Paul Keiser is an Allergy and Immunologist in Rockville, Maryland. Dr. Keiser is rated as a Distinguished provider by MediFind in the treatment of Sinusitis. His top areas of expertise are Allergic Rhinitis, Sinusitis, Grass Allergy, and Hives.

Murugappan “Murray” Ramanathan is an experienced sinus and skull base surgeon with a high-volume clinical presence at Johns Hopkins Health Care and Surgery Center in Bethesda and Suburban Hospital. He specializes in complex revision endoscopic sinus surgery, endoscopic approaches to the orbit, and the endoscopic management of sinonasal and skull base tumors, including inverted papilloma, esthesioneuroblastoma (also known as olfactory neuroblastoma) and pituitary tumors. He routinely collaborates with colleagues in neurosurgery, ophthalmology, head and neck oncology, and facial plastic surgery to deliver multidisciplinary, patient-centered care. Dr. Ramanathan has consistently been recognized for his patient-centered approach to care as a “Top Doctor” by Bethesda Magazine, Washingtonian, Northern Virginia Magazine and Castle Connolly. He earned his undergraduate degree from Yale University and medical degree from the University of Texas Medical Branch at Galveston. Dr. Ramanathan completed an internship in general surgery and residency in otolaryngology–head and neck surgery at Johns Hopkins, followed by fellowship training in advanced endoscopic sinus and minimally invasive skull base surgery at Johns Hopkins. He joined the Johns Hopkins faculty in 2010. Dr. Ramanathan is the vice director of clinical operations for the Johns Hopkins Department of Otolaryngology–Head and Neck Surgery, overseeing the delivery and integration of otolaryngologic care at nine ambulatory clinic sites and five hospitals within Johns Hopkins Medicine. He is passionate about continuously evaluating and improving care delivery processes across all clinical sites for the department. As a surgeon-scientist, Dr. Ramanathan leads a National Institutes of Health-funded research program that was among the first to establish the link between air pollution and chronic rhinosinusitis from an epidemiologic and basic science perspective. He has received numerous prestigious research awards and grants; has published over 110 peer-reviewed articles, reviews and book chapters; and is frequently invited to speak about his research at national and international meetings. Dr. Ramanathan holds multiple national leadership roles, including chair of the CORE Grants General Section for the American Academy of Otolaryngology–Head and Neck Surgery. Dr. Ramanathan is rated as an Advanced provider by MediFind in the treatment of Sinusitis. His top areas of expertise are Pituitary Tumor, Sinusitis, Chronic Rhinosinusitis with Nasal Polyps (CRSwNP), and Ethmoiditis.

Nyall London has a unique clinical practice focused on the care of patients with sinonasal and skull base cancers. As one of the few surgeons trained in both head and neck cancer surgery, as well as rhinology and skull base surgery, he offers patients comprehensive sinonasal tumor surgical care, including open and endoscopic approaches as well as neck dissection surgery. Dr. London has developed notable patient education events about the multidisciplinary and long-term care of patients with sinonasal malignancies. Additionally, he is an innovator of clinical trials for these rare tumors, with open clinical trial options available and multiple others in development. Internationally recognized for his expertise in the care of patients with sinonasal and skull base cancers, Dr. London was an associate editor for the first international consensus statement on sinonasal tumors, and was appointed president of the International Network for Sinonasal Cancer Research (2024–26). He directs a research laboratory at the National Cancer Institute/National Institutes of Health focused on therapeutic advances and mechanisms of sinonasal tumorigenesis. Dr. London has published more than 130 peer-reviewed research articles, reviews and book chapters, including co-first author publications in Nature, Nature Medicine, Science Translational Medicine and Nature Cell Biology. He earned his medical and doctoral degrees from the University of Utah, and completed his residency in otolaryngology–head and neck surgery at Johns Hopkins. He also accomplished a fellowship in open and endoscopic head and neck and skull base surgery at The Ohio State University, under the direction of Dr. Ricardo Carrau. Dr. London is rated as an Advanced provider by MediFind in the treatment of Sinusitis. His top areas of expertise are Olfactory Neuroblastoma, Sinus Cancer, Teratocarcinosarcoma, Endoscopy, and Craniectomy.

