Sridhar Natarajan, M.D.
Principal
Biomechanics
  • Phoenix

Dr. Natarajan is Board Certified by the American Board of Pathology in Anatomic, Clinical and Forensic Pathology. He has been a Chief Medical Examiner for over a decade with involvement in more than 9000 forensic autopsies that included determining natural and non-natural causes of death and manners of death. During the last decade, Dr. Natarajan has practiced forensic pathology with an emphasis on injury causation and biomechanics in both vehicular and non-vehicular traumatic events, as well as a variety of criminal matters. He has testified in over 300 cases as an expert in criminal and civil matters in district and federal courts and for the Department of Justice. Dr. Natarajan’s extensive experience includes numerous investigations involving children, abuse cases, vehicular trauma, falls from height, occupational hazards, gunshot wounds, suicides, burns, drowning, asphyxiation, electrocution, and in-custody incidents.

Dr. Natarajan is a Colonel in the U. S. Army Reserves. He has completed tenures as the 4th Brigade Commander and Combat Medic Training Medical Director (San Antonio, Texas), and as the 80th Training (TASS) Command Surgeon (Richmond, Virginia). He is currently appointed as the Command Surgeon for the 79th SSC (Sustainment Support Command) located in Los Alamitos, California. He was recently awarded the Surgeon General’s “A” Proficiency Designator, which is the highest recognition for professional excellence in Army Medicine. He has served as the Medical Director of various departments within the military and as Clinical Adjunct Professor for the USAF School of Aerospace Medicine.

He was appointed to the Texas Forensic Science Commission in 2006 by Governor Rick Perry and served in that capacity for three years. Dr. Natarajan is a Member or Fellow of a number of prominent national and international organizations; he has nationally lectured, published and is on the Scientific Editorial Panel and Board of Directors of the Association for the Advancement of Automotive Medicine. He has served as the Medical Director for the Lubbock County Sexual Assault Nurse Examiner (S.A.N.E.) Program. He returned as the Director and Chief Medical Examiner for Lubbock County, Texas, in February of 2009 and has an appointment as Clinical Professor in the Department of Pathology, Texas Tech School of Medicine.

CREDENTIALS & PROFESSIONAL HONORS

  • M.D., Medical University of South Carolina, 1992
  • M.S., Ceramic Science, Alfred University, 1982
  • B.A., Chemistry, Cornell University, 1979
  • Forensic Pathology Fellowship, Bexar County Forensic Science Center and Office of the Medical Examiner San Antonio, Texas, 2001–2002

    Medical Microbiology Subspecialty Training, Brooke Army Medical Center, San Antonio, Texas, 1997–1999

    Anatomic/Clinical Pathology Residency, Brooke Army Medical Center, San Antonio, Texas, 1993–1997

    Transitional Medicine Internship, Walter Reed Army Medical Center, Washington, D.C., 1992–1993

    United States Navy Nuclear Submarine School, New London, Connecticut, 1983

    United States Navy/Knolls Nuclear Reactor Prototype, Weston Milton, New York, 1983

    United States Navy Nuclear Reactor Theory/Power School, Orlando, Florida, 1982–1983 

LICENSES & CERTIFICATIONS

Board Certified in Forensic Pathology, American Board of Pathology, 2004

Subspecialty Trained in Medical Microbiology, American Board of Pathology, 1999

Board Certified in Anatomic Pathology, American Board of Pathology, 1997

Board Certified in Clinical Pathology, American Board of Pathology, 1997

Texas State Medical License J5422, 1993–present

Publications

Natarajan S. South Plains Child Fatality Review Team child death scene investigation training. Presented to Health Care Workers, Social Service Workers, and First Responders, Lubbock, TX, May 2013.

Natarajan S. Homicidal violence with blunt trauma and sexual assault. Presented to Texas Criminal Defense Lawyers Association (TCDLA) 10th Annual Forensics Seminar, Dallas, TX, October 2012.

Natarajan S. Medical examiner fire death investigations (thermal, scalding and electrical deaths. Presented to West Texas Fire Arson Investigators Association, Lubbock, TX, February 2012.

