Meet The Staff

Nikki Hartman
Surgical Assistant / Implant Coordinator

I was born and raised on a crop farm in Lamar, Colorado with my brother and parents.  I have been married to my wonderful husband Thom since 1999 and have two beautiful sons, Thomas and Nolan. My hobbies include being involved with my children’s extra-circular activities, running, camping and playing with our Labrador Retrievers Watson and Eddie.  I feel very fortunate to have been “acquired property” when Dr. Esposito purchased the practice.  I have had the pleasure of working with Dr. Esposito since September of 2000 and am currently the Implant Coordinator and a Surgical Assistant.  I am certified in Advanced Cardiac Life Support certified, BLS, Nitrous Oxide, Phlebotomy and by the American Academy of Oral Maxillofacial Surgery in office anesthesia. I feel lucky to work with an smart, talented and compassionate doctor and with a team of women who are dedicated to providing exceptional patient care.


Andrea Davidson
Surgical Assistant

I was born in heaven and fell to earth 25 years ago. I now live in Colorado with my two dogs Roxi and Sake. I attended college at Colorado State University where I majored in Psychology, “Go Rams!” In my free time I love to ride my horse and spend time with my wonderful family and friends. It has been a true joy working for such an amazing surgeon. As a surgical Assistant I have current certifications in BLS, ACLS, nitrous oxide, office anesthesia and phlebotomy.


Danielle Theander

I am a native of Colorado and love the beauty and activities of this state.  I have been married to my wonderful husband, Kevin since 1987.  We have two amazing children, our son Quaid and daughter Sierra.  I enjoy taking walks with my dogs, reading, camping, skiing, and spending time with my family and friends.  I have worked for the Implant and Oral Surgery Center since 2007 and enjoy working with this caring and amazing team of people.  I help the team prepare for each surgery by making sure all instruments are sterilized and ready to go.


Jamie Vigil
Surgical Assistant

I am Colorado born and raised.  I am married and have a beautiful 10-year old daughter.  I went to school for dental assisting, but found myself here instead!  Currently, I am a surgical assistant and am certified in Advanced Cardiac Life Support, Basic Life Support, Nitrous Oxide Administration, Phlebotomy and by the American Academy of Oral and Maxillofacial Surgery in Office Anesthesia Administration.  Dr. Esposito and the wonderful team of women I get to work with everyday are absolutely incredible!  You will find our office is warm and friendly, with exceptional patient care.

When I am not at work, my husband, daughter and I spend most of our time in the great outdoors whether it’s summertime or the snow is falling!  Our free time is spent camping, golfing, tubing and rafting, hiking, biking, cheering on our home town sports teams or catching some rays by the pool in the summer.  And in the winter, you can find us snow shoeing or on the slopes almost every weekend!   We also love cooking and spending our evenings with friends and family over a nice home-cooked meal.



Alix Greenman
Surgical Assistant

I am a Colorado native, born and raised in Littleton with my parents and younger brother, Dylan. My passion is riding and racing motocross. Thanks to my dad, he got me into dirt bike riding when I was four years old and it’s been a big part of my life ever since. I spend the other portion of my free time enjoying the outdoors by running with my dog (Farley), hiking, and snowboarding. I graduated from Columbine High School and began working at the Implant and Oral Surgery Center a few years later in December of 2012. I feel very fortunate to be a part of Dr. Esposito’s amazing team where I have had the opportunity to assist such a skilled surgeon.


Surgical Assistant

I was born and raised in Denver, Colorado, the youngest of three girls. My family has always been very close, and I still spend almost every weekend with my parents and sisters, their husbands, and my nieces and nephew. We spend the summertime boating, camping, “glamping”, and off-roading, but most of the time we get together it’s all about the food! I also spend a lot of time as a Bible tutor and teaching piano lessons. I have had a love and affinity for art and music for as long as I can remember. 

I have been working in oral and maxillofacial surgery since 2009, and I still really enjoy it. As a surgical assistant I have current certifications in BLS and phlebotomy. I have learned so much working for Dr. Esposito, and I’m really glad to be a part of his team. 

Jamie H.
Surgical Assistant 

I am a Colorado native, born and raised with three little brothers and one little sister. I enjoy spending time outdoors, doing anything from hiking to snowboarding, and feel blessed to call this beautiful state home. I love spending time with my friends and family, and that includes my fur kids, Lily and Winston. I love all things animals! I like traveling, going to concerts, cooking, and discovering new restaurants. 

I have been working in healthcare since 2008 with a background of internal medicine, plastic surgery, family practice, and urgent care.  As a surgical assistant I have current certifications in BLS and phlebotomy. I have a lot of enthusiasm for what I do and for working with a surgeon as talented as Dr. Esposito.