I've been a client/patient for several years now though successful wisdom tooth extractions, fillings, Invisalign, regular cleanings, and a crown overlay. Dr. Seifi and her staff are professional, friendly, empathetic, patient, knowledgeable, and responsive. Dr. Seifi makes every effort to prevent dental problems, and to identify and resolve those issues that can't be prevented. Top marks to Cherise, the lead dental hygienist, for her solid, consistent, thorough work. Niloo is also very patient and professional in following up to confirm appointments and options for rescheduling. Also, all of the staff I've encountered there have great smiles--important and relevant for obvious reasons. Dr. Seifi's office features the latest in dental technology and a variety of service packages that can be tailored to suit one's special needs. The facilities and equipment are well-maintained, handled in the most hygienic way possible, and very organized. There's ample free parking, considering the office is located in high-traffic Rockville.