Natarajan S. Blunt force trauma, sexual assault and asphyxia. Presented to Texas Criminal Defense Lawyers Association (TCDLA) 9th Annual Forensics Seminar, Dallas, TX, November 2011.

Natarajan S. Pediatric child abuse and death. Presented to Children’s Hospital Association TX, CHAT) Pediatric Nursing Conference, Lubbock, TX, October 2011.

Natarajan S. The use of forensic experts and capital murder cases. Presented to the Capital Murder Clinic at Texas Tech University School of Law, Lubbock, TX, October 2011. 

Natarajan S. Homicidal violence and sexual assault. Presented to Military Defense Counsel Trial Litigation at the Center for American and International Law, Plano, TX, August 2011. 

Natarajan S. The autopsy report. Presented to West Texas Paralegal Association at Texas Tech University School of Law, Lubbock, TX, May 2011. 

Natarajan S. The inquest and the forensic autopsy. Presented to West Texas County Judges & Commissioners Annual Education Conference & Business Meeting, Lubbock, TX, April 2011. 

Natarajan S. Shotgun wound trauma (severity, gauge, ammunition and wound patterns). Presented to University Medical Center Trauma Symposium at Texas Tech University, Lubbock, TX, November 2010. 

Natarajan S. Forensic evidence: The autopsy. Presented at the Texas District and County Attorneys Association, South Padre Island, TX, September 2010. 

Natarajan S. Homicidal violence, sexual assault and the death scene. Presented at the USAR 733rd Military Police Battalion CID Annual Special Agent Training (ASAT), Charlotte, NC, September 2010. 

Natarajan S. Sudden Unexplained Infant Death/Sudden Infant Death Syndrome. Presented at the Child Fatality Review Team Conference, Merket Center Texas Tech University, Lubbock, TX, August 2010. 

Natarajan S. Asphyxia and death. Presented at the Texas Bar Advanced Criminal Law Course and Criminal Law Boot Camp, Dallas, TX, July 2009. 

Ho JD, Heegaard WG, Dawes DM, Natarajan S, Reardon RF, Miner JR. Unexpected arrest-related deaths in America: 12 months of open source surveillance, May 2009. 

Natarajan S. Homicidal sexual assault and potential findings. Presented at the Capital Trial Prosecution Seminar-Presenting The Capital Case From Start To Finish: Center For American and International Law, Plano, TX, April 2009. 

Natarajan S. Forensic pathology. Presented at the 34th Annual Advanced Criminal Law Course. San Antonio, TX, July 2008. 

Natarajan S. Child fatality cases. Presented at the Capital Trial Prosecution – Emphasis on Evidentiary Issues Conference: Center For American and International Law, Plano, TX, April 2008. 

Natarajan S. Biomechanics of causes of death in motor vehicle crashes. Presented at the Association for the Advancement of Automotive Medicine 51st Annual Conference. Melbourne, Australia, October 2007. 

Natarajan S. Pathology issues in automotive product liability litigation. Presented at the ABA/TIPS Conference. Phoenix, AZ, March 2007. 

Natarajan S. Gunshot wounds: General surgery grand rounds. Texas Tech University School of Medicine, Lubbock, TX, January 2006. 

Natarajan S. Autopsy interpretation results. Presented at the Texas Criminal Defense Lawyers Association Conference. The Westin City Center, Dallas, TX, December 2005. 

Natarajan S. Sharp force injuries. Presented at the 12th Annual Forensic Science Seminar jointly sponsored by Lubbock County Medical Examiner’s Office, Lubbock County Sheriff’s Office, Texas Tech University Department of Pathology, Texas Tech Institute of Forensic Sciences, and Office of Continuing Medical Education. Presented at the Holiday Inn Park Plaza, Lubbock, TX, October 2005. 

Natarajan S. Blunt force trauma of the head and chest; homicide investigation. Presented in association with lectures by Virginia Lynch at the Forensic Nursing Conference sponsored by LifeGift, Texas Tech University Health Sciences Center, Lubbock, TX, October 2005. 

