Meet our doctors

Patuxent Dental

Dr. Amit Khanna (DMD, DDS)

Dr. Amit Khanna was born in Wilmington, DE and takes pride in helping patients achieve their ideal smiles. After attending one of the few Ivy League dental schools in the nation, he keeps up with the latest dental techniques and procedures through monthly Continuing Education classes. He is involved in the community, he volunteers with Mission of Mercy, does food drives for the local food band in Southern Maryland, and does drives for the Pregnancy CareNet in Southern Maryland. Dr. Khanna won the 2016 Beacon Award through the St. Mary’s Chamber of Commerce. Dr. Khanna was written up in a national dental magazine Dental Economics. Education Georgetown University (B.S.) University of Pennsylvania (D.M.D.) Monthly Continuing Education Courses Professional Memberships

• American Dental Association

• Maryland State Dental Association

• Former Patuxent Dental Society Executive Board member

• Care First Dental Advisory Board Dr. Khanna married his wife in 2003 and they currently live in St. Mary’s County with their cocker spaniel, Ruby, and puggle, Minnie. They have two daughters who are the joy of their lives. In his spare time, Dr. Khanna enjoys scuba diving, watching the Washington Redskins, and playing video games.

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Dr. SharminMeraj (DDS)

Dr. SharminMeraj joined Patuxent Dental in 2013 and began her dental career in 1998. After receiving her B.S. in Biology from Lafayette College, she worked as a research assistant at Strong Memorial Hospital in Rochester, NY. She was accepted to Columbia University College of Dental Medicine, in New York, where she received her DDS degree in 1998. She completed her General Practice Residency (GPR) at Staten Island University Hospital before practicing for four years in private practice in Manhattan. During this time she completed a maxi course in dental implants and has been placing implants since 2004. She relocated to Maryland and has practiced in Charles, St. Mary's and Calvert counties since 2003. Her dental interests include cosmetic and implant dentistry. She hopes to make every patient's dental experience gentle and effortless.

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Dr. Randeep Sidhu (DDS)

Dr. Sidhu grew up in Montgomery County, MD.  After finishing High School, he left Maryland for California where he became interested in Dentistry and worked as a dental assistant while getting his Bachelor’s degree.  He returned to Maryland and worked in research at the National Institute of Health.  However, the deep interest in dentistry pressed him to change careers from research to pursue Dental School.  After graduating from Dental School, he elected to pursue a General Practice Residency at the University of Rochester Medical Centre.  This residency allowed him to gain valuable experience in treating patients with varied health issues and to expand his surgical skills.  He continues to expand his dental knowledge by pursuing continuing education courses and attending local dental society meetings.

Dr. Sidhu takes pride in being a transparent practitioner and welcomes patient input when formulating treatment plans.  He appreciates that dentistry cannot be practiced with a broad brush and seeks to tailor treatment to each patient’s needs.  

In his free time, he enjoys going for bike rides, hiking and taking road trips with his wife.  Travelling that allows him to immerse himself into different cultures particularly interests him.  His favorite destination thus far has been Japan.  


University of California at Santa Barbara

Bachelor of Science in Cell and Developmental Biology

Western University

Doctor of Dental Surgery

General Practice Residency

University of Rochester - Eastman Institute of Oral Health


American Dental Association

Maryland State Dental Association

Southern Maryland Dental Society

Patuxent Dental

Dr. Abubakr Shafi (DDS)

Dr. Abubakr Shafi is a practicing full time general dentist at Patuxent Dental. After receiving his undergrad degree at UMBC in Maryland, he completed his dental education at Howard University in DC. He went on to complete general practice residency at Saint Francis Hospital in Hartford, CT where he received the award for the best dentist in the program for Comprehensive Dentistry.

Dr. Shafi strives to provide excellent dental care by listening to his patients' needs, educating them, and developing a personalized treatment plan that will allow them to have a healthy beautiful smile.

During his free time he enjoys taking part in outdoor activities, traveling, BBQing, and spending time with his wife.

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Dr. Christopher Haviland (DDS)

Dr. Haviland is new to our patuxent dental team. His bio will be available shortly. Thanks for your patience!

Meet Our Staff!

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Tammi Auman Office Manager

Hi! My name is Tammi Auman. I am the Office Manager at Patuxent Dental. I have worked for Patuxent Dental for 10 years. I started working in the dental field 20 years ago as a chairside assistant. I grew up in Charles County and I currently reside in St. Mary’s County with my husband, two sons, and dog. In my spare time I enjoy spending time with family and friends.

