Board Certified Diplomate of the American Board of Obstetrics and Gynecology as of 2012

Board Certified Diplomate, Reproductive Endocrinology and Infertility as of 2018 

Fellow American College of Obstetricians and Gynecologists (FACOG)

American Medical Association (AMA) 

Association of Military Surgeons of the United States (AMSUS) 

American Society for Reproductive Medicine (ASRM) 

Society for Reproductive Endocrinology and Infertility (SREI) 

National Medical Association (NMA)

Air War College by correspondence, Maxwell AFB, AL, December 2016 

Air Command and Staff College by correspondence, Maxwell AFB, AL, July 2011 

Aerospace Medicine Primary Course, Brooks City-Base, TX, April 2006 

Combat Casualty Care Course, Camp Bullis, San Antonio, TX, February 2006 

Distinguished Graduate, Squadron Officer School, Maxwell AFB, AL, August 2001 

Radiation Safety Officer Course, Brooks Air Force Base (AFB), TX, July 1998 

Commander and Staff Radiological Accident Response Course, Defense Nuclear Weapons School, Kirtland Air Force Base, New Mexico, February 1998 

Medical Red Flag Course, Sheppard Air Force Base, TX, October 1997 

Medical Management of Biological Casualties, United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, MD, September 1997 

Bioenvironmental Engineering Course, Brooks Air Force Base, TX, June 1996 

Airmanship 490 Course, Basic Free Fall Parachuting, USAFA, August 1992 

Survival Evasion Resistance and Escape (SERE), Basic Combat Survival and Water Survival Course, United States Air Force Academy, August 1992

Duty Title: Chief, Reproductive Endocrinology & Infertility / IVF Director
Dates: 2018 – 2020
Location: San Antonio Military Medical Center (SAMMC), Texas

Duty Title: Staff Physician, Reproductive Endocrinology and Infertility
Dates: 2016 – 2018
Location: San Antonio Military Medical Center (SAMMC), Texas

Duty Title: Clinical Fellow, Reproductive Endocrinology and Infertility
Dates: 2013 – 2016
Location: NIH and Walter Reed Medical Center, Bethesda, Maryland 

Duty Title: Chief, Department of Obstetrics & Gynecology
Dates: 2012 – 2013
Location: David Grant Medical Center, Travis Air Force Base, California

Duty Title: Medical Director, Department of Obstetrics & Gynecology
Dates: 2010 – 2012
Location: David Grant Medical Center, Travis Air Force Base, California

Duty Title: Deployed OB/GYN, Humanitarian Response Team
Dates: April 2011
Location: Trinidad and Tobago

Duty Title: Administrative Chief Resident, Obstetrics and Gynecology
Dates: 2009 – 2010
Location: San Antonio Military Medical Center (SAMMC), Texas

Duty Title: Assistant Professor, Obstetrics and Gynecology
Dates: 2006 – Present
Location: USUHS School of Medicine, Bethesda, Maryland

Duty Title: Student Commander, United States Air Force Class of 2006
Dates: 2002 – 2006
Location: USUHS School of Medicine, Bethesda, Maryland

Duty Title: Commander, Bioenvironmental Engineering Flight
Dates: 1999 – 2002
Location: MacDill Air Force Base, Florida

Duty Title: Commander, Bioenvironmental Engineering Flight
Dates: 1995 – 1999
Location: McGuire Air Force Base, New Jersey

Duty Title: Deployed Deputy Air Force Mission Commander and Medical Team Chief
Dates: Jan – Mar 1999
Location: San Salvador, El Salvador 

Deputy Mission Commander for Central American tour by President of the United States

Coordinated with White House & Embassy staff in four Central American countries

Provided humanitarian relief to Hurricane Mitch survivors throughout Central America 

Undergraduate:

• United States Air Force Academy: 1991 – 1995

• Superintendent’s, Dean’s, Commandant’s and Athletic Director’s List

Medical

• U.S. Patent (10,188,572) awarded 29 January 2019 – Greene Stirrups field medical device allows for examination of patients in low / high lithotomy positions on NATO stretchers

• Outstanding Paper Award (1st Place) and Scholarship Recipient, 2016 Pacific Coast Reproductive Society Annual Meeting, Palm Springs California – March 2016 

• Outstanding Poster Award, American College of Obstetricians and Gynecologists, Armed Forces District Annual Meeting, Norfolk Virginia – October 2015

• USAF Clinical Excellence Award, Air Mobility Command (Field Grade Officer), 2011

• Academic Excellence Award, Obstetrics & Gynecology – PGY-1 and PGY-4 Resident, San Antonio Uniformed Services Health Education Consortium; 2006 – 2010

• Outstanding Chief Resident, Society of Laproendoscopic Surgeons, San Antonio Uniformed Services Health Education Consortium (SAUSHEC); 2009 – 2010 

• Outstanding Case Report, American College of Obstetricians and Gynecologists, Armed Forces District Annual Meeting, Honolulu Hawaii – November 2009 

