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Gregory C. Allen, MD, FACS, FAAP

Associate Professor

Associate Medical Director, Cleft Palate Clinic


Department of Pediatric Otolaryngology
Children's Hospital Colorado
13123 East 16th Avenue, B-455 
Aurora, CO 80045


Phone: 720-777-8520
Fax: 720-777-7345



Appointments: 720-777-8501

Hospital Affiliations:

Children’s Hospital Colorado, Aurora
Children’s Hospital Colorado North Campus, Broomfield
Children’s Hospital Colorado Specialty Care, Wheat Ridge
University of Colorado Hospital

Clinical Interests:

Cleft lip & palate, general otolaryngology

Subspecialty Training: Pediatric Otolaryngology


Medical School

(1986-1990) MD, University of Arkansas for Medical Sciences, Little Rock, AR


(1990-1991) Intern, General Surgery, West Virginia University Hospitals, Morgantown, WV

(1991-1995) Resident, Otolaryngology, West Virginia University Hospitals, Morgantown, WV

(1996) Board Certified, American Board of Otolaryngology


(1995-1996) Research Fellow, Pediatric Otolaryngology, Children’s Hospital of Pittsburgh, Pittsburgh, PA

(1996-1997) Clinical Fellow, Pediatric Otolaryngology, Children’s Hospital of Pittsburgh, Pittsburgh, PA

Ramadan HH, Allen GC: The Influence of Elective Neck Dissection on Neck Relapse in No Supraglottic Carcinoma. Am J Otolaryngol 14:278-281, 1993. Pub Med ID: 8214324

Bawa R, Allen GC, Ramadan HH: Cylindrical Cell Papilloma of the Nasal Septum. Ear Nose Throat J 74:179-181, 1995. Pub Med ID: 7729343

Ramadan HH, Allen GC: Complications of Endoscopic Sinus Surgery in a Residency Training Program. Laryngoscope 105:376-379, 1995. Pub Med ID: 7715381

Allen GC, Lubus S, Wax MK, DeVore RF: Epidermal growth factor regulates topoisomerase II activity and drug resistant in human KB cells. Otolaryngol Head Neck Surg 114:785-792, 1996. Pub Med ID: 8643303

Goldstein NA, Armfield DR, Kingsley LA, Borland LM, Allen GC, Post JC: Postoperative complications after tonsillectomy and adenoidectomy in children with Down syndrome. Arch Otolaryngol Head Neck Surg 124:171-176, 1998. Pub Med ID: 9485108

Allen GC, Wax MK, Koike KJ, Ritchey AK: Transient evoked otoacoustic emissions in evaluation of children treated with cisplatin chemotherapy. Otolaryngol Head Neck Surg 118:584-588, 1998.

Doyle WJ, Skoner DP, Alper CM, Allen GC, Moody SA, Seroky JT, Hayden FG. Effect of ramantadine treatment on clinical manifestations and otological complications in adults experimentally infected with influenza A (H1N1) virus. Journal of Infectious Diseases. 177:1260-5, 1998 May.

Allen GC, Armfield D, BonTempo F, Kingsley L, Goldstein N, Post JC. Adenotonsillectomy in children with von WillibrandÕs disease. Arch Otolaryngol Head Neck Surg 125:547-551, 1999. Pub Med ID: 10326812

Slack CL. Allen GC. Morrison JE. Garren KC. Roback MG. Post-varicella epiglottitis and necrotizing fasciitis. Pediatrics. 105:13, 2000 Jan. Pub Med ID: 10617750

Allen GC. Stool SE. History of pediatric airway management. Otolaryngologic Clinics of North America. 33:1-14, 2000 Feb. Pub Med ID: 10637341

Hu FZ. Preston RA. Post JC. White GJ. Kikuchi LW. Wang X. Leal SM. Levenstien MA. Ott J. Self TW. Allen G. Stiffler RS. McGraw C. Pulsifer-Anderson EA. Ehrlich GD. Mapping of a gene for severe pediatric gastroesophageal reflux to chromosome 13q14. JAMA. 284:325-34, 2000 Jun. Pub Med ID: 10891964

Lewark TM. Allen GC. Chowdhury K. Chan KH. Le Fort I osteotomy and skull base tumors: a pediatric experience. Arch Otolaryngol Head Neck Surg. 126(8):1004-8, 2000 Aug. Pub Med ID: 10922235

Chan KH, Friedman NR, Allen GC, Yaremchuk K, Wirtschafter A, Bikhazi N, Bernstein JM, Kelley PK, Lee KC. Randomized, controlled, multi-site study of subtotal tonsillectomy using low temperature plasma excision. Arch Otolaryngol Head Neck Surg, 130(11):1303-7, 2004 Nov.

Wartchow EP, Goin L, Schreiber J, Mierau GW ,Terella A, Allen GC. Plexiform Fibrohistiocytic Tumor: Ultrastructural Studies May Aid in Discrimination from Cellular Neurothekeoma. Ultrastructural Pathology. 33(6): 286-92, 2009 Dec. Pub Med ID: 19929176

Mudd PA, Perkins JN, Harwood JE, Valdez S, Allen GC. Early Intervention: distraction osteogenesis of the mandible for severe airway obstruction. Otolaryngol Head Neck Surg. 146(3): 467-72, 2012 Mar.