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Sleep Center (844) 409-4657

290 E John Carpenter Fwy #2700
Irving, TX 75062

Meet the Dental Team

Meet Our Compassionate staff

At 21st Century Dental, our doctors couldn’t accomplish anywhere near as much as they do in a day without the ongoing support of a truly extraordinary team. Our front office staff, dental assistants, and hygienists are a well-oiled machine, helping every appointment run smoothly and pleasantly for patients in need, and their knowledge and passion for oral healthcare is unmatched. They can’t wait to get to know you! Keep reading below to learn more about each wonderful member of our practice.

Hover and Click on a Team Member to See and Read More About Them!

Front Office

Felicia Calloway Treatment
Coordinator

Felicia Calloway Treatment
Coordinator

Felicia Calloway

Treatment Coordinator

Felicia came to us in 2011 from the retiring state of Florida, because, frankly, she wasn't ready to retire. No one retires in Texas. Actually, horseback riding is what brought her here...well...no, she took a plane from Florida (for the fifth graders reading this), but she does love horses. And Charlie Sheen.

Seen with Orlando Jones here, Felicia has clearly gone all Sheen on us when we heard her exclaim: "I'm not bi-polar, I'm bi-winning. I win here, and I win there." Give it a rest, Felicia. That's just a cardboard cutout of Orlando.

Felicia was actually born in Wichita, KS, but since no one has actually LIVED in Kansas as far as we know, we just say she's from "up north." She has worked in the dental field as a chairside assistant for 16 years (started when she was 4), so she can answer most any question you ask her. In fact, as a production assistant for a fashion trade show, she can also give you some clues on what to wear to a dental office. (Hint: dress for comfort!)

Truthfully, we LOVE Felicia's Broadway smile. If we had a dime for every time we saw her without a smile, we still couldn't buy a stick of gum. And yes, we would still be saying this if she DIDN'T have a Doberman named Napoleon.

Jordan Mote Clinical
Administrative Lead

Jordan Mote Clinical
Administrative Lead

Jordan Mote

Hygiene Coordinator

Jordan is our superstar hygiene coordinator, making your clean dreams come true! We are lucky to have her in our neck of the woods. She grew up in Tyler but couldn’t keep her mind off of the big city (and 21st Century Dental & Sleep Center), so she moved to Dallas with a dream… and Bambi and Duchess. No, not the cartoon or aristocracy – they’re her two cats that have the esteemed label of her sweet babies.

Make sure to keep your cleaning appointments – Jordan is a master at disc golf and could wipe you out with the flick of a wrist. When she’s not impressing everyone at the office, you can find her listening to great music and sipping a glass of vino. She’s got a smile that lights up the room and enthusiasm that is contagious. Our team is proud to call her one of our own!

Katherine Randall Business
Administrative Lead

Katherine Randall Business
Administrative Lead

Katherine Randall

Treatment Coordinator

Kat came to us in 2017 with one thing in mind. She wanted to make 21st Century Dental & Sleep Center the premier place in Texas for all dental and sleep concerns. When we told her we were there already, she said “See how quickly I can get things done?” We love our Kat because she brings energy and a beautiful smile to work every day.

Kat is a newlywed (married to Heath) with no children (yet), but the doctors here act like children at times, so she has her hands full. She loves reading and drinking wine, so reading about wine is her favorite pastime…. well, except for going to musicals. At last count, she has been to over 100! If you ask sweetly, maybe she will sing a few bars of “Beauty and the Beast.” For you. Come say hello to Kat – but please, no meowing. Her request. Don’t shoot the messenger.

