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HHT Center of Excellence

HHT Experienced Clinicians
Edward Ahn, M.D.
Neurosurgeon
Kofi Boahene, M.D.
ENT / Otolaryngology
Emily Boss, MD
Pediatric Otolaryngolocgy
Emily Rudnick, M.D.
Pediatric Otolaryngolocgy
Bernard Cohen, M.D.
Dermatology
Michael Collaco, M.D.
Pediatric Pulmonology
Mary Corretti, M.D.
Cardiology
Elliott Fishman, M.D.
Radiology
Philippe Gailloud, M.D.
Neuro-Interventional Radiology
Panagis Galiatsatos, MD, MHS
Critical Care, Pulmonology
Reda Girgis, M.D.
Pulmonology
Kelsey Guthrie, MGC, CGC
Genetic Counselor
Olaya Gutierrez, M.B.B.S.
Gastroenterology
James Hamilton, M.D.
Hepatology
Ada Hamosh, M.D.
Geneticist
William Henderson, DDS
Dentist
Judy Huang, M.D.
Neurosurgeon
David Hutcheon, M.D.
Gastroenterology
Jeffrey Jacobson, M.D.
Neurosurgeon
George Jallo, M.D.
Neurosurgeon
Wikrom Karnsakul, MD
Hepatology
Courtney Lawrence, MD, MS
Hematology
Doris Lin, M.D.
Neuro-radiology
Stephen Mathai, M.D., M.H.S.
Pulmonology
Christian Merlo, M.D., MPH
Pulmonology
Anum Minhas, M.D.
Cardiology
Weiyi Mu, ScM, CGC
Genetic Counselor
Enid Neptune, M.D.
Pulmonology
Patrick Okolo, M.D.
Gastroenterology
Kate Puttgen, M.D.
Dermatology
William Ravekes, M.D.
Cardiology
Kathy Schwarz, M.D.
Hepatology
Michael Streiff, M.D.
Hematology
Cliff Takemoto, M.D.
Hematology
Rafael Tamargo, M.D.
Neurosurgeon
Aylin Tekes, M.D.
Neuro-radiology
Suzanne Timshel,
Geneticist
Clifford Weiss, M.D.
Interventional Radiology
Ilan Wittstein, MD
Cardiology
Robert Wityk, M.D.
Neurology
Tinsay Woreta, MD, MPH
Hepatology
Gerald Wyse, M.D.
Neuro-Interventional Radiology
Karla Au Yeung, M.D.
Gastroenterology
David Yousem, M.D.
Neuro-radiology
1800 Orleans Street
Interventional Radiology Center, Charlotte Bloomberg Bldg, Suite 3287
Baltimore, MD 21287
United States
1800 Orleans Street Interventional Radiology Center, Charlotte Bloomberg Bldg, Suite 3287 Baltimore, MD 21287 United States
HHT Center of Excellence
Director(s): 
Clifford Weiss, M.D.
Panagis Galiatsatos, MD, MHS
Contact: 
NEW PATIENTS: Johns Hopkins USA/Registration
Abby ext. 38033; Carlos ext. 38032; Racquel ext. 38032
RETURNING PATIENTS: Gina Robinson, MSN, RN, HHT Coordinator
[email protected]; 410-357-9817 (during COVID pandemic)
Sophia Kemble, MSN, RN, HHT Coordinator
[email protected]
Center Phone: 
410-464-6555 (All Appts) / (410) 955-2307 (ENT)
HHT Center Website
Treatments Provided
Hospital Reported Treatments: 
Bevacizumab IV
Bevacizumab Topical
Brain AVM Embolization
Brain AVM Gamma Knife Surgery
Brain AVM Surgery (Other)
Capsule Endoscopies
Endoscopic Coagulation
Extended Reach Endoscopies (e.g. Double Balloon)
Genetic Counseling
Iron Therapy IV
Liver transplant
Lung AVM embolization
Nasal AVM Laser Ablation
Nasal Septo-dermoplasty
Skin AVM laser ablation
Clinician Reported Treatments: 

Iron Therapy IV
Genetic Counseling
Bevacizumab IV
Other AVM Treatment
Lung AVM embolization
Laser Surgery
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