Meet our doctors


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

• Dr. Khanna enjoys spending time with his children, scuba diving, watching the Washington Commanders, and playing video games.

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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

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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. Christopher Haviland is a practicing full time general dentist at Patuxent Dental. After receiving his undergrad degree at Salisbury University, he completed his dental education at Howard University in DC. He went on to complete general practice residency at St. Elizabeth’s Hospital in DC.

Dr. Haviland enjoys working with patients to make them feel as comfortable and confident in their smiles as possible.

During his free time, he enjoys playing volleyball, traveling, and going to baseball games.

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.


Brittany Corrigan Assistant Manager

Hi! My name is Brittany, and I absolutely love my job here at Patuxent Dental. I love interacting with patients and I’m always ready to make you laugh with a bad joke. In my free time, I like dancing, board games, and playing Dungeons and Dragons. See you at the office!

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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.

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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.


Michelle Erion Registered Dental Hygienist

My name is Michelle and I am a Registered Dental Hygienist. I began working in the dental field in 2008 as a Dental Assistant before moving into Orthodontics as a Lab Assistant. In 2014 I graduated from Allegany College of Maryland with an Associate of Applied Science in Dental Hygiene. I grew up in St. Mary's County and enjoy being out on the water or on the beach. I like to spend my free time reading, shopping, boating, traveling, or visiting family and friends.

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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.


Angela Wallace Registered Dental Hygienist

My name is Angie Wallace and joined the Patuxent Dental family in 2020. I graduated from Delaware Technical in 1993. I have practiced In southern MD ever since. I absolutely love sharing smiles and helping people achieve their best smile! Outside of the office I enjoy cooking and spending time with my grandchildren.


Kimberly Moreland Registered Dental Hygienist

Kim is one of our registered dental hygienists. She loves working with patients and providing efficient, and compassionate care for each patient. Kim has been in the dental field for 8 years.
Outside of the office she enjoys riding her horses, playing with her dogs, & being on the water.


Kelley Hammett Registered Dental Hygienist

Hi! My name is Kelley and I am a Registered Dental Hygienist. I discovered my love for the dental field in elementary school and knew right away I wanted to be in the field! I completed the dental assisting program at the James A. Forrest Career and Technology Center in 2018 and started hygiene school right after. I graduated with a Bachelor of Science in Dental Hygiene from West Liberty University in May of 2022. I also currently hold extra licensure to be able to administer local anesthesia. As a hygienist, I enjoy being able to create new relationships with patients everyday and provide quality care based on specific patient needs. Outside of work, I volunteer with a local animal rescue and love spending time with friends, family, and my pets!

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Shelby Wood Sterilization Technician

Hi name is Shelby! I am the sterile tech here at Patuxent Dental. 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!

crystal website bio

Crystal Dental Assistant Team Leader

Hey y’all! I’m Crystal, I’m the lead dental assistant here at Patuxent Dental. I’ve been a dental assistant since 2014. I became an expanded functions dental assistant in 2019. I absolutely love seeing my patients smile and making them laugh while also feeling comfortable in the dental chair. 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 and watching my kids play sports. My husband and I have been married since 2021, we have two very busy kids. I hope to see y’all soon!


Alyssa Auman 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 husband and dog... I can’t live without family, laughter, good food, and to be surrounded by happy people!

j2 website updat 20230

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.


Kayanna Cunic Dental Assistant

Hi! My name is Kayanna. I am a Dental Assistant here at Patuxent Dental and I absolutely love working here! I love making sure every patient feels comfortable when coming into our office. I graduated from Chopticon High School in 2019. In my free time I coach a youth level one competitive all star cheerleading team. I am also an all star level six competitive cheerleader at Dynasty Spirit Elite located in Waldorf MD.


Jackie Ellis Dental Assistant

Hello! My name is Jackie, and I am a dental assistant here at Patuxent Dental.  I have been in the dental field for over 15 years now. My family moved to Calvert
County in the late 1980's, now my daughter and I live in Lusby, MD. We love
music, the outdoors, and the long summer nights that are great for
camping! I look forward to meeting you!


Tammy Barbour Sleep Study Coordinator/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 Bearns 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!


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 since 2017, 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 Team Lead of Patient Care Coordinators

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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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!!!

Elizabeth Rock, Patient Care Coordinator

Elizabeth Rock Patient Care Coordinator

Hi! My name is Elizabeth Rock. I have been working at Patuxent Dental for a short time, and I knew I was going to love it here from the first day. I enjoy helping patients and interacting with my co-workers. I hold a cosmetology license in MD from Paul Mitchell. I have two cats I absolutely adore. In my spare time I love hanging out with my nephew, family & friends!


Debra Striep Patient Care Coordinator

Hi! My name is Debra, I recently moved to Maryland from Upstate New York and joined the amazing Patuxent Dental team. I have worked in the dental field for many years, I am incredibly passionate about connecting with patients and easing the anxiety that so often comes with a trip to the dentist! When I’m not working, you can find me binge-watching Seinfeld, hanging out with my daughter, and trying new recipes!