• Reproductive Endocrinology Resident Award, American College of Obstetricians and Gynecologists, Armed Forces District Annual Meeting – October 2008 

• OB / GYN Extra Mile Award – Excellence in Patient Satisfaction, San Antonio Uniformed Services Health Education Consortium (SAUSHEC), May 2007 

• Wingman Award, Aerospace Medicine Primary Course (Flight Surgeon) – April 2006 

• Outstanding Academic Performance Award in Surgery, USUHS – October 2005 

• Outstanding Troop Award, USUHS School of Medicine, January – June 2004 

• Outstanding Medical Student in Obstetrics & Gynecology, Armed Forces District, American College of Obstetricians and Gynecologists; 2002 – 2006

Military

• Selected for rank of Colonel, date of rank 31 May 2019

• Selected for rank of Lieutenant Colonel two years below-the-zone, date of rank 31 May 2013 

• Meritorious Service Medal with two oak leaf clusters 

• Joint Service Commendation Medal 

• Air Force Commendation Medal 

• Air Force Achievement Medal with oak leaf cluster

• Army Achievement Medal

• National Defense Service Medal with bronze star

• Global War on Terrorism and Humanitarian Service Medal 

• Small Arms Expert Marksman Ribbon 

• German Troop Duty Proficiency Badge (Gold), German Armed Forces Command, 2002 

• Company Grade Officer of the Year – 6th Medical Group (Hospital) & 6th Aerospace Medicine Squadron, MacDill Air Force Base (AFB), FL, 2000 

• Wing Company Grade Officer of the Quarter – McGuire AFB, New Jersey, 305th Air Mobility Wing & Medical Group, Jan – Mar 1999 & Jan – Mar 1998 

• Company Grade Officer of the Year – 305th Medical Group and 305th Aerospace Medicine Squadron, McGuire AFB, NJ, 1996, 1997 and 1998 

• USAF Air Mobility Command, Bioenvironmental Engineer of the Year, 1998

G. Royster IV, J. Harris, Y. Castro, R. Weitzel, A. Nelson, J. Tisdale, R. Heitmann, DeCherney, E. Wolff, “Rapamycin Corrects T Regulatory Cell Depletion and Improves Embryo Implantation and Live Birth Rates in a Murine Model.” Reproductive Sciences, 19 February 2019. 

G. Royster IV, K. Krishnamoorthy, K Csokmay, B. Yauger, R Chason, A. DeCherney, E. Wolff, M. Hill, “Are intracytoplasmic sperm injection and high serum estradiol compounding risk factors for adverse obstetric outcomes in assisted reproductive technology?” Fertility and Sterility, 2016 Aug; 106 (2): 363 – 370. 

M. Hill, G. Royster IV, M. Taneja, M. Healy, S. Zarek, A. Christy, A. DeCherney, E. Widra, K. Devine, “Does elevated progesterone on day of oocyte maturation play a role in the racial Disparities in IVF outcomes?” Reprod Biomed Online, 2016 Nov 16. 

M. Hill, G. Royster IV, M. Healy, M. Levy, et al., “Are good patient and embryo characteristics protective against the negative effect of elevated progesterone level on the day of oocyte maturation?” Fertility and Sterility, 2015 Jun; 103(6): 1477 – 84. 

B. Yu, S. Mumford, G. Royster IV, J. Segars, A. Armstrong, “Cost-effectiveness analysis comparing continuation of assisted reproductive technology with conversion to intrauterine insemination in patients with low follicle numbers,” Fertility and Sterility, 2014 Aug: 102(2): 435 – 439. 

G. Royster IV, M. Retzloff, A. Propst, et al., “The Length of Controlled Ovarian Hyperstimulation Using Gonadotropin Releasing Hormone Antagonist, Does Not Adversely Affect in Vitro Fertilization Pregnancy Rates,” Journal of Reproductive Medicine, 2012 Sep – Oct; 57(9-10): 415 – 420. 

G. Foglia, G. Royster IV, N. Michael, et al., “Use of Rapid and Conventional Testing Technologies for Human Immunodeficiency Virus Type 1 Serological Screening in a Rural Kenyan Reference Laboratory,” Journal of Clinical Microbiology, 2004 Aug; 42(8): 3850 – 3852.