Anahi Martinez Guzman Insurance
Coordinator

Anahi Martinez Guzman Insurance
Coordinator

Anahi Martinez Guzman

Insurance Coordinator

One of the smiling faces to greet you as you come into our office belongs to Anahi. She is a true Dallas girl having grown up in Oak Cliff and loves cheering on the Dallas Cowboys and Texas Rangers any time she can. With her big heart and love of kids, Anahi is currently studying to become a pediatrician. When she’s not playing with her Maspyr, Zues, you can find her enjoying time with friends and family. She is a foodie and, when she’s not trying new restaurants, she loves to try new recipes and cook at home. She also loves painting in her free time. We are so glad to have her on our team, make sure to say hello at your next appointment!

Phoebe Olvera Administrative
Assistant

Phoebe Olvera Administrative
Assistant

Phoebe Olvera

Administrative Assistant

Phoebe is our front desk rockstar ready to greet you with a smile when you come into the office. She is incredibly artistic and loves painting and drawing, and any project that has to do with makeup application and design. She also provides lash services when not in the office. Make sure to check out her beautiful lashes when you come in!

While she doesn’t have any pets (yet) she loves animals and has spent lots of time volunteering taking care of stray pets. Her volunteering has even taken her across the country. Her kind and loving heart is one of the things we love most about her.

Phoebe loves coffee having worked at Starbucks prior to her position at 21st. She loves finding local coffee shops all over DFW and supporting the small businesses. No doubt her years in customer service there trained her to provide amazing service to our patients. Phoebe is phenomenal!

Amanda Jackman Administrative
Assistant

Amanda Jackman Administrative
Assistant

Amanda Jackman

Administrative Assistant

Amanda will be one of the first smiling faces to greet you as you come in for your appointment.

She is a self-proclaimed nerd and loves Star Wars, Harry Potter, and Lord of the Rings. She can still rock a good Disney movie when she’s feeling it. She loves to crochet, watch movies, play video games, and go to the gym. She is known to be adventurous with her food choices and will try anything new. We do have to remind her that Starbucks is not her third home. Her fiancé, Michael, and her son, Jensen, are good about reminding her too.

Amanda has the commitment of putting others first. She always volunteers to do a job with that 21st Century signature “happy to do it!” She is always helping patients and team members alike, but will always stop to make sure she has a friendly hello or positive word to give.

Emily Bernardo Administrative
Assistant

Emily Bernardo Administrative
Assistant

Emily Bernardo

Administrative Assistant

Emily is known for her great attitude and heart for serving others. She has a busy life outside of the office. She loves spending time with her husband, Adam, their beautiful daughter, Eden, and her 3 furbabies Omen, Linus, and Kitty. Her commitment to care is also reflected in her other hobby of gardening.

She stays busy working out and you can catch her at the gym 6 days per week! She loves traveling and spending quality time with her husband, family, and friends. With her big heart it is no surprise her dream in life would be to own a farm with lots of animals and grow her own food. We love having such a kind hearted team member we can always look to for a smile and encouragement.


Dental Hygienists

Cameron Caywood Registered Dental
Hygienist

Cameron Caywood Registered Dental
Hygienist

Cameron Caywood

Registered Dental Hygienist

Cameron came to 21st Century Dental in 2003. We weren’t really looking to add a fourth hygienist at that time, but her magnetic and energizing personality left us no choice. When you see her smile, you will understand. She and her husband Tracy enjoy sports and competition, illustrated by the fact they own their own bowling balls. You can find her after hours using our hallway for practice. They have gradually migrated to the links, however, because Cameron can drive her cart and not worry about getting pulled over there

Growing up on Lake Bridgeport, Cameron has been skiing her whole life and enjoys liberally defined water sports like fishing and snow skiing. Other interests include softball, putt-putt and spoiling her weenie dogs Georgia and Daisy with food scraps from the table.

Cameron and Tracy have two wonderfully engaging children named Madeline and Samuel. As we have no photos to share here, we must assume that she has rather lackluster and ambivalent attitude towards her children, but rest assured, she cares for her patients, so come meet Cameron soon. If you see any photos of the kids, sneak one to us!

