Meet Our Doctors

Mark B. Gordon, O.D.

Specialties: Comprehensive Eye Care

Dr. Mark B. Gordon started his own practice in late 1971 in Taneytown, Maryland shortly after his return to Baltimore from New York where he did an extended residency. After a year in practice, he took an associate, Dr. Howard Levin. Together they opened or bought additional practices throughout the greater Baltimore area. These practices were known as Gordon and Levin until 1980, when the doctors added 3 Barenburg practices to their existing 6 practices. To insure continuity, all practices became known as Barenburg Eye Associates.

Dr. Gordon attended the University of Maryland from 1964 until 1967 when he was accepted a year early to the Pennsylvania College of Optometry. There he received his Bachelor of Science degree in 1968 and his Doctor of Optometry degree form in 1971. After graduation, Dr. Gordon attended the New York Optometric Center where he continued his studies in Vision Training.

Dr. Gordon was one of the founders of MEC Health Care, one of the first managed eye care companies in the country. He was critical in establishing optometry as the entry point and standard of care for such companies as BlueCross/Blue Shield, Carefirst, Potomac Health, Trigon Health and Kaiser Permanente, among others. Dr. Gordon served as C.E.O. and President until MEC was sold and he returned to full time optometry.

Dr. Gordon is a member of both the Maryland and American Optometric Associations.


Shoshana B. Cohen, O.D.

Specialites: Primary Eye Care, Glaucoma Co-Management, Contact Lenses

Dr. Shoshana Cohen attended the University of Maryland, College Park from 1989 until 1992, at which time, under early acceptance, she matriculated to the Pennsylvania College of Optometry in Philadelphia. Dr. Cohen received her Bachelor of Science degree from PCO in 1993 and completed her Doctor of Optometry degree in 1996.

As a fourth year extern, Dr. Cohen received Clinical Excellence in Pediatrics and Low Vision at the Pennsylvania College of Optometry and studied contact lenses at a private optometric practice in Ft. Lauderdale, Florida. Dr. Cohen continued her externships at Omni Eye Specialists in Baltimore, Maryland, in addition to concentrated clinical education with both Glaucoma and Retina Specialists in local private practices. Dr. Cohen completed her final externship at Katzen Eye Group in Baltimore, enhancing her diagnostic and clinical skills.

Upon Dr. Cohen’s graduation from PCO in 1996, she joined Barenburg Eye Associates. Dr. Cohen specializes in Primary eye care, with sub-specialties in Glaucoma Co-Management and Contact Lenses, including specialty fits and keratoconus.

Dr. Cohen is a member of both the Maryland and American Optometric Associations.

Joshua S. Gordon, O.D.

Specialties: Contact Lenses, Dry Eye, Pediatrics

Dr. Joshua S. Gordon attended the University of Maryland, College Park from 1992 until 1995 when he was accepted as a three year undergraduate to the Pennsylvania College of Optometry in North Philadelphia. He received his Bachelor of Science degree after his first year at Pennsylvania College of Optometry and completed his Doctor of Optometry degree in 1999.

While studying for his doctorate, Dr. Gordon did residencies in pediatrics and low vision at the Eye Institute in Philadelphia. At the Boston VA hospital he co- managed glaucoma and diabetic retinopathy. He studied contact lenses at one of the most renowned contact lens specialty practices, Broward Eye Care, in Ft. Lauderdale, Florida. His final residency with the Katzen Eye Group in Baltimore afforded him ample exposure to study pre and post operative cataract patients and ocular disease.

After his graduation in 1999, Dr. Gordon joined Barenburg Eye Associates. He specializes in the treatment of dry eye, the management of pre and post operative LASIK patients, and contact lenses, particularly those difficult to fit.  He is proficient in soft, rigid gas permeable, and hybrid contact lenses including the Synergeyes family of lenses for which Dr. Gordon is a  lecturer and consultant.  He also enjoys fitting patients with keratoconus and irregular corneas as well as post corneal transplant patients.

Dr. Gordon is a member of both the Maryland and American Optometric Associations.


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Harold R. Katz, M.D.

Specialties: Infectious eye disease, LASIK surgery, corneal and cataract surgery.