G. Royster IV, Nelson, J. Harris, M. Connell, R. Heitmann, E. Wolff, “Live Birth Rates Improve with Expansion of T-Regulatory Cells using Rapamycin in a Murine Model” 

• Oral Presentation, Pacific Coast Reproductive Society (PCRS), Palm Springs, CA, 2016 

• Won Outstanding Paper Award (1st Place) 

G. Royster IV, A. Nelson, J. Harris, M. Connell, R. Heitmann, E. Wolff, “Live Birth Rates Improve with Expansion of T-Regulatory Cells using Rapamycin in a Murine Model” 

• Oral Presentation, Society of Reproductive Investigations (SRI), Montreal, Canada, 2016′

G. Royster IV, A. Nelson, J. Harris, M. Connell, E. Wolff, “Live Birth Rates Improve with Expansion of T-Regulatory Cells using Rapamycin in a Murine Model” 

• Poster Presentation, Armed Forces District Annual Meeting, ACOG, Norfolk, VA, Oct 2015 

• Won Outstanding Poster Award

G Royster IV, A. Nelson, J. Csokmay, M. Hill, et al., “Elevated Estradiol Levels (> 90th Percentile) at the Time of hCG Trigger During Controlled Ovarian Hyperstimulation Increases Obstetrical Risks Later in Pregnancy”

• Poster Presentation, Society for Reproductive Investigation, San Francisco, CA, Mar 2015

G. Royster IV, M. Levy, M. Hill, et al., “Three Day Progesterone Area Under the Curve (AUC): A Better Test than Progesterone on the day of hCG?” 

• Oral Presentation, ASRM Annual Meeting, Honolulu, Hawaii, October 2014

G. Royster IV, R. Bochner, “Greene Stirrups: A Novel Solution to a Global Problem”

• Poster Presentation, Society for Gynecologic Investigation (SGI), Florence, Italy, Mar 2014

G. Royster IV, Z. Zarek, K. Richter, M.Levy, et al., “The Effect of Peak Endometrial Thickness (EMT) on Live Birth Rates in Patients Undergoing Assisted Reproductive Technology (ART): An Analysis of 4,086 ART Cycles” 

• Oral presentation, ASRM Annual Meeting, Boston Massachusetts, October 2013

G. Royster IV, Z. Zarek, K. Richter, M. Levy, et al., “Caucasian Race/Ethnicity is Associated with Decreased Peak Endometrial Thickness and Increased Live Birth: An Analysis of 4,086 Assisted Reproductive Technology (ART) Cycles”

• Oral Presentation, ASRM Annual Meeting, Boston Massachusetts, October 2013

G. Royster IV, J. Orr, B. Staat, et al., “Video Presentation of Ex Utero Intrapartum Treatment (EXIT) Procedure at a Military Treatment Facility (Wilford Hall Medical Center, Lackland Air Force Base, Texas) for Large 7.4 cm Anterior Neck Mass.”

• Oral Presentation, Armed Forces District Annual Meeting, ACOG, Hawaii – Nov 09

• Won Outstanding Case Report – November 2009

G. Royster IV, M. Retzloff, A. Propst, et al., “Does the length of controlled ovarian hyperstimulation or exposure to gonadotropin releasing hormone (GnRH) antagonists affect in vitro fertilization (IVF) pregnancy rates?” 

• Poster Presentation, ASRM Annual Meeting, Atlanta Georgia, October 2009

G. Royster IV, A. Propst, “Does the length of ovarian stimulation affect pregnancy outcomes in In Vitro Fertilization (IVF) and Intracytoplasmic Sperm Injection (ICSI) Cycles using a Gonadotropin Releasing Hormone Antagonist?” 

• Oral Presentation, Armed Forces District Annual Meeting, American College of Obstetricians and Gynecologists, Norfolk Virginia – October 2008

• Won Reproductive Endocrinology Resident Award – October 2008

• Poster Presentation, Pacific Coast Reproductive Society Meeting – April 2009 

G. Royster IV, A. Shields, “New paradigm in control of massive postpartum hemorrhage during caesarian section using SOS Bakri Tamponade Balloon Catheter” 

• Poster Presentation, Armed Forces District Annual Meeting, American College of Obstetricians and Gynecologists (ACOG), Louisville Kentucky, October 2007

• Poster Presentation, Military Health System Conference, Washington D.C., Jan 08

Fourth Year Medical Student Sub-Internship Coordinator 

Administrative Clinical Fellow, Reproductive Endocrinology and Infertility Fellowship Program National Institutes of Health / Walter Reed National Military Medical Center 

STEM (Science, Technology, Engineering and Mathematics) Mentor for high school and college students from underprivileged backgrounds, California, Maryland and Texas 

United States Air Force Chief Resident, Obstetrics and Gynecology, SAMMC 

Volunteer Boys and Girls 11-12 year-old Travis Air Force Base Basketball Team Coach 

San Antonio Food Bank Volunteer, San Antonio, Texas 

Squadron Commander, USAF Medical Students, Class of 2006, USUHS – School of Medicine  

Chapter Vice President, & Delegate to the American Medical Association (AMA) USUHS School of Medicine, Medical Student Section 

Chairman, Youth Science Enrichment Program, USUHS School of Medicine 

Tar Wars Educator, USUHS School of Medicine, Family Medicine Interest Group  

Free Clinic Volunteer (Helping Hands Clinic), USUHS School of Medicine 

Counselor and Tutor, Tampa Bay Boys & Girls Club, Tampa, Florida 

President, Company Grade Officer’s Council, McGuire AFB, New Jersey 

Volunteer, Habitat for Humanity, New Jersey 

Captain, United States Air Force Academy Men’s Track & Field Team