Dr. Timothy G. Williamson DDS
Dentist
He is located at 970 South Silver Lake Street in Oconomowoc, WI 53066. Can help patients with the following: Cosmetic Dentistry, Dental Bridges, Dental Exam and Cleaning, Gum Disease / Gingivitis, Invisalign, Veneers. His National Provider Identifier (NPI) number is 1124076658. Appointment can be made via the phone number (262) 567-7400.
Conditions treated
Dr. Timothy G. Williamson, being an dentist, treats the following conditions. Please be advised that this list may not be complete. For the full list of conditions treated, consult directly with Dr. Timothy G. Williamson.
- Bleeding Gums
- Cosmetic Dentistry
- Dental Bridges
- Dental Crowns and Caps
- Dental Emergency
- Dental Exam and Cleaning
- Dental Implants
- Dental Malocclusion
- Dentin Hypersensitivity
- Dentures
- Gum Disease / Gingivitis
- Invisalign
- Laser
- Oral Cancer Examination
- Pericoronitis
- Teeth Grinding
- Teeth Whitening
- Veneers
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. Timothy G. Williamson as in-network for the following 2026 plans.
Dental plans
Renaissance Dental
Network data as of Sep 16, 2026, as reported by the insurer.
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Wisconsin Preferred Plan | PPO · Low | Preferred | Accepting new patients |
| Wisconsin Preferred Plan (Pediatric Only) | PPO · Low | Preferred | Accepting new patients |
| Wisconsin Wellness Essentials | PPO · Low | Preferred | Accepting new patients |
This covers ACA Marketplace plans only, as reported by each insurer. It does not include employer, Medicare Advantage, or state-run exchange plans, and a plan missing from this list does not mean Dr. Timothy G. Williamson is out of network. Insurer directories can be out of date, so always confirm with the insurer and the office before your visit.
Payments received
Drug payment
| Gilead Sciences | $119 |
| OraPharma a division of Bausch Health US LLC | $54 |
