Dr. Janice Vlasak Weinman

Dr. Janice Vlasak Weinman is a dentist in Seguin, Texas, who specializes in rendering caring, quality dental care to patients of all ages.

Dr. Weinman received her Bachelor of Science from Texas Lutheran in 1985 and her Doctor of Dental Surgery degree from the University of Texas Health Science Center in San Antonio in 1988.

She opened her solo general and cosmetic dental practice in a beautiful, state-of-the-art facility in Seguin in July 2008. Prior to that, she practiced in Gonzales from 1989 to 2008 and in San Antonio in 1988. Dr. Weinman enjoys all phases of dentistry. She works well with a TEAM of specialists for more complex cases that may require their assistance.

Dr. Weinman is a member of the American Dental Association, Texas Dental Association, River District Dental Society, Texas Association of Women Dentists, the Seguin Area Chamber of Commerce, the Seguin-Guadalupe County Hispanic Chamber of Commerce, and Spirit of Joy Lutheran Church. She is a past president of the Texas Association of Women Dentists and the River District Dental Society.

Dr. Weinman actively attends Spirit of Joy Lutheran Church and enjoys participating in various activities within the ministry.

Dr. Weinman is married to Kevin Seider. After 35 years, God put this wonderful, caring man back into Dr. Weinman’s life, and the two quickly became great friends! God worked everything out so that Kevin was able to transfer his position with the Texas Department of Transportation to the Seguin office in November of 2015, the same month that they were married! The couple especially enjoys spending time together hunting, which is Kevin’s passion.

Dr. Weinman is blessed with a beautiful daughter, Janelle Brooke, who graduated from Seguin High School in May 2014. Janelle is currently attending St. Olaf College in Northfield, Minnesota, a private Lutheran college where she is pursuing an undergraduate degree in biology. Janelle decided to do her undergraduate studies away from Seguin to gain a broader prospective of the world, as she hopes to one day return to Seguin as a dental or medical professional.

The heritage of a Lutheran education runs deep in Dr. Weinman’s family, as both of Dr. Weinman’s parents, all five of her siblings, and numerous family members have attended Texas Lutheran University. The Vlasak Family Scholarship has been established in praise and thanksgiving for the wonderful foundation TLU has given to so many of the family members.

Dr. Weinman’s favorite pastime activities are spending time with the many friends and family she has been blessed with. She also enjoys swimming, reading, and watching basketball.


Meet Our Team


Crystal Guerra, Office Manager
Crystal was introduced to our practice in October of 2008 as an extern in training from Kaplan Career Institute. She was then offered a position as a Registered Dental Assistant and is certified to place sealants and do coronal polishing. Crystal has now been promoted to Office Manager, specializing in scheduling and accounts receivable. Crystal loves her job and being part of a great TEAM which strives to create and maintain beautiful smiles! She enjoys spending her free time with her husband, Michael, and their children.


Sharon Herbold, Business Assistant
Sharon joined Dr. Weinman’s TEAM when she opened her state-of-the-art practice in July 2008. Sharon is a 1980 graduate of Texas Lutheran College, where she earned her Bachelor of Arts in Accounting. Sharon’s responsibilities include accounts receivables, billing, insurance matters, and various other day-to-day operations of the office. Sharon likes spending time with her family, baking, and reading a good book.


Shyla Vick, Business Assistant
Shyla Vick joined Dr. Weinman’s TEAM on March 2016. She is a native of West Texas and spent most of her youth in Seminole. After graduating high school, she moved to Missouri, where she completed her certification as a paralegal. Shyla felt the need to be closer to family, so in 2006 she came back to Texas, making her home in New Braunfels. In 2013, she married Randy and together they are very busy with their four children. Shyla and Randy enjoy traveling, shopping, and spending quality time with their family.


Lindsay May, Marketing Manager
Lindsay joined the Seguin Smiles TEAM in January 2013 as our Marketing Manager. In 2005 she attended San Antonio College of Medical and Dental Assistants, where she received her Registered Dental Assistant Certificate. In 2009, she earned her Coronal Polish and Sealant Certification. She loves educating people and children in the community about dentistry and oral health. Lindsay’s favorite thing about working at Seguin Smiles is the Christian atmosphere and that everyone that walks through our door is treated like family. When Lindsay is not working she loves spending her time with her husband, Brandon, and their two children. She also enjoys antique shopping and making wood projects.