Dr. Harold R. Katz has over 20 years of experience as an ophthalmologist specializing in infectious eye disease, corneal and cataract surgery and refractive surgery. He is the recipient of the Golden Apple Ophthalmology Teaching Award and the Excellence in Teaching Award both from Sinai Hospital of Baltimore. Before joining Barenburg Eye Associates in late 2006, Dr. Katz was an Assistant Professor of Ophthalmology at Johns Hopkins University School of Medicine in Baltimore. Currently he is President of Ocular Consulting Services, Inc.

Dr. Katz is a native of New York City. He received his Bachelor of Arts in Biology, Summa Cum Laude, from Hunter College in New York. He graduated from New York University School of Medicine in 1979 and began his internship in that same year at Montefiore Hospital and Medical Center in the Bronx. After a four year residency in ophthalmology at Jules Stein Eye Institute in Los Angeles he completed his fellowship in Cornea/External Disease at Bascom Palmer Eye Institute in Miami, Florida. Dr. Katz was appointed to the staff of Krieger Eye Institute in 1984 and continued as Associate Chairman of Ophthalmology until 2005.

Dr. Katz is a member of too many prestigious organizations to enumerate. Among them are Phi Beta Kappa, the American Academy of Ophthalmology, the American Medical Association and the Maryland Society of Eye Physicians and Surgeons.


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Jonathan D. Ekedahl, M.D.

Specialties:  Cataract Surgery, General Ophthalmology

Dr. Jonathan Ekedahl received his B.A. in Biology from Washington University, St. Louis in 1997 and his M.S. With Distinction in Physiology from Georgetown University in 2003.  In 2008 he completed his studies in medicine from the University of Maryland Medical School right here in Baltimore.
Upon his graduation, Dr. Ekedahl completed his internship in internal medicine at Mercy Medical Center followed by a three year residency in ophthalmology at Virginia Commonwealth University in Richmond, VA.

One cannot say enough about Dr. Ekedahl's diverse interests and accomplishments.  Among them are his research activities with the National Institute of Health (NIH), the University of Maryland and Virginia Commonwealth University.  He has made formal presentations in Age Related Macular Degeneration, Rod-Cone Dystrophy, Retinoblastoma and Conjunctival Melanoma to mention just a few.

Currently Dr. Ekedahl is member of the American Academy of Ophthalmology and is completing his board certification in Ophthalmology.

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Rita Vekker, O.D.
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Specialties: Comprehensive Eye Care, Emergent care; Pre and Post-Operative Care

Dr. Vekker speaks fluent Russian

Dr. Rita Vekker received her B.S. (Summa Cum Laude) in Biology from Towson State University in 2004. She continued her studies at Pennsylvania College of Optometry earning her degrees in Visual Science and Doctor of Optometry in 2009.

She completed her internships at The Eye Institute of Salus University and other private practices in the Baltimore area, including OMNI Eye Institute and Katzen Eye Group. Dr Vekker specializes in comprehensive eye care, eye emergencies, as well as preoperative and postoperative care.

Dr. Vekker is a member of the both the Maryland and American Optometric Associations.

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Ross M. Fischer, O.D.

Specialties: Comprehensive Eye Care

Dr. Ross M. Fischer earned his undergraduate degree from the George Washington University in 1971 and his Doctor of Optometry degree from the Pennsylvania College of Optometry in 1975. He has certified continuing education in diagnostic pharmaceuticals from the University of Alabama and therapeutic pharmaceutical training from the State University of New York.

Dr. Fischer is a member of the Central Maryland Optometric Society where he served as Vice-President in 1981 and President in 1982. He is also a member of the Maryland Optometric and American Optometric Associations in addition to the Optometric Extension Program Foundation.

Dr. Fischer has been an associate of Barenburg Eye Associates for over 25 years.


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Stephen B. Hameroff, M.D.
Ophthalmological Consultation

Specialites: Primary Eye Care, Ophthalmology, Disease Management

Dr. Stephen Hameroff, a native of Brooklyn, New York. He completed his undergraduate studies at the University of Maryland, Magna Cum Laude in 1962. After graduation from the University of Maryland Medical School, Cum Laude in 1967, he interned at South Baltimore General Hospital. He completed residencies in Neurology, Neuro-ophthalmology and Ophthalmology and was board certified in Ophthalmology in 1974.

Dr. Hameroff served as Associate Professor of Ophthalmology and Associate Chief of Ophthalmology at University of Maryland and Union Memorial Hospitals respectively. He started his private practice with Dr. David Braver in 1967.

Dr. Hameroff is a member of the Baltimore County Medical Society and Med-Chi and the American Academy of Ophthalmology.

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