medal) for securing highest marks in Obstetrics and Gynecology
  • Silver Medal in Community Medicine
  • Silver Medal (Distinction) in Biochemistry 


  • Hindi
  • Punjabi



  • Chen, Clark C; Molnar, Gregory F; Dhawan, Sanjay. Devices and Methods for Treatment of Tumors using Electromagnetic Signal. WO 2020/047285 A1. Published on 05.03.2020
  • Dhawan, Sanjay; Molnar, Gregory F; Filho, Enio. T. Perez; Duduta, Mihai. Systems and Methods for Treating Spasticity with Neuromodulation. Case UMN 2020-273. Attorney Docket No. 1008.84US01P1 (Provisional).
  • Filho, Enio. T. Perez; Duduta, Mihai; Dhawan, Sanjay; Kowalewski, Tim; McDonald, Gillian. Steerable Microcatheter. Case UMN 2020-251. SLW 600.A75PRV (Provisional). 


Peer Reviewed Journal Articles and Online Publications:

  1. Li J, Kaneda MM, Ma J, Dhawan S, et al. PI3K&gamma inhibition suppresses microglia/TAM accumulation in glioblastoma microenvironment to promote exceptional temozolomide response. Accepted for Publication. Proc Natl Acad Sci U S A. 2021 Apr 20;118(16):e2009290118.
  2. Zhu Z, Mesci P, Bernatchez JA, Dhawan S, et al. Zika Virus Targets Glioblastoma Stem Cells through a SOX2-Integrin α(v)β(5) Axis. Cell Stem Cell. 2020 Feb 6;26(2):187-204.e10.
  3. Dhawan S, Venteicher AS, Butler WE, Carter BS, Chen CC. Clinical outcomes as a function of the number of samples taken during stereotactic needle biopsies: A Meta-Analysis. J Neurooncol. June 2021 (Accepted for publication).
  4. Dhawan S, Alattar AA, Bartek J Jr, Ma J, Bydon M, Venteicher AS, Chen CC. Racial disparity in recommendation for surgical resection of skull base chondrosarcomas: A Surveillance, Epidemiology, and End Results (SEER) analysis. J Clinical Neuroscience. July 2021 (Under revision). 
  5. Lewis JM, Dhawan S, Obirieze A, Sarno B, Akers J, Heller MJ, Chen CC. Plasma biomarker for post- concussive syndrome: a pilot study using an alternating current electro-kinetic platform. Front Neurol. 2020;11:685.
  6. Dhawan S, Bartek J Jr, Chen CC. Cost-Effectiveness of Stereotactic Laser Ablation (SLA) for Brain Tumors. Int J Hyperthermia. 2020;37(2):61-67.
  7. He Y, Li J, Koga T, Ma J, Dhawan S, et al. Epidermal Growth Factor Receptor (EGFR) as a molecular determinant of glioblastoma response to dopamine receptor 2 (DRD2) inhibitors. Neuro Oncol. 2020;noaa188. doi:10.1093/neuonc/noaa188.
  8. Bartek J Jr, Dhawan S, Thurin E, et al. Short-term outcome following surgery for rare brain tumor entities in adults: a Swedish nation-wide registry-based study and comparison with SEER database. J Neurooncol. 2020;10.1007/s11060-020-03490-z.
  9. Ramakrishnan V, Xu B, Akers J, Dhawan S, et al. Radiation-induced extracellular vesicle (EV) release of miR-603 promotes IGF1-mediated stem cell state in glioblastomas. EBioMedicine. 2020;55:102736.
  10. Dhawan S, Patil CG, Chen C, Venteicher AS. Early versus delayed postoperative radiotherapy for treatment of low-grade gliomas. Cochrane Database Syst Rev. 2020 Jan 20;1:CD009229.
  11. Dhawan S, He Y, Bartek J Jr, Alattar AA, Chen CC. Comparison of Frame-Based Versus Frameless Intracranial Stereotactic Biopsy: Systematic Review and Meta-Analysis. World Neurosurg. 2019 Jul;127:607-616.e4.
  12. Bartek J Jr, Alattar AA, Dhawan S, Ma J, Koga T, Nakaji P, Dusenbery KE, Chen CC. Receipt of brachytherapy is an independent predictor of survival in glioblastoma in the Surveillance, Epidemiology, and End Results database. J Neurooncol. 2019 Oct;145(1):75-83.
  13. Bartek J Jr, Sjåvik K, Dhawan S, et al. Clinical Course in Chronic Subdural Hematoma Patients Aged 18- 49 Compared to Patients 50 Years and Above: A Multicenter Study and Meta-Analysis. Front Neurol. 2019;10:311.
  14. Hirshman BR, Alattar AA, Dhawan S, Carley KM, Chen CC. Association between medical academic genealogy and publication outcome: impact of unconscious bias on scientific objectivity. Acta Neurochir (Wien). 2019 Feb;161(2):205-211.
  15. Patel KS, Dhawan S, Wang R, Carter BS, Chen JY, Chen CC. Post-operative imaging assessment of non- functioning pituitary adenomas. Acta Neurochir (Wien). 2018;160(5):1029?1039.
  16. Dhawan S, Lal T, Pandey PN, Saran R, Singh A. Synchronous Occurrence of Colloid Cyst with Intracranial Ossifying Fibromyxoid Tumor Masquerading as Meningioma. Cureus 12(9): e10662.
  17. Dhawan S, Lal T. Regarding “The Safety and Efficacy of Frame-Based Stereotactic Biopsy of Brain Lesion”. MAMC Journal of Medical Sciences 5 (2), 101.
  18. Dixit A, Dhawan S, Raizada A, Yadav A, Vaney N, Kalra OP. Attention and information processing in end stage renal disease and effect of hemodialysis: A bedside study. Renal Failure. July 2013; 35(9).
  19. Nawabi A, Pederson C, Nawabi A, Nawabi P, Dhawan S, Deas S. Surgical Management of Iatrogenic Right Hepatic Duct Injury after Laparoscopic Cholecystectomy: A Case Report. Advances in Life Sciences and Health. 2015:1-5.
  20. Dhawan S, Garg P, Lal P, Vindal A. (2017, March 01). Encrusted Calculi Over a Forgotten Double J Ureteral Stent. MAMC J Med Sci. 2017;3:49