Natarajan S. Sudden Infant Death Syndrome (SIDS), undetermined cause of death and neonaticide. Presented in association with lectures by Virginia Lynch at the Forensic Nursing Conference sponsored by LifeGift, Texas Tech University Health Sciences Center, Lubbock, TX, October 2005. 

Natarajan S. Introduction to gunshot wounds. Presented at Trauma and Critical Care Symposium, Texas Tech University Health Sciences Center and University Medical Center, Lubbock, TX, October 2005. 

Natarajan S. Death scene investigation, excited delirium deaths, in custody deaths, and interesting cases. Presented at the Alpine Medicolegal Death Conference, Sul Ross University, Alpine, TX, July 2005. 

Natarajan S. Conducting an autopsy and death scene investigation. Presented at the Lubbock Police Academy, Lubbock, TX, July 2005. 

Natarajan S. When to order an autopsy. Presented at Texas Justice Court Judges Association Inquest School, Lubbock, TX, May 2005. 

Natarajan S. Postmortem changes, time since death and interesting forensic cases. Presented at the Texas Tech Institute of Forensic Science/Lubbock County Medical Examiner’s Medicolegal Death Investigation Seminar Texas Department of Criminal Justice, Iowa Park, TX, May 2005. 

Natarajan S. Gunshot wounds of the chest. Presented at the Texas Society of Respiratory Care (TSRC) Northwest Region Spring Training Seminar, Holiday Inn and Towers, Lubbock, TX, April 2005. 

Natarajan S. Sudden Infant Death Syndrome (SIDS), Undetermined death, and blunt force trauma in the pediatric population. Presented at the Children’s Advocacy Center of the South Plains Seminar, Lubbock, TX, April 2005. 

Natarajan S. Gunshot wounds: Covenant CSI. Presented at Covenant Health System CME Trauma Conference #1, Lubbock, TX, January 2005. 

Natarajan S. Pediatric homicidal blunt force trauma: Covenant CSI. Presented at Covenant Health System CME Trauma Conference #1, Lubbock, TX, January 2005. 

Natarajan S. Identifying abuse of the elderly: A medical perspective. Presented at the Forensic Investigations and Adult Protective Services Seminar; Texas Tech Institute of Forensic Sciences, Lubbock, TX, January 2005. 

Cassidy RA, Natarajan S, Vaughn GM. The link between the insecticide heptachlor epoxide, estradiol, and breast cancer. Breast Cancer Research and Treatment 2005; 90:55–64. 

Natarajan S. The medicolegal autopsy. Presented at the Texas Criminal Defense League Association (TCDLA) Second Annual Forensic Seminar, Plano, TX, August 2004. 

Natarajan S. Homicidal and non-homicidal asphyxia. Presented at the Texas Criminal Defense League Association (TCDLA) Second Annual Forensic Seminar, Plano, TX, August 2004. 

Natarajan S. Death scene investigation, pediatric deaths, in custody deaths and interesting cases. Presented at the Alpine Medicolegal Death Investigation Seminar, Sul Ross University, Alpine, TX, July 2004. 

Natarajan S. Asphyxial deaths. Presented at the Texas Society of Respiratory Care (TSRC) Northwest Region Conference, April 2004. 

Foose A, Paine RR, Nisbett RA, Natarajan S. Age at death determination using the skeletal histomorphometry of the third metacarpal and third metatarsal from autopsy and cadaver samples. 73rd Annual American Association of Physical Anthropologists Meeting, Tampa, FL, April 2004. 

Foose A, Paine RR, Nisbett RA, Natarajan S. Age at death determination using the skeletal histomorphometry of the third metacarpal and third metatarsal from autopsy and cadaver samples. 56th Annual American Academy of Forensic Sciences Meeting, Dallas, TX, February 2004. 

Natarajan S. Introduction to forensic pathology: Introduction to forensic science course. Physics 2351, Texas Tech University, November, 2003. 

Natarajan S. Crime scene evaluation of post mortem changes. Lubbock Police Academy, Lubbock, TX, November, 2003. 