Angela Canady is an Allergy and Immunologist in Silver Spring, Maryland. Dr. Canady is rated as a Distinguished provider by MediFind in the treatment of Sinusitis. Her top areas of expertise are Allergic Rhinitis, Sinusitis, Grass Allergy, and Asthma. Dr. Canady is currently accepting new patients.

Mary Callsen, M.D., practices internal medicine at Johns Hopkins Community Physicians Downtown Bethesda. She received her medical degree from The Ohio State University College of Medicine, and completed her residency in internal medicine at Brooke Army Medical Center in San Antonio, Texas. In 2014, Washingtonian magazine recognized Dr. Callsen as one of the area’s “Top Doctors.” Videos Caring for the CommunityMeet Dr. Mary Callsen. Dr. Callsen is rated as an Experienced provider by MediFind in the treatment of Sinusitis. Her top areas of expertise are Sitosterolemia, Pityriasis Rosea, Hypothyroidism, and Obesity in Children.

Dr. Jack B. Williams is an otolaryngologist affiliated with Sibley Memorial Hospital, Washington Hospital Center and Georgetown University Hospital. He practices out of Feldman ENT Group in Washington, D.C. and Chevy Chase, Md. Dr. Williams has an expertise in advanced sinus surgery techniques such as balloon sinuplasty, pediatric otolaryngology, rhinology and care of the professional voice. Dr. Williams earned his medical degree from the University of Texas Medical Branch. He completed a residency in otolaryngology at the Georgetown University Hospital. Dr. Williams previously served as a firefighter and paramedic. Dr. Williams is a fellow of the American College of Surgeons and the American Academy of Otolaryngology. Dr. Williams was named a Top Doctor in the Washington, D.C., Baltimore and Washington-Baltimore areas by Castle Connolly in 2012. Dr. Williams is rated as an Advanced provider by MediFind in the treatment of Sinusitis. His top areas of expertise are Chronic Rhinosinusitis with Nasal Polyps (CRSwNP), Sinusitis, Empyema, and Nonallergic Rhinopathy.

Pryor Brenner is an Otolaryngologist in Chevy Chase, Maryland. Dr. Brenner is rated as an Advanced provider by MediFind in the treatment of Sinusitis. His top areas of expertise are Jones Syndrome, DFNB1, Infant Hearing Loss, and Benign Paroxysmal Positional Vertigo.

Dr. Philip S. Schoenfeld is an otolaryngologist affiliated with Sibley Memorial Hospital and Georgetown University Hospital, as well as an assistant clinical professor of surgery at Georgetown University School of Medicine and the Uniformed Services University. He practices out of Feldman ENT Group in Chevy Chase, Md. and Washington, D.C. Dr. Schoenfeld is also the founder and medical director of Renu Artful Medicine in Chevy Chase, Md. Dr. Schoenfeld earned his medical degree from New York Medical College. He was a recipient of the United States Army health professions scholarship and completed a residency in otolaryngology at Walter Reed Army Medical Center. Dr. Schoenfeld also received advanced training in facial plastic and reconstructive surgery. He served ten years in the United States Army, five of which were with the 82nd Airborne Division and the other five as chief of the department of otolaryngology and facial plastic surgery at Fort Bragg, N.C. Dr. Schoenfeld is a fellow of the American Academy of Otolaryngology, the American Academy of Facial Plastic Surgery and the American College of Surgeons. He participates in the Academy of Facial Plastic Surgery’s Face to Face program, which provides free care for the victims of disfiguring domestic violence. Dr. Schoenfeld also work with Project Access, which provides medical care to underserved and indigent patients. Dr. Schoenfeld has been named a Top Doctor and featured in publications ranging from the Washington Post to Parade magazine. Dr. Schoenfeld has presented nationally on topics of facial plastic surgery. He has served as a consultant and clinical instructor for Medicis and Allergen, and has appeared on local and national news agencies. Dr. Schoenfeld also serves on the written board review committee and as an oral board examiner for the American Board of Facial Plastic and Reconstructive Surgery. Dr. Schoenfeld is rated as an Advanced provider by MediFind in the treatment of Sinusitis. His top areas of expertise are Low Nasal Bridge, Nasal Septal Hematoma, Ethmoiditis, and Perichondritis.