Lil Ortega Registered Dental
Hygienist

Lil Ortega Registered Dental
Hygienist

Lil Ortega

Registered Dental Hygienist

Born in Southern Brazil, meet Maria Leopoldina Ortega... we just call her "Lil." She's one of the smiling faces in our office on the dental hygiene team and just your average Brazilian (thought that was a big number, not a country, but always willing to learn) girl in the US working on the thing she loves most - teeth (whatever). Dr. Roy met her on a mission trip in Mexico, bragged about her to Dr. Smith and our office manager for two years, and "the rest is history" as they say.

Lil is raising 2 lovely children, a red-headed firecracker named Joseph and a sweet princess named Claire Marie. They are blessed to have two elder dogs named Bernard and Socks as well. Lil loves to travel, be with her family, and save dogs. She is a consummate professional in all that she does, save for "talking sports." Lil has a BIG heart, and I'd say it's "one in a Brazilian!" (whoops, country, not number). She loves to help people and can't drive by a stray dog without picking it up. They have a third dog named "Girlie" (guessing it's a male) because they couldn't find her owner. In Texas, we say folks like Lil are "sweeter than Molasses,” and we could tell you a Brazilian (don't try and stop us) ways that's true for her.

Jenna Williams Registered Dental
Hygienist

Jenna Williams Registered Dental
Hygienist

Jenna Williams

Registered Dental Hygienist

Our lovely hygienist Jenna is a do-it-all mom and wife. She and her husband Eric run a hectic household with a 3 year old, a 6 year, old and an A&M student on their hands. They’re super proud of Dominique, he drank the A&M kool-aid like mom and dad. Despite running such a busy family she and Eric enjoy gardening, hiking, skiing, boating, going anywhere with a beach or mountains. They’re also avid dancers (maybe she’ll show you some moves) and love just hanging out on the patio enjoying good times with family and friends. A huge testament to their undying love is the fact that they completely remodeled their own home (just the two of them) and are still married!

At your first chance come in to say hi and get your teeth cleaned with Jenna. From receiving loads of patient education, to a sweet demeanor, to the most gentle hands ever, you will finish your appointment as in love with her as we are!

Diane Nguyen Registered Dental
Hygienist

Diane Nguyen Registered Dental
Hygienist

Diane Nguyen

Registered Dental Hygienist

Meet one of our amazing hygienists: Diane! She’s a laidback type of girl who loves to travel, hike, do crafts, and try new places to eat. She may not sing to you during your appointment, but you should know that there’s hidden talent there. She just needs a microphone and a mediocre speaker to sing the greatest hits in karaoke. When she’s not on tour behind the scenes, she is cleaning teeth and getting our patients healthy one mouth at a time.

Diane is a graduate of the University of Texas at Arlington and received her degree in dental hygiene from Tarrant County College. Her parents moved here from Vietnam in 1982, and she was born and raised in the US. She speaks Vietnamese, which adds another language spoken to the long list of spoken languages at 21st Century Dental & Sleep Center. We know you’ll love Diane as much as we do, so come visit her today!

Thu Nguyen Registered Dental
Hygienist

Thu Nguyen Registered Dental
Hygienist

Thu Nguyen

Registered Dental Hygienist

Our lovely hygienist Thu is someone you don’t want to miss meeting in our office. Her big smile and cheerful attitude reflect the entire culture of your favorite dental office and we are thrilled to have her with us. When she’s not here, she’s enjoying traveling and snowboarding with her husband!

After graduating from the Baylor College of Dentistry in 2009, Thu embraced her “calling” – as she sweetly puts it – to be an amazing hygienist and mentor to her patients. Her attitude of service is outstanding, and she inspires us all to follow the same role in and out of the office. Thu is known for being the “tooth whisperer” with her gentle hands and demeanor. A devoted fitness advocate and someone who maintains close ties with her family, she consistently strives for healthy and impactful relationships in her personal and professional life. Come meet this wonderful hygienist at your next appointment!