Poster Presentations:

  1. Alattar AA, Dhawan S, Chen CC. (2018). Natural history and risk factors for cystic formation after stereotactic radiosurgery for brain metastases. Poster presented at: Society for Neuro-Oncology (SNO) Annual Scientific Meeting; New Orleans, LA.
  2. Alattar AA, Dhawan S, Chen CC. (2018). Prognostic Importance of Age, Tumor Location, and Tumor Grade in Grade II Astrocytomas Poster presented at: Society for Neuro-Oncology (SNO) Annual Scientific Meeting; New Orleans, LA.
  3. Alattar AA, Dhawan S, Chen CC. (2018). Ventriculomegaly After Stereotactic Radiosurgery for Brain Metastases Poster presented at: Society for Neuro-Oncology (SNO) Annual Scientific Meeting; New Orleans, LA.

Oral Presentations

  1. Zhu Z, Dhawan S, Chen CC, Rich J (2020). Zika Virus Targets Glioblastoma Stem Cells through a SOX2-Integrin α(v)β(5) Axis. Society for Neuro-Oncology (SNO) Annual Scientific Meeting; Austin, TX (virtual).
  2. Li J, Dhawan S, Chen CC. (2018). Microglia- Glioblastoma interaction influence clinical survival Oral Presentation presented at: American Association of Neurological Surgeons Annual Scientific Meeting; New Orleans, LA.
  3. Ramakrishnan V, Dhawan S, Xu B, Chen CC. (2018). mi-RNA degradation mediated genetic heterogeneity as a novel mechanism for Temozolomide resistance in Glioblastoma Oral Presentation presented at: Society for Neuro-Oncology (SNO) Annual Scientific Meeting; New Orleans, LA.
  4. Ramakrishnan V, Xu B, Dhawan S, Chen CC. (2019). Targeting MGMT promoter unmethylated Glioblastomas through microRNA delivery Oral Presentation presented at: American Association of Neurological Surgeons Annual Scientific Meeting; San Diego, CA.
  5. Dhawan S, Dixit A, Vaney N. (2011). Hemodialysis improves Cognitive Functions in Patients with End Stage Renal Failure. Oral Presentation presented at: MEDICON; Mumbai, IND.
  6. Dhawan S, John S, Bhatia P. (2011). Single access laparoscopic cholecystectomy Oral Presentation presented at: Reduced port surgery meeting (Stryker); New Delhi, IND.
  7. Dhawan S, Pawanindra L, Vindal A. (2016). Feasibility and efficacy of Laparoscopic Mini Gastric Bypass on morbidly obese Indian population. Oral Presentation presented at: OSSICON; Chandigarh, IND.
  8. Dhawan S, Pawanindra L, Vindal A. (2016). Laparoscopic Mini Gastric Bypass is comparable to Laparoscopic Sleeve Gastrectomy in morbidly obese population: A single institution experience. Oral Presentation presented at: SELSICON/ IHSCON; Agra, IND.