Dr. Jessica C. Shen is an otolaryngologist affiliated with Sibley Memorial Hospital, Washington Hospital Center, Georgetown University Hospital and Children’s National Medical Center. She practices out of Feldman ENT Group in Chevy Chase, Md. and Germantown, Md. Dr. Shen has an expertise in sinus disease and surgery, pediatric otolaryngology, and head and neck oncology. Dr. Shen earned her medical degree from the University of Michigan Medical School. She completed a residency in otolaryngology at the Hospital of the University of Pennsylvania. Dr. Shen earned the American Rhinologic Society resident research grant. Dr. Shen is a fellow of the American Academy of Otolaryngology, as well as a member of the American Rhinologic Society and the American Academy of Otolaryngic Allergy. Dr. Shen is rated as an Advanced provider by MediFind in the treatment of Sinusitis. Her top areas of expertise are Benign Paroxysmal Positional Vertigo, Tinnitus, Infant Hearing Loss, and Empyema.

Dr. Mark A. Dettelbach is an otolaryngologist affiliated with Sibley Memorial Hospital, Children’s National Medical Center, Washington Hospital Center and Georgetown University Hospital, where he is an associate clinical professor. He practices out of Feldman ENT Group in Washington, D.C. and Chevy Chase, Md. Dr. Dettelbach has an expertise in pediatric ENT, otology, sinuses and snoring disorders. Dr. Dettelbach earned his medical degree from Yale University School of Medicine. He completed a residency in otolaryngology at the University of Pittsburgh Medical Center. Dr. Dettelbach is a fellow of the American College of Surgeons and the American Academy of Otolaryngology-Head and Neck Surgery, as well as a member of the American Academy of Otolaryngology and Osler Medical Society. He was previously the president of the Jacobi Medical Society. Dr. Dettelbach is rated as an Advanced provider by MediFind in the treatment of Sinusitis. His top areas of expertise are Tinnitus, Infant Hearing Loss, Jones Syndrome, and DFNB1.

Dr. Nora Malaisrie is an otolaryngologist affiliated with Sibley Memorial Hospital, Washington Hospital Center, Georgetown University Hospital and Children’s National Medical Center. She practices out of Feldman ENT Group in Chevy Chase, Md. and Germantown, Md. Dr. Malaisrie has an expertise in pediatric otolaryngology, sinus disease and surgery, and head and neck oncology. Dr. Malaisrie earned her medical degree from Georgetown University School of Medicine. She completed a residency in otolaryngology at the Hospital of the University of Pennsylvania. Dr. Malaisrie is a fellow of the American Academy of Otolaryngology. Dr. Malaisrie is rated as an Advanced provider by MediFind in the treatment of Sinusitis. Her top areas of expertise are Benign Paroxysmal Positional Vertigo, Nonallergic Rhinopathy, Palatal Myoclonus, and Ozena.

Yung-hao Pung is an Allergy and Immunologist in Rockville, Maryland. Dr. Pung is rated as an Advanced provider by MediFind in the treatment of Sinusitis. His top areas of expertise are Allergic Conjunctivitis, Conjunctivitis (Pink Eye), Grass Allergy, and Allergic Rhinitis.

Laura Brown, M.D., practices internal medicine at Johns Hopkins Community Physicians North Bethesda. She received her medical degree from Harvard Medical School, and also completed her residency in internal medicine at Bellevue Hospital Center. Dr. Brown is rated as an Experienced provider by MediFind in the treatment of Sinusitis. Her top areas of expertise are High Cholesterol, Familial Combined Hyperlipidemia, Xanthoma, and Cirrhosis.

