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Dr. Robert Costisevschi

Pediatric Dentist

Dr. Robert Costisevschi is a Board Certified Pediatric Dentist. He received his Doctorate of Dental Surgery from the University of the Pacific Arthur A. Dugoni School of Dentistry in San Francisco, California. During dental school, Dr. Costisevschi served as an ASDA (American Student Dental Association) and SCOPE  (Student Community Outreach for Public Education) officer and received the community service award upon graduation.

He then pursued to complete a General Practice Residency program at St. Barnabas Hospital, which is a Level 1 trauma center, in the Bronx, New York. After finishing the program, Dr. Costisevschi remained at St. Barnabas Hospital to complete his Pediatric Dentistry specialty training, where he served as Chief Resident.

As a Pediatric Dentist, Dr. Costisevschi strives to provide a fun, comfortable, and positive experience for your child. By advocating preventative dentistry and providing comprehensive dental care, he aspires to help your child achieve a healthy lifestyle filled with success in oral hygiene and happiness.

Outside of Dentistry, Dr. Costisevschi enjoys exercising at the gym, listening to music, playing guitar, and cheering for the Golden State Warriors. He is also a big Disney and Marvel fan.

Dr. Costisevschi is a proud member of the American Academy of Pediatric Dentistry and serves as a Diplomat for the American Board of Pediatric Dentistry.

Dr. Hengameh (Hannah) Karkhanechi, DDS


Dr. Karkhanechi is a board certified orthodontist that has been living and practicing orthodontics in Northern California since 2001. “Dr K” received her Bachelor degree in Biochemistry and Cell biology from University of California, San Diego in 1994 with honors. In 1998 she graduated from University of California San Francisco School of Dentistry, where she received her Doctor of Dental Surgery Degree, she was given The Dean’s Award for her achievements in dental school. “Dr. K” went on to specialize in orthodontics in New York University, where she received her orthodontic degree in 2001.  Dr. K is a member of the American Dental Association, American Association of Orthodontics, California Dental Association and Pacific Coast Society of Orthodontics. In addition to practicing orthodontics, Dr. K is also an assistant clinical professor of Orthodontics at the University of California, San Francisco School of Dentistry.  Her involvement with academics allows her to have first hand exposure to the latest clinical and research techniques. When she is not practicing orthodontics, Dr. K enjoys spending time with her family. She loves skiing and enjoys swimming, hiking, cycling, painting, reading, and listening to music.. 

“As an orthodontist not only do I enjoy creating beautiful smiles, and healthy bites, but I also thoroughly take pleasure in meeting and connecting with my patients. I am passionate about orthodontics, because it’s an artful application of science coupled with patient care. At Parkside Dental our doctors, myself, and our great staff always try to take the extra step to provide top-notch care, and I truly feel that we are all rewarded everyday, when we’re creating beautiful smiles!”

Read about Orthodontics

Dr. Marzie Karkhanechi, DDS


Dr. Marzie Karkhanechi received her Bachelor’s degree from University of California, Davis after which she moved to New York to attend the prestigious New York University dental school where she received her doctor of dental surgery degree (DDS) in 2003.  Dr. Karkhanechi entered the Orthodontic residency program at NYU where she completed her post-doctoral education in orthodontics and received an orthodontic specialty certificate.  After graduation, she moved back to California and started her orthodontic career in the bay area.

 Dr. Karkhanechi feels extremely privileged to be working in the field of orthodontics where she has the opportunity to create beautiful smiles and ultimately be rewarded by her patient’s satisfaction.  Her goal as an orthodontist is to give every child, adolescent and adult a healthy, beautiful smile. Dr. Karkhanechi constantly strives for excellence in her professional life.  She embraces today’s advanced techniques and stays up to date on the latest orthodontic and dentofcial orthopedic advances by attending numerous continuing education courses and subscribing to relevant professional journals.  Her research has been published in leading scientific journal.  

Dr. Karkhanechi aims to deliver a higher level of care that fits each individual’s needs.  She sincerely appreciates the trust her patients and their families place in her and her team to provide their orthodontic care.

She is a member of a number of dental organizations:

  • American Association of Orthodontists
  • Pacific Coast Society of Orthodontists
  • American Dental Association
  • California Dental Association
  • Contra Costa Dental Society

Dr. Karkhanechi currently resides in Danville with her husband Sam and her two sons Darian and Daniel.  When she is not working, she enjoys playing the piano, doing Pilates and going on biking trips with her family.  

Dr. Victor Hwang, DDS


Dr. Victor Hwang is a native of the East Bay Area. He was born in San Francisco and raised in Walnut Creek. He received his Bachelor's degree in Microbiology and Molecular Genetics at UCLA as an undergraduate. He attended Northwestern University Dental School in Chicago and received his Doctor of Dental Surgery degree in 2001. He decided to pursue further training in dentistry by completing a one year fellowship in general dentistry at the Harvard School of Dental Medicine in 2002. He returned to the Bay Area to practice full time in private practice as a general dentist for about 3 years in Pleasant Hill, California. During that period he also served as a part time clinical instructor at the UCSF School of Dentistry. After practicing general dentistry, he discovered his passion in dentistry was in endodontics. He continued his training and received his endodontic specialty certificate from the New York University College of Dentistry in New York City. Currently, he is a member of the American Association of Endodontists, California Dental Association, and Southern Alameda Dental Society. He was immediate President of the Northern Californa Academy of Endodontists (NCAE) in 2016 after serving on the board for the previous 3 years.

Dr. Khurram M. Shahzad, DDS, MD

Oral and Maxillofacial Surgeon

Dr. Khurram Shahzad grew up in Long Island, New York. He attended the State University of New York (SUNY) at Stony Brook where he majored in Biology and graduated with honors.  He then attended New York University (NYU) for dental school (DDS) and graduated in 2002 at the top of his class.  After that Dr. Shahzad completed his Oral and Maxillofacial surgery training at the Long Island Jewish Medical Center in Long Island, NY. During this period, he also received a doctor of medicine degree (M.D.) as well as completed an internship in General Surgery.  After graduation, Dr. Shahzad went on active duty with the US Air Force and worked in Japan for three years at the US base. Next, he was stationed in England for four years at the US base there. Following England, he came back to the United States and is now stationed at Travis Air Force Base in California where his duty is primarily to teach and train future Air Force Oral and Maxillofacial Surgeons.   

He enjoys providing direct oral surgical and anesthesia care to patients. He is a member of the American Association of Oral and Maxillofacial Surgeons and is board certified by the American Board of Oral and Maxillofacial Surgery.   He also holds life support certification in BLS, ACLS, and PALS.  Dr. Shahzad enjoys traveling, music (especially Northern Indian Classical music), hiking, racquetball, tennis, and spending time with family and friends. 

His philosophy on life is simple:  Follow the golden rule, “Treat others as you would like to be treated”.

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Parkside Dental Care
Creating Beautiful Smiles
(707) 898-1216

Parkside Dental Care | 1325 Travis Blvd D, Fairfield, CA 94533

Phone: (707) 427-2222