The Family Dentists, S.C. in Union Grove, WI

At The Family Dentists, SC, our mission is to provide the highest quality of dental care that is tailored to each patient’s needs.  We are dedicated professionals and strive for excellence, and render a genuine, memorable, and relaxing experience that we would expect as patients ourselves.



  Meet the Doctors



John Ulloa, D.M.D.

Dr. Ulloa received his Doctorate of Dental Medicine from Washington University in St. Louis, Missouri. Following his dental school graduation, he served as Lieutenant in the U.S. Navy, both overseas and in the United States. He also served in the U.S. Navy Reserves, reaching the rank of Commander. He moved to Wisconsin and began his practice in 1992. He is well known for his honesty and his athletic mouth-guards that he custom fabricates right here in the office. He is an active member of the Union Grove Chamber of Commerce, the Wisconsin Dental Association (WDA), the American Dental Association (ADA), and the Burlington Dental Society. In his spare time,he loves to travel, exercise, and spend time with his family - he is also an avid sports fan.



Jeffrey Zeller, D.D.S.

  • Dental Implants  
  • IV Sedation
  • Conscious Sedation for dental anxiety
  • Wisdom Teeth Removal
  • Surgical Extractions
  • Pre-Prosthetic Surgery
  • Pre-Orthodontic Surgery


  • 2003 Doctor of Dental Surgery - University of Missouri, Kansas City
  • 2004 General Practice Residency - Naval Medical Center, Portsmouth, Virginia
  • 2007 Oral and Maxillofacial Surgery Training - (2 Year) - Univ. of MN. - Naval Medical Center, San Diego, CA
  • 2009 Advanced Clinical Program in Exodontia - Naval Medical Center, San Diego, CA
  • Wisconsin Permit IV Sedation 
  • Advanced Cardiac Life Support Certified



Meet the Clinical Team


Julie, Registered Dental Hygienist

Julie graduated from MATC in 1995 with an Associate's degree in Dental Hygiene. She has been working in the dental field for 26 years now with 18 years of her career with Dr. Ulloa. Julie strives to help the patients by educating them in the importance of overall health and body.; She truly enjoys the relationships that she has with the patients and their families over the years.  In Julie’s spare time, she enjoys boating, reading, and riding her bicycle.



     Jackie, Registered Dental Hygienist

Jackie graduated from MATC in 2011 with an Associates Degree in Dental Hygiene.  She has been working as a dental hygienist here at The Family Dentists for over 4 years now.  Jackie enjoys working with the patients and strives to provide the best care and support that she can for the total health of all patients, and loves hearing  about their hobbies, families, and life in general.  When Jackie is away from the office, she enjoys spending time  with her husband and two boys.

Sarah, Registered Dental Hygienist

Sarah graduated in 2000 from MATC with an Associates Degree in Dental Hygiene.  She has been in the dental field for over 20 years. Sarah strives to provide the best of care in the most gentle way possible and truly loves what she does.  In her spare time she enjoys cheering her two girls on in various sports.  She loves to read and enjoys the great outdoors.



Kristi, Registered Dental Hygienist

Kristie graduated from Prairie State College in 1997 with an Associates Degree in Dental Hygiene.  She has been working as a dental hygienist for the past 20 years, and joined Dr. Ulloa's team in 2015.  Kristie most enjoys easing the fear of apprehensive patients, as well providing assistance to achieve optimum dental health.  Kristie and her husband, Troy, enjoy traveling and spending time with their sons, Carson and Hudson.


Heather, Dental Assistant

Heather received her dental assistant training at the Apollo College in Tucson, Arizona in 2005.  She has been working as a dental assistant since 2005 and has been working with Dr. Ulloa for 3 years now.  She enjoys meeting the patients, the interaction, and helping to educate them in their dental care.  She strives to assist the patients in making their smile a happy and healthy one!  In her free time, Heather enjoys watching sports, going to concerts, and trying out new restaurants!


Amanda, Dental Assistant

 Amanda received her dental assistant training under the guidance of Dr. Ulloa here at The Family Dentists, SC. She has been working as a dental assistant for four (4) years now.  She enjoys playing her part in helping people   with their overall oral health and loves to see the smiles on the patients’ faces as care is given and the results are   achieved.  She also loves the relationships that have developed with the patients and their families.  In Amanda’s spare time, she enjoys reading, photography, social media, and bow hunting.


Amy, Dental Assistant                                                                                                                                   

Amy received her dental assistant training from Gateway Technical College where she graduated in 2005.  She is a long time resident of the area with 12 years of experence in the dental field. She looks forward to assisting each patient in obtaining the best results with their dental care.  In her spare time she enjoys fishing, kayaking, and spending time with her 2 children. 



Meet the Clerical Team


Mary, Patient Care Coordinator 

 Mary began her dental career path by graduating from the Dental Assistant program at Gateway Technical College in 1984.  She has been working as a dental assistant in the dental field for 31 years now, 16 years of this   time with Dr. Ulloa.  She is a people person and now is devoted to the ultimate care of the patients by welcoming   and assisting each patient with their scheduling needs. She is committed to the relationships she has developed   with the patients and their families throughout the years.  Mary also maintains the clinical staff scheduling as well!  In Mary’s free time, she loves spending time with her grandson, and shopping with her 3 girls.


 Jean, Business & Insurance Director

Jean began her career in dentistry when she completed the Dental Assistant Program at Gateway Technical College in 1985.  She continues to expand her knowledge by attending an abundance of continued education courses in dental office management, along with dental services each year.  She has worked in many roles within the dental field from a small specialty practice, a mid-size dental group practice, and 18 years in a large dental group as well!  With her experience, she uses her intimate knowledge of patient care and educaton to assist patients by reviewing their dental care needs, along with financial needs, to ensure an unparalleled experience.  In Jean's spare time, she is an avid volunteer, reader, and loves to express her creativity by crocheting, and crafts..


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Office Hours:

8:00 am - 6:00 pm Mondays

8:00 am - 5:00 pm Tuesday,  Wednesday, Thursday

Lunch hour 1:00-2:00 pm Monday - Thursday

Friday Hours By Appointment Only

Saturday Hours 8:00 am - 2:00 pm (One to two Saturdays a month)