Natarajan S. Sudden infant death syndrome, undetermined pediatric deaths and blunt force pediatric injuries. Presented at the Texas Criminal Defense League Association (TCDLA) First Annual Forensic Seminar, Plano, TX, August 2003. 

Natarajan S. Autopsy pathology and post mortem changes. Presented at the Texas Criminal Defense League Association (TCDLA) First Annual Forensic Seminar, Plano, TX, August, 2003. 

Natarajan S. Pediatric blunt force trauma of the head and chest. Presented at the Texas Criminal Defense League Association (TCDLA) Retreat Seminar, Mo Ranch, Kerrville, TX, August 2003. 

Carlton SM, Zahn CM, Kendall BS, Natarajan S. Placenta increta/percreta associated with uterine perforation during therapy for fetal death. Journal of Reproductive Medicine 2001; 46:601–605. 

Trummel DE, Natarajan S. Gemella bacteremia and the utility of the PYR assay. Clinical Microbiology Newsletter 2001 Sept; 23(17):135–137. 

Cummings GH, Natarajan S, Keilig RH, Dewitt CC, Gardner TL. Mycobacterium thermoresistible and M. fortuitum recovered from a cutaneous lesion in an otherwise healthy individual. Clin Infect Disease September 2000; 31(3):816–817. 

Prieto R, Waselenko JK, Olivere JW, Johnson TR, Natarajan S, Byrd JC. Epstein Barr Virus (EBV) Associated Primary Central Nervous System Lymphoma (PCNSL) arising in a patient after fludarabine and corticosteroid treatment. Am. Soc. of Hematology – 40th Annual Meeting, 1998. 

Natarajan S, Keilig R, Anderson G. Anaerobic gram positive bacilli. 22nd Annual Meeting of the Society of Armed Forces Medical Laboratory Scientists (SAFMILS), San Antonio, TX, April 1998. 

Keilig R, Natarajan S, Anderson G. Anthrax as a biological weapon. 22nd Annual Meeting of the Society of Armed Forces Medical Laboratory Scientists (SAFMILS), San Antonio, TX, April 1998. 

Anderson G, Natarajan S, Keilig R. Case report presentation: The Association of Clostridium Septicum and Malignant Conditions. 22nd Annual Meeting of the Society of Armed Forces Medical Laboratory Scientists (SAFMILS), San Antonio, TX, April 1998. 

Morey AF, MacDonald MF, Rolanski TA, Natarajan S, Thompson I. Yield and efficiency of biopty gun tests needle biopsy. Urology November 1997. 

Natarajan S. Case report presentation: Intraabdominal fibromatosis. San Antonio Society of Pathologists Meeting, November 1995. 

Natarajan S. Case report presentation: Cystic congenital adenomatoid malformation. San Antonio Society of Pathologists Meeting, November 1994. 

Nolan DG, Martin LS, Natarajan S, Hume RS. Fetal compromise associated with extreme fetal bile acidemia and maternal primary sclerosing cholangitis. Obstetrics and Gynecology 1994 Oct; 84(4):695–696. 

Natarajan S. Master of Science Thesis: Fabrication and Evaluation of a Ceramic-Acrylic Polymer Bone Cement. Defended and accepted May 1982, Alfred University (Alfred, New York. 

Rausch JP, Monroe EA, Natarajan S. Alveolar bone preservation using a ceramic-polymer implant. Proceedings, 33rd Annual Conference on Engineering in Medicine and Biology at Washington, DC, October 1980. 

Rausch JP, Monroe EA, Natarajan S. A biomedical composite ceramic-polymer. Bioengineering, Edited by Igor Paul, Pergamon Press, 1980. 

Rausch JP, Monroe EA, Natarajan S. A composite ceramic polymer. Proceedings, 8th Annual Northeast Bioengineering Conference at M.I.T., Cambridge, Massachusetts, pp. 22–27, March 1980. 


