His commitment to the highest level of current therapeutics and professional competence is evident by the accolades he receives from his patients and colleagues alike. He is often described as a master clinician.

Dr. Zeren was raised in Towson, Maryland and completed a Bachelors of Science degree in Psychology at the University of Maryland at College Park. He attended the University Of Maryland School Of Dentistry and finished his Dental training in 1975. He was on active duty in the United States Navy for 2 years finishing a general practice Residency at the Naval Hospital in New Orleans, Louisiana. He returned to Baltimore to study Periodontics at University of Maryland under the world renowned Periodontist, Dr. Gerald M. Bowers, completing his Residency in 1979. He opened a practice limited to Periodontics in the Timonium area, and has been actively involved in both private clinical practice and dental education since that time.

Dr. Zeren began teaching in the Residency Program at the University of Maryland in 1980. Dr. Zeren became Board Certified in Periodontics in 1986 and has continued to pursue and develop important advances in clinical science and technology to enhance his patients treatment outcomes. Currently, Dr. Zeren assistant clinical professor of Periodontics and Periodontal Implant Prosthetics residency program at University of Maryland School of Dentistry. He is involved with treating residents in the multidisciplinary fields of Periodontics, Periodontal and Implant surgery and implant prosthetics.