Tiarra Miranda, Registered Dental Assistant
Tiarra graduated from Canyon High School in 2012. She joined the Seguin Smiles TEAM in June 2016 after attending Texas State University, where she graduated with a Registered Dental Assistant Certification. Tiarra’s favorite things about working at Seguin Smiles is the friendly environment and getting to know patients. Tiarra is from New Braunfels, and she moved to Seguin after marrying her husband, Gabriel, in 2016. Outside of work, Tiarra loves to spend time with her husband, their fur babies, and their families.


BriannaAnthony Castillo, Registered Dental Assistant
Anthony was born and raised in Seguin and graduated from Seguin High School in 2014. Anthony attended Texas State University, where he graduated with a Registered Dental Assistant Certification. Anthony started his externship at Seguin Smiles, which led him to join the TEAM in August 2017. One of Anthony’s favorite things about Seguin Smiles is being able to use his artistic skills in the dental lab. In Anthony’s spare time, he likes to work on art projects consisting of drawings and paintings. Anthony also enjoys spending time outside with his dogs and the company of his friends.


BriannaMichelle Rios, Registered Dental Assistant
Michelle graduated from Seguin High School in 2014 and joined the Seguin Smiles TEAM in June 2018. Michelle was born and raised in Seguin. Michelle attended Kaplan College where she graduated with a Registered Dental Assistant Certification. Michelle’s favorite thing about Seguin Smiles is working with her friendly co-workers. Michelle has been married to her husband, Noah, since August 2015 and they have two girls together. In her spare time Michelle enjoys spending time with her family.


Tiffany Frothingham, Registered Dental Hygienist
Tiffany joined the Seguin Smiles TEAM in August 2013. She graduated with honors from The University of Texas Health Science Center at San Antonio in 2011, where she earned her Bachelor’s of Science in Dental Hygiene. She was president of her graduating class, which included leading her fellow hygiene students and assisting in imperative decisions for the class. Like some of the other members of the TEAM, she also attended Texas Lutheran University for a short period of time. Tiffany has some experience in dental assisting, as well as in hygiene recall and insurance. Tiffany and her husband Jeff have been married since 2013. They have two girls, Kylie and Kinley. She enjoys spending her time with her family and friends in her free time. She also enjoys hunting and being outdoors!


Amanda Zunker, Registered Dental Hygienist
Amanda joined our Seguin Smiles TEAM in August 2016. She graduated Summa Cum Lade in 2012 from The University of Texas Health Science Center in San Antonio with a Bachelor’s of Science in Dental Hygiene. Amanda enjoys working for Seguin Smiles because this office is a patient-centered practice where the main goal is to treat and educate our patients on ways to make their oral health the best that it can be. Amanda has been married to her husband, Kade, since 2012. They have one son, Lucas, who brings them so much joy!


BriannaBrianna Vogel, Registered Dental Hygienist
Brianna joined our Seguin Smiles TEAM in June 2018. Brianna hails from the Texas Panhandle, but moved to Seguin after her husband’s job got transferred to the area. Brianna attended Amarillo College, where she graduated in 2017 with an Associate of Science degree in Dental Hygiene. Brianna enjoys working for Seguin Smiles because it is a state-of-the-art practice, where patient care and comfort is the number one priority. Brianna loves working in the dental field and building relationships with her patients. Outside of work, Brianna likes to spend time with her husband, travel, and shop.


Amy Goff, Hygiene Coordinator
In 2017 Amy become part of our Seguin Smiles TEAM as our Hygiene Coordinator. She brings to the practice many years of experience in the dental field. Fourteen of those years were spent as a pediatric dental assistant. Her bubbly personality, dental knowledge, and great people skills make her a perfect fit for our office. In her free time, Amy enjoys spending time with her family, travel, and taking trips to the beach.