Prior Experience

Chief Medical Examiner, Lubbock County, Director of the Medical Examiner’s Office, Lubbock, Texas, 2009–present

Clinical Professor, School of Medicine Department of Pathology, Texas Tech University Health Science Center, 2009–present

Forensic Consultant, 2009–present

Consultant, Biodynamic Research Corporation, San Antonio, Texas, 2005–2009

Texas Forensic Science Commission, 2006–2009

Medical Director, Sexual Assault Nurse Examiner Program, Lubbock County, 2005–2006

Chief Medical Examiner, Lubbock County, and Director, Division of Forensic Pathology, Texas Tech University Health Sciences Center, Lubbock, Texas, 2003–2006

Assistant Professor of Pathology, Texas Tech University Health Sciences Center, School of Medicine, Lubbock, Texas, 2002–2006

Deputy Medical Examiner, Lubbock County, Lubbock, Texas, 2002–2003

Assistant Medical Examiner, Bexar County Forensic Science Center, San Antonio, Texas, 2001–2002

Lieutenant Colonel, United States Army Staff Anatomic/ Clinical Pathologist – Active Duty, Brooke Army Medical Center - Fort Sam Houston, San Antonio, Texas Medical Director, Medical Microbiology, Brooke Army Medical Center, 1997-2001

  • Medical Director, Blood Bank and Transfusion, Brooke Army Medical Center, 1998–2000
  • Surgical and Autopsy Staff Pathologist, Brooke Army Medical Center, 1997–2001
  • Chief/Medical Director, Flow Cytometry, Brooke Army Medical Center, 1997–1998
  • Chief Resident, Department of Pathology, Brooke Army Medical Center/ Wilford Hall Medical Center, 1996–1997

Family Practice Physician, Hill Country Medical Center, Boerne, Texas, 1995–1999

Emergency Room Physician, Medina Community Hospital, Gould Emergency Room Physician Group, Hondo, Texas, 1995–1996

Family Practice/Emergency Room Physician, Alamo City Medical Group/Nix Hospital, San Antonio, Texas, 1993–2002

Emergency Room Physician, Alice Physicians & Surgeons Hospital, Alice, Texas, 1993–1996


Professional Affiliations

Member, Society of Automotive Engineers, 2007–present

Associate Member, American Academy of Forensic Sciences, 2008–present

Clinical Adjunct Professor, USAF School of Aerospace, Medicine, 2008–present

Member, Association for the Advancement of Automotive Medicine, 2007–present

Fellow, National Association of Medical Examiners, (NAME), 2002–present

Fellow and Diplomat of the American College of Pathologists (FCAP), 1997–present

Diplomat of the National Board of Medical Examiners, 1993–present

Fellow American Society of Clinical Pathologist (FASCP), 2013–present


CREDENTIALS & PROFESSIONAL HONORS

  • M.D., Medical University of South Carolina, 1992
  • M.S., Ceramic Science, Alfred University, 1982
  • B.A., Chemistry, Cornell University, 1979
  • Forensic Pathology Fellowship, Bexar County Forensic Science Center and Office of the Medical Examiner San Antonio, Texas, 2001–2002

    Medical Microbiology Subspecialty Training, Brooke Army Medical Center, San Antonio, Texas, 1997–1999

    Anatomic/Clinical Pathology Residency, Brooke Army Medical Center, San Antonio, Texas, 1993–1997

    Transitional Medicine Internship, Walter Reed Army Medical Center, Washington, D.C., 1992–1993

    United States Navy Nuclear Submarine School, New London, Connecticut, 1983

    United States Navy/Knolls Nuclear Reactor Prototype, Weston Milton, New York, 1983

    United States Navy Nuclear Reactor Theory/Power School, Orlando, Florida, 1982–1983 

LICENSES & CERTIFICATIONS

Board Certified in Forensic Pathology, American Board of Pathology, 2004

Subspecialty Trained in Medical Microbiology, American Board of Pathology, 1999

Board Certified in Anatomic Pathology, American Board of Pathology, 1997

Board Certified in Clinical Pathology, American Board of Pathology, 1997

Texas State Medical License J5422, 1993–present