Joshua Levy is an Otolaryngologist in Bethesda, Maryland. Dr. Levy is rated as a Distinguished provider by MediFind in the treatment of Sinusitis. His top areas of expertise are Nasal Polyps, Sinusitis, Chronic Rhinosinusitis with Nasal Polyps (CRSwNP), Endoscopy, and Septoplasty.

Anuradha Arun is a primary care provider, practicing in Family Medicine in Silver Spring, Maryland. Dr. Arun is rated as an Advanced provider by MediFind in the treatment of Sinusitis. Her top areas of expertise are Sitosterolemia, Vitamin D Deficiency, High Cholesterol, and Glucocorticoid-Remediable Aldosteronism.

Thomas Winkler is an Otolaryngologist and an Oral and Maxillofacial Surgeon in Chevy Chase, Maryland. Dr. Winkler is rated as a Distinguished provider by MediFind in the treatment of Sinusitis. His top areas of expertise are DFNB1, Jones Syndrome, Nonallergic Rhinopathy, and Palatal Myoclonus.

Manish Khanna is an Otolaryngologist in Washington, Washington, D.c.. Dr. Khanna is rated as a Distinguished provider by MediFind in the treatment of Sinusitis. His top areas of expertise are Chronic Rhinosinusitis with Nasal Polyps (CRSwNP), Sinusitis, Empyema, and Nasal Septal Hematoma.

Dr. James G. Vap is an otolaryngologist affiliated with Sibley Memorial Hospital and Georgetown University Hospital. He practices out of ENT Medical Group of Washington, located in Washington, D.C. and McLean, Va. Dr. Vap has an expertise in otology, otolaryngic allergy, rhinology and sinus disease. Dr. Vap earned his medical degree at the University of California at Davis School of Medicine. He completed a residency in otolaryngology at Huntington Memorial Hospital and an otology fellowship at the University of Southern California School of Medicine. Dr. Vap previously served as a medical staff specialist at the National Naval Medical Center. Dr. Vap is a fellow of the American Academy of Otolaryngology and the American College of Surgeons. He has served as a consultant to the National Institutes of Health, the Walter Reed Army Medical Center and the Medical Advisory Board of the Treatment and Learning Center. Dr. Vap is rated as a Distinguished provider by MediFind in the treatment of Sinusitis. His top areas of expertise are Common Cold, Meniere Disease, Tinnitus, and Empyema.

Dr. Jose A. Quiros is an internist affiliated with Sibley Memorial Hospital and Suburban Hospital. He has a private practice in Bethesda, Md. Dr. Quiros earned his medical degree from the Universidad Nacional Mayor de San Marcos. He completed an internship and residency in internal medicine at Georgetown University Hospital. Dr. Quiros has been named a Top Doctor by Washingtonian magazine. Dr. Quiros is rated as an Experienced provider by MediFind in the treatment of Sinusitis. His top areas of expertise are Glossitis, Pernicious Anemia, High Cholesterol, and Vitamin B12 Deficiency.

Dr. Dennis A. Cullen is an internist affiliated with Sibley Memorial Hospital. He practices out of Cullen, Umosella, Cullen & Cullen in Bethesda, Md. and Oxon Hill, Md. Dr. Cullen earned his medical degree from Georgetown University School of Medicine. He completed a residency in internal medicine at Georgetown University Hospital. Dr. Cullen has been named a Top MD by Consumers’ Checkbook Magazine, as well as a Top Family/General Practitioner and a Top Internist by Washingtonian Magazine. Recent News Articles and Media Coverage The Brothers Cullen. Bethesda Magazine (January/February 2008). Dr. Cullen is rated as an Experienced provider by MediFind in the treatment of Sinusitis. His top areas of expertise are Multiple Carboxylase Deficiency, Vitamin B12 Deficiency Anemia, Folate Deficiency, and Subacute Combined Degeneration.