Our Team

When choosing a dentist, it is important to know about the people you are trusting with the care of your mouth. We’d like you to get to know our staff a little better by providing brief descriptions to familiarize yourself with their credentials and backgrounds.

Our doctors received their training and education from the most prestigious dental schools and institutions around the nation.
They are world class specialists in both cosmetic and general dentistry.

More and more dentists continue to join the CITIDental team dedicated to providing a seamless, personal, comfortable, and high quality experience for patients.. We truly believe that everyone deserves a smile to be proud of.

Many of our dentists are members of the following:

  • American Academy of General Dentistry
  • American Dental Association
  • Massachusetts Dental Society
  • Alpha Omega Dental Fraternity
  • And more…

She is a member of the American Academy of Facial Aesthetics, American Academy of General Dentistry, American Dental Association, Massachusetts Dental Society, Florida Dental Association and Alpha Omega dental fraternity.


Dr. Rania Arif, D.M.D

Dr. Rania Arif is a California native who obtained her dental degree from Western University of Health Sciences. She is dedicated to providing her patients with high-quality dental care while cultivating a comfortable and fun environment. She believes a beautiful, healthy smile can change a person’s life.

Dr. Arif will tailor a treatment plan to your wants and needs and is always striving to provide the best possible care for her patients. She is a member of the American Dental Association and Massachusetts Dental Society. In her spare time, she enjoys spending time with her baby girl and her Peloton, as well as hiking and exploring new restaurants in the city with her husband.

Dr. Hadi Haidar

Dr. Haidar is a dedicated general dentist who received his Doctor of Dental Medicine degree from Boston University Henry M. Goldman School of Dental Medicine in 2018. He previously received his BA in Biology from Boston University in 2014. Dr Haidar advances his skills regularly with continuing education, focused on specialty skills such as orthodontics with emphasis in clear aligner therapy, and implant dentistry. He excels in his patient management skills and focuses extensively on patient comfort. Dr Haidar is beyond excited to continue developing his craft in a multidisciplinary setting that upholds the important values of family in his practice.


Colleen Shea, D.M.D, D.M.S.

Dr. Shea is a 1997 graduate of Harvard School of Dental Medicine where she received a Doctorate of Dental Medicine, a Certificate for Graduate Training in Periodontology, and in 2001 she received a Doctorate of Medical Sciences in Oral Biology. During her post-doctoral studies, she received the prestigious Dentist Scientist Award from the National Institutes of Health and conducted research on bone metabolism at Boston’s Children’s Hospital and Boston University School of Medicine’s Department of Orthopaedics. Dr. Shea is Board Certified as a Diplomate of the American Board of Periodontology. Her memberships include the American Dental Association, the Massachusetts Dental Society, and the American Academy of Periodontology.

Dr. Shea specializes in all aspects of periodontal treatment, including scaling and root planing, gingival grafts, periodontal surgery, and dental implants. She is passionate about educating her patients on the importance of periodontal health.

Khaled Seifelnaser, D.D.S.

Dr. Seifelnasr AKA “Dr.Safe” had an interesting diverse upbringing which allowed him to explore multiple parts of the world. He grew up in Greece, England and finally Egypt, where he completed his initial dental school training followed by a masters in endodontics. He then decided to reunite with his family in the United States and pursued an American dental degree from New York University College of Dentistry. After that, he decided to specialize, once again in my favorite dental specialty which is endodontics. He obtained his certificate in endodontics as well as his masters from West Virginia University. Dr.Seifelnasr is married and is blessed with three beautiful children. In his free time, he enjoys cooking, playing with his children and volunteering in schools to teach children how to take care of their teeth.

Dr.Seifelnasr’s passion for endodontics is because he believes that nothing could replace a patients original tooth, simply nature gave us something precious to look after and keep, his goal is to utilize our latest technological advancements and strongest scientific evidence to save his patients teeth and provide his patients with a pleasant and relaxing experience.

Mariana: Dental Hygienist

Mariana earned her Bachelor Degree in Dental Hygiene from the Forsyth School of Dental Hygiene at MCPHS University in May 2019. She is currently working on getting her Masters in Healthcare Management. “I am passionate about giving the best care possible and making patients feel comfortable, giving the best dental experience possible” I grew up in Boston . In her free time she enjoys spending time with her family, hiking and loves traveling. During the summer time, she loves visiting the Halibut Point State Park.

Anyara : Office Manager

Anyara has been with CitiDental since 2019. She has been in the dental field for four years, and is learning to improve things every day. Anyara enjoys spending time with her family and listening to Spanish Gospel music. She has a dog named Leon and two adorable kids. Aside from being CitiDental Brookline’s office manager, she is currently working toward a Business Management Degree. “I like taking care of patients, and my specialty is in insurance and finances. My job is to make their life as easy as possible when they are under our care”.

Freddyli : Patient Care Coordinator

Freddyli joined Citidental in 2021 and has been in the dental field going on 4 years. She is studying Psychology with A concentration in Child Development. “I love working in the dental field because the learning opportunities are endless. Meeting new people and helping patients with whatever they are in need of is my goal. In my free time I enjoy long walks, and beautiful views”.

Sadaf : Lead Dental Assistant

Sadaf graduated as a general dentist from her country in 2018, she plans to continue her education in the US to become a licensed dentist here as well. She Joined CitiDental Team in 2021 however she has been in the dental field since 2012, her experience and Knowledge in the field combined with her great communications skills made a great asset to provide our patients with the best dental care possible! She has been a very energetic team member with her positive attitude to help others, She is friends with all the team members and loves working in Citidental Brookline and hopes one day soon to join our team as a general dentist. Sadaf enjoys dancing and working out during her free time.

David : Dental Assistant

David is a peruvian trained dentist with a masters degree in prosthodontics from Brazil. He speaks Spanish, Portuguese and English. His journey in CitiDental Brookline started in 2022 as a dental assistant while working towards his US dental license. “I really enjoy working in CitiDental because of the great work atmosphere and the amazing patients coming here, I’m here to assist you get the best dental care!”

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