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Bryana Hinson-Nelson Office Manager Assistant

Hi! My name is Bryana, I am the office manager assistant here at Patuxent Dental. I am a southern Maryland native and I would not trade that for the world. I graduated from Chopticon high school in 2015 not only with my diploma but also with an endorsement for completing the academy of finance and other dual enrollment programs! I have also completed College of southern Maryland’s Dental assistant program. Completing this course allowed me to sit for the Maryland Dental Assisting National Board (DANB)  state issued  exam where I earned my radiology license. When I’m not working at the greatest dental practice in the world I enjoy, hiking, kayaking, fishing, cooking and spending quality time with my family, friends, boyfriend and our fur babies Saboo and Beta!

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Kari Gordon Registered Dental Hygienist (Team Lead)

Kari joined Patuxent Dental in September of 2012 when she and her family moved to Maryland after her husband Keith retired from 20 years of serving as a helicopter pilot in the US Navy. She has been a Registered Dental Hygienist since 1994 when she graduated with Honors from Pensacola Junior College. She also holds her Bachelor’s degree in Social work from the University of Iowa where she graduated in 1990. Kari was born and raised in Dubuque Iowa. She has lived in Pensacola, FL; Corpus Christi, TX; San Diego, CA; Kailua, HI; Newport, RI and currently resides in Huntingtown, MD.
She has been a Hygienist in many specialty practices including Periodontics, Pedodontics and General dentistry. She is licensed to administer local anesthesia and keeps up with the most current dental research and technology through her continuing education. She is extremely dedicated to the oral health of her patients and strives to make each of their visits pleasant, comfortable and efficient while educating them on how to best maintain healthy teeth and gums.

kristens Bio

Kristen Pierce Registered Dental Hygienist

Kristen is one of our Registered Dental Hygienists. She was born and raised in Morgantown, West Virginia. She discovered a love of the dental field young. She received a Bachelor of Science in Dental Hygiene from West Virginia University School of Dentistry in 2010. After graduating with honors, Kristen moved to Southern Maryland where she has been practicing dentistry since.

Kristen joined Patuxent Dental in 2014. She loves meeting new patients and making sure they have a pleasant experience. She is very passionate about her work and very efficient which ensures her patients leave happy and with a good understanding of their dental needs.

Kristen loves to work on her continuing education in her down time. She prides herself in staying up to date with the newest advancements in dental hygiene. She currently holds extra licensure to administer local anesthesia as well as to administer and monitor nitrous oxide sedation.

Kristen is very active in the community. She is regularly participating in raising money for charities and volunteering with Patuxent Dental.

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Amanda Jones Registered Dental Hygienist

Hi! My name is Mande Jones. I am a Registered Dental Hygienist and couldnt't be happier to be a part of the team at Patuxent Dental. I started working in the dental field as a chairside dental assistant during my senior year of Highschool. I continued school at Baltimore City Community College, graduating and earning an Associate of Applied Science in Dental Hygiene in 2004. My goal is to always provide patients with quality care and comfort. In my spare time I enjoy painting/drawing, music, documentaries, hiking, travelling and spending time with family and friends. If I haven't met you yet I look forward to seeing you in the office soon! 

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Kaitlyn Niemiec Registered Dental Hygienist

Hi, my name is Kaitlyn Niemiec and I am a Registered Dental Hygienist here at Patuxent Dental. I was born and raised in St. Mary's County and absolutely love it here! In 2018 I graduated from Fortis College in Landover, MD with my Associate of Science Degree in Dental Hygiene. As a dental hygienist, I love helping patients by making sure their trip to the dental office is an enjoyable one!
Volunteering and giving back to the community is something that is very important to me. I have participated in multiple Mission of Mercy, Team Smile and Free Dental Day events.
When I'm not at the office, I enjoy spending time with my family, husband and miniature schnauzer Koda.

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Crystal Dental Assistant Team Leader

Hi, I’m Crystal one of the Dental Assistants here at Patuxent Dental. I’ve been a dental assistant for five years now and absolutely love seeing my patients smile! I am a born and raised Maryland girl and plan on staying here for a very long time! I love spending time with my family, I have a busy three-year-old son and a fiancé! We plan on tying the knot soon and extending our family.

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Alyssa Guertin Dental Assistant

Hi! My name is Alyssa and I have been a dental assistant since 2016. I love working hard, being involved in patient care, and making sure that the patient has a great experience! I live in St. Mary’s with my fiancé and dog... I can’t live without family, laughter, good food, and to be surrounded by happy people!

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Jackie Thompson Dental Assistant

Hi I'm Jackie I'm one of the dental assistants here. I have been in this profession since 2016. I graduated from the dental assisting program at the Dr. James A Forrest Career and Technology center. I Enjoy coming to work everyday helping improve patient smiles in a comfortable environment.  I am a local county girl, born and raised of course. When i'm not in  the office, I like to spend time with family and friends. I also enjoy cleaning and modifying my truck for local truck shows as well as cuddling with my fur baby Ellie Mae.

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Sara Wilhelmi Dental Assistant

Hi there! My name is Sara Wilhelmi and I’ve been working at Patuxent Dental since April 2019. While being a baker and working in the kitchen has been fun, I’m eager to pursue a more fulfilling career while getting to know all the lovely people I’ll be working with!

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Jackie Ellis Dental Assistant

Hi! My name is Alyssa and I have been a dental assistant since 2016. I love working hard, being involved in patient care, and making sure that the patient has a great experience! I live in St. Mary’s with my fiancé and dog... I can’t live without family, laughter, good food, and to be surrounded by happy people!

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Sam Payne Dental Assistant

Sam is new to the Patuxent Dental family and her content will be up shortly. Thanks for your patience! 

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Kayanna Cunic Dental Assistant

Hi! My name is Kayanna. I am a Dental Assistant here at Patuxent Dental. I absolutely love working here and making sure every patient feels comfortable when coming into our office. I graduated from Chopticon in 2019 and on my free time I enjoy spending time with family and friends!

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Shelby Wood Hygiene Assistant

Hi name is Shelby! I am the hygiene assistant here at Patuxent Dental. I assist all 7 hygienist. I really enjoy working here with the amazing staff. I am currently taking courses to excel in my career here at Patuxent Dental. These courses will allow me to be more involved in patient interaction. Outside of work i am a busy mom of three. I love spending time at the beach and with my kids. I look forward to meeting you soon!

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Melanie Downs Hygiene Assistant

Melanie is new here to patuxent dental. 

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Tammy Barbour Director of Laboratory Services

Hi! My name is Tammy Barbour, and I have been a dental assistant for 26 years. I have been working with Dr. Khanna since 2006. I am a mother and grandmother, and in my spare time I love spending time with family and friends, fishing, and cooking.

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Amy Acree Billing Specialist

Amy started her dental career in 2000 as a Registered Dental Assistant after graduating from Palomar Community College's dental assisting program. She worked as a chair side assistant for 10 years, adding an Expanded Functions Dental Assisting (EFDA) license in 2006 after graduating from Harcum College's EFDA program. In 2010 Amy took her knowledge and experience from the back office and became a Treatment Coordinator in the front office. Amy joined the Patuxent Dental team in August 2015 when she moved from California to Maryland.

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Shannon Crawford Billing

Hi! My name is Shannon and I am apart of the billing team here at Patuxent dental. I enjoy spending time with family , friends, and my two daughters!

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Ashley Knott Team Lead of Patient care Coordinators

Hello! My name is Ashley and I am the team lead of patient care coordinators here at Patuxent Dental. I started my dental career in 2009 when I landed an internship with a local dental practice and was able gain experience in many areas, since then I have loved the dental field! I was born and raised right here in St. Mary’s county where I also continue my education at CSM in business management.  In my spare time you can find my family and I at the dirt track or laying by the pool!

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Callie Franzen Patient Care Coordinator

Hello,I’m a Midwest girl who fell in love with the east coast. I have been in the dental field for 2 years now, starting out as a dental assistant and now working up front with the amazing staff at Patuxent Dental. In my free time I enjoy hanging out with my family and friends. I’m obsessed with my german shepherd Xena, coffee is my best friend , and I love being outdoors.

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Lisa Elsbree Patient Care Coordinator

Hey there! I’ve been with Patuxent Dental since 2017. Originally from Virginia, I moved to Maryland after marrying the love of my life, Josh. In my spare time I enjoy relaxing with my hubby, playing Xbox, hiking, and spending time with family and friends. See ya at the front desk!

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Brittany Lacey patient care coordinator

Hi. My name is Brittany. I am born and raised here in Southern Maryland. I am new to the dental field. I previously worked in the heating oil and HVAC industry. Big change in career path but I absolutely love my job here at Patuxent Dental. I enjoy spending time with family and friends, going camping and working on craft projects when I have free time.

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Cory Turner Patient Care Coordinator

Hello, I’m Cory - I am new to the dental field but I am excited to see where this journey takes me. I am thankful I was given the opportunity to work with Dr Khanna and the rest of the Patuxent dental team. 

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Michele Altman Patient Care Coordinator

Hello! My name is Michele, i've been with Patuxent Dental for a year now and I am absolutely honored to apart of Dr. Khanna's team. I have served in the dental field for 10 years now. In my spare time I enjoy adventures with my boyfriend tony and I am totally obsessed with my grandchildren. Family & friends are life and I believe that kindness is free!!!