Our Team

Dr. David Maixner | Endodontist

Dr. Maixner attended the University of Nebraska in Lincoln and graduated with a Bachelor of Science degree in Biology in 1989. He graduated from the University of Iowa College of Dentistry in 1993 and practiced general family dentistry in Davenport, Iowa, for the next two years.


His endodontic residency training (1995-97) was completed at the University of Nebraska Medical Center College of Dentistry in Lincoln, Nebraska. In 1997, he founded the practice of Midwest Endodontics. In addition, Dr. Maixner is a diplomate of the American Board of Endodontics. While not required to practice, this distinction is the highest level of achievement in endodontics. Less than a quarter of all practicing endodontists have attained diplomate status. He and his family reside in Omaha.

Professional Memberships

  • Diplomate, American Board of Endodontics
  • American Dental Association
  • American Association of Endodontists
  • Nebraska Dental Association
  • Omaha District Dental Society
  • Volunteer faculty at UNMC College of Dentistry
  • Publications and Presentations

  • Publications and Presentations

    I. ABSTRACTS


    Maixner, D., D’Souza, J., Walton, R., Baumgardner, K. Cross sectional configuration of endodontic files compared with manufacturers’ design. Journal of Dental Research; Special Issue 1991. Abstract # 180; 70: 288.Maixner, D., Green, T.L., Walton, R.E., Leider, A. Histologic examination of condensing osteitis. Journal of Endodontics 1992. Abstract # 37; 18: 196.Maixner, D., Taylor, J.K., Johnson, W.T., Rivera, E. A comparison of apical leakage in lateral condensation and ketac-endo obturations. Journal of Dental Research; Special Issue 1993. Abstract # 174; 72: 125.


    II. PUBLICATIONS


    D’Souza, J., Maixner, D., Walton, R., Baumgartner, K. Cross sectional configuration of endodontic files compared with manufacturers’ design. Journal of Endodontics; December 1995, Volume 21, Number 11.


    Gound, T.G., Maixner, D.A. Nonsurgical Management of a dilacerated maxillary incisor with Type III dens invaginatus. Journal of Endodontics; June 2004, Volume 30, Issue 6.


    Green, T.L., Walton, R.E., Clark, J.M., Maixner, D.A., Histologic Examination of Condensing Osteitis in Cadaver Specimens. Journal of Endodontics, August 2013, Volume 39, 977-9.


    III. PRESENTATIONS


    “A Comparison of Apical Leakage in Lateral Condensation and Ketac-Endo Obturations.” 1993 Iowa Association of Dental Research Conference, 1993 Midwestern Dental student Research Conference, 1993 IADR/AADR Conference.


    “Histologic Examination of Condensing Osteitis.” 1992 Iowa Association of Dental Research Conference, 1992 Midwestern Dental Student Research conference, 1992 American Association of Endodontists Research Meeting.


    “Internal Bleaching of Endodontically Treated Teeth.” 1992 Iowa Table Clinic Competition.


    “Cross Sectional Configuration of Endodontic Files Compared with Manufacturers’ Design.” 1991 Iowa Association of Dental Research Conference, 1991 Iowa Table Clinic Competition, 1991 Midwestern Dental Student Research Conference, 1991 JADR/AADR Conference.

Dr. Corey Karimjee | Endodontist

Dr. Karimjee attended the University of Nebraska in Lincoln and graduated with a Bachelor of Science degree in Biology in 1996. He graduated from the University Of Nebraska Medical Center College Of Dentistry in 2002. He then completed his endodontic residency training and Master of Science degree in 2004.


His next two years were spent practicing endodontics in Eau Claire, Wisconsin. In 2006, he moved to Omaha to become a partner in Midwest Endodontics L.L.C. In addition, Dr. Karimjee is a diplomate of the American Board of Endodontics. While not required to practice, this distinction is the highest level of achievement in endodontics. Less than a quarter of all practicing endodontists have attained diplomate status. He and his family reside in Omaha.

Professional Memberships

  • Diplomate, American Board of Endodontics
  • American Dental Association
  • American Association of Endodontists
  • Nebraska Dental Association
  • Omaha District Dental Society
  • Omicron Kappa Upsilon Dental Honor Society
  • Fellow, Pierre Fauchard Academy
  • Volunteer faculty at UNMC College of Dentistry

Polly - Patient Care Coordinator

Polly started her dental career at Midwest Endodontics in 1999 as a Dental Assistant for 12 years. She rejoined our team in 2022. She can help get your appointment scheduled and answer any questions you may have.


In her spare time she loves shopping, going out to eat and watching her daughter play softball. In the summer you can find her at the pool or lake.

Abby - Office Manager

Owner of a curly tailed Shiba Inu, a contagious smile and a positive attitude. Abby will be there to help you get your treatment scheduled and answer any payment questions you may have.   

 

She is originally from Ashland OH and joined our team in 2021. One of her favorite things to do is going hiking with her fiancé and pup. 

Michelle - Dental Assistant

Michelle started at Midwest Endodontics in 2022. She loves coming to work and making sure each patient has a pleasant experience.



Michelle spends her free time with her husband, two young daughters and two dogs. She enjoys teaching her dogs new tricks and watching her girls’ personalities expand. When she’s not hanging out with her girls, she enjoys playing video games.

Courtney - Dental Assistant

Courtney is a dedicated mom of two young children and a passionate dental assistant , having started her career in the field in 2018. She joined our family here at Midwest Endodontics 2024.


Originally from Texas, she brings a warm, family-first approach to both her professional and personal life. Outside of work, she loves spending quality time with her family, whether it’s enjoying the outdoors, playing games, or simply relaxing while binge watching Greys Anatomy.

Nancy - Dental Assistant

She joined our team in 2019. She enjoys getting to know each patient and helping them through their procedures.



She loves spending time with her grandson and is looking forward to her second grandbaby coming soon. In her free time, she enjoys spending time with her family and friends. In the summer you will find her on the lake sunning or boating.

Alisa - Dental Assistant

Alisa started with Midwest Endodontics in 2019. She enjoys coming to work and building a positive and friendly relationship with each patient.



Alisa enjoys traveling, photography and landscaping. In the summer months you may find her at the golf course, watching sports or sitting on the patio with family and friends.