Aidé Núñez Registered Dental
Hygienist

Aidé Núñez Registered Dental
Hygienist

Aidé Núñez

Registered Dental Hygienist

Aidé was born and raised in Oak Cliff, and if you can name the other person at 21st born there, we will give you an extra cookie on your next visit. She has a Spanish degree from UNT, so if any of our 12 other bilingual team members are unavailable, she can translate for you. She loves to eat her mom’s enchiladas, but if you have seen Aidé, they must be low in calories.

Aidé is married to her high school sweetheart Juan. In their free time, they love to dance and vacation on the beach. When they combine those activities, it can get quite embarrassing. Most importantly, she serves the children at her church through teaching by words and example. We know you will love Aidé because she transfers her passion of service to the dental field, where she strives to make her patients feel comfortable with their smiles.

Leisa Decoster Registered Dental
Hygienist

Leisa Decoster Registered Dental
Hygienist

Leisa Decoster

Registered Dental Hygienist

Leisa joined 21st Century Dental with 36 years of experience behind her name. Originally form Louisiana, she made the right decision to live in Texas and has been located out of Conroe, TX much of her life. When she isnít practicing her dental hygiene skills in the office she can be found loving life with her fiancÈe Martin (and high school sweetheart) and 2 sons, Cole and Carson. She is a woman of many talents and loves spending her time outside of the office hiking, gardening, dancing, traveling, and the list goes on and on. With that heart of gold, big smile, and love of living a happy and well-rounded life, Leisa is the hygienist to meet when you want a big dose of positivity in your day! Come meet our fantastic and dedicated Leisa at your next cleaning!


Dental Assistants

Natalie Donofrio Registered Dental
Assistant

Natalie Donofrio Registered Dental
Assistant

Natalie Donofrio

Registered Dental Assistant

Where do we start here? Girl grows up in Dallas, moves to Phoenix, then moves back home to the Big D thinking she's a Phoenix Suns fan, God forbid. How did that little nugget sneak past our doctors in the interviewing process?

Dancing with the Stars is a way of life in the Castillo household, and there's no need to wait until Saturday Night to catch the fever! An accomplished assistant, Dr. Roy is elated to have found Natalie. She's steady, calm, and more than able to handle the gale force winds of life and practice! Now back to those sports alliances?

Lissette Gurrola Registered Dental
Assistant

Lissette Gurrola Registered Dental
Assistant

Lissette Gurrola

Registered Dental Assistant

Sasha Johnson Registered Dental
Assistant

Sasha Johnson Registered Dental Assistant

Sasha Johnson

Registered Dental Assistant

Bio Coming Soon!

Selena Carlos Dental Assistant

Selena Carlos Dental Assistant

Selena Carlos

Dental Assistant

Selena is our rock star hygiene assistant! Being a Texas girl born and raised she likes to work hard and have fun doing it. She makes sure our entire hygiene department runs smoothly on the clinical side of things. This isn’t surprising being that she is the oldest of four siblings and used to a leadership role of responsibility. Her interests include movies (especially Disney!), music, and history. She enjoys baking and crafting, funny enough, two of the messiest pastimes one can have! When you come to the office and interact with her you’ll see the shining personality that reflects her love of family, friends, patients, and faith. We are so grateful she is on our team and know you’ll adore her too!

Pennie C.Orthodontic Technician

Pennie C. Orthodontic Technician

Pennie C.

Orthodontic Technician

Pennie is our amazing orthodontic technician and is in the business of making your smile the best it can be with cosmetic braces and clear aligners. When she’s not helping our patients meet their straightening goals she has a busy life, she’s married with 3 kids and 6 grandkids. She loves having a big family, it makes sense being the youngest of 9 kids herself! She also is a proud dog mom of her Shih Tzu puppy. She loves music, dancing, good food, and spending time with her friends and family. Her strong work ethic is appreciated every day and her daily affirmation at the office is “Making patients smile shine is my life’s work.” Let her help make your smile stand out in the crowd and visit with her today!