Sturgeon Bay Dentists

Gina R. Grenfell, D.D.S. – Co-Owner

Dr. Gina was born and raised near Wausau, Wisconsin.  In 2008, she received her Bachelor of Science Degree in Biology from the University of Wisconsin- Madison.  Dr. Grenfell received her Dental Degree from Marquette University School of Dentistry in 2012.  While at Marquette, she was an active member of the American Student Dental Association and was the Class of 2012 Representative her final year.

She practiced for two years in Kenosha, Wisconsin before relocating to Sturgeon Bay in 2014.   She is a member of the American Dental Association, Wisconsin Dental Association, Brown-Door-Kewaunee County Dental Society, and Academy of General Dentistry.  Dr. Grenfell is passionate about helping patients achieve optimal oral health and a healthy, happy smile.  She has completed training through the Misch Implant Institute, is certified in Oral Conscious Sedation, and aspires to continue to grow and advance her training. 

Dr. Grenfell and her husband Derek are big Wisconsin sport fans!  They like to stay active themselves and try to enjoy all that Door County has to offer with their three beautiful girls, Charlotte, Louisa and Adelaide.  When she is not practicing dentistry, Dr. Grenfell enjoys the outdoors, CrossFit, cooking and baking, and spending time with her daughters and husband.

Fun Facts About Dr. Grenfell:

What is your favorite food?
I like a wide variety of different foods and always open to trying new ones.  However, I love sushi!

What do you like to do with your spare time?
When I have free time, it is usually spent with my daughters and husband.   It is so fun to see life through my girls’ perspectives!  I also love CrossFit and the community around it.  

What is your favorite TV show?
I don’t watch a lot of TV, but my husband and I have gotten into Netflix series, and of course Packer and Badger football games.

If you could go anywhere in the world where would you go and why? Or, of the places you’ve traveled what was your favorite and why?
There are numerous places I would love to travel in the future.  I would love to travel to Europe, especially Italy or Greece.

If you could meet anyone from past or present who would it be and why?
There are so many fascinating people, but it would be interesting to meet Leonardo da Vinci.  He was an artist and scientist, among other things, and lived in such an interesting time period in history.

What is it about dentistry that you love?
I love working with patients to improve his or her confidence, smile, and overall health.


Paul FeitPaul M. Feit, D.D.S., FAGD Co-Owner
Fellow of the Academy of General Dentistry

Dr. Feit was born and raised near Wausau, Wisconsin.  In 1998, he received his Bachelor of Science Degree in Molecular Biology from the University of Wyoming.  Dr. Feit received his Dental Degree from Creighton University Medical Center’s School of Dentistry in 2004.  While at Creighton, he was President of the Dental Student Union, awarded membership in the Alpha Sigma Nu Jesuit Honor Society, awarded Membership in the Pierre Fauchard Academy for outstanding academic achievements in dentistry, and awarded membership in the Omicron Kappa Upsilon Dental Honor Society.

Dr. Feit practiced dentistry in Green Bay before he relocated to Sturgeon Bay.  In March of 2008, Dr. Feit assumed his dental practice, Dentistry by Design in Sturgeon Bay, when Robert J. Schrank, DDS, retired.  Additionally, Dr. Feit added clinic locations in Sister Bay in 2012, Algoma in 2015 and Gulf Cove Dental in Port Charlotte, FL, in 2019.  Dr. Feit emphasizes comprehensive and advanced dental care. To be able to provide this level of care, Dr. Feit has taken hundreds of hours of continuing education since graduating dental school.  He has studied TMJ/bite problems at the Pankey Institute and the American Academy of Facial Esthetics, dental implants at the Misch International Implant Institute, dental sleep medicine with the American Academy of Dental Sleep Medicine, oral conscious sedation with the Dental Organization for Conscious Sedation, as well as countless other topics. In June of 2013, he received Fellowship status with the Academy of General Dentistry (AGD). The AGD Fellowship Award is presented to dentists who seek to provide the highest quality of dental care by remaining current in their profession.

Dr. Feit is a firm believer in giving back through dentistry.  While living in Green Bay, Dr. Feit participated as a member on the Board of Directors, as well as being a practitioner, for the Brown County Oral Health Partnership.  The Oral Health Partnership delivers free dental care to underserved children using mobile dental equipment in school settings.  Dr. Feit was also a member of the NEWAHEC Board of Directors.  This board was responsible for distributing grant money to fund programs encouraging minorities to choose careers in healthcare.  Dr. Feit has been active in advocating for patient care at the state level and was the recipient of the WDA Pyramid of Pride Award for Political Action following his run for the State Assembly in 2012.  While in Sturgeon Bay, Dr. Feit provided dental care at Ministry Door County Medical Center’s ER and OR Departments on an as needed basis. Internationally, Dr. Feit has led several dental mission trips to both Haiti and Honduras.  Currently, Dr. Feit is on the Wisconsin Dental Association’s Practice Transitions Committee.  Dr. Feit is also a member of the American Dental Association,  Wisconsin Dental Association, Florida Dental Association, Academy of General Dentistry, American Academy of Dental Sleep Medicine, American Academy of Facial Esthetics, Dental Organization for Conscious Sedation and the Pierre Fauchard Academy.

Dr. Feit has been married to his wife Jillian for over 20 years.  They enjoy traveling with their two children Henry and Claire.  Dr. Feit is an avid outdoorsman and enjoys fishing (although he is admittedly not very good at it), hunting, hiking and flying his Cessna.

Fun Facts About Dr. Feit:

What is your favorite food?
Anything made with fresh, flavorful ingredients, or a really fresh chocolate frosted cake donut, with black coffee, depends on the day.

What do you like to do with your spare time?
I love to travel and enjoy the adventure of seeing new places.

What is your favorite TV show?
Impractical Jokers.

If you could go anywhere in the world where would you go and why? Or, of the places you’ve traveled what was your favorite and why?
My favorite place to travel is Kodiak Island in Alaska.  Because who doesn’t like flying in float planes, sleeping on a boat in 80 mile an hour winds and dodging Brown Bears while hiking up and down impossibly steep mountains?

If you could meet anyone from past or present who would it be and why?
Albert Einstein.  I want to ask him who his hair stylist was.

What is it about dentistry that you love?
I love to help people and I love the challenges that dentistry presents.  It is a tough environment to work in and highly technical, but the patients are what make it all worthwhile.

Patti A. Sigl, D.D.S.

Dr. Patti was born and raised in Seymour, WI and spent most of her summers in Door County with her family. She attended St. Norbert College. In 2009, Dr. Sigl graduated with honors from Marquette University with her Dental Degree. While in college and dental school, she was actively involved with the group Global Medical Brigades delivering dental treatment in under-served villages of Honduras. Following dental school, she completed a General Practice Residency program at the Community Health Center of Burlington, Vermont through the University of Vermont and Fletcher Allen Hospital. After residency, she returned to Wisconsin to practice general family dentistry in Sturgeon Bay.

She has worked at the Door County Medical Center Dental Clinic since 2010 and believes strongly in giving back through dentistry. From 2011-2015 she also worked with the under-served children in the Green Bay area as a dentist for Oral Health Partnership. She maintains hospital privileges at Door County Medical Center Dental Clinic. Dr. Sigl holds a position on the Wisconsin Oral Health Coalition Steering Committee, which is a group that helps advocate for patient access to dental care and improving Wisconsin’s overall oral health.

Dr. Sigl has been married to her Husband, Craig, for almost 10 years and they have two sons, Jonathan and Eddie. They enjoy anything outdoors, (even in the winter), traveling, boating and all things Door County. They have also become passionate Crossfitters and enjoy living a healthy lifestyle.

Fun Facts About Dr. Sigl:

What is your favorite food?
Pizza, as much as I don’t want to admit that! I’m a sucker for Wild Tomato.

What do you like to do with your spare time?
Hmmm…spare time…what is that? I love being with my family outside. We love hiking, biking, camping, boating and crossfit. We are very active and never bored. 

What is your favorite TV show?
I can get sucked into just about any Netflix series but at the moment I am loving Ozark. 

If you could go anywhere in the world where would you go and why? Or, of the places you’ve traveled what was your favorite and why?
I love traveling and experiencing new things. One of my all time favorite trips was our family reunion in Scotland. It was a once in a life time trip staying in a castle with 90 members of our family. That one will be hard for me to beat.

If you could meet anyone from past or present who would it be and why?
To be totally honest, it would be between The Rock (Dwayne Johnson) and Michael Strahan because they just seem like fun, successful people with positive attitudes who I’d like to be friends with.

What is it about dentistry that you love?
My favorite thing is when a nervous patient has a great experience. I love seeing them more confident and telling me it was much easier than they expected. 

Call to schedule your appointment today to see how our caring professionals
can meet your dental care needs. 

Sturgeon Bay: (920) 743-6976    Sister Bay: (920) 854-5200    Algoma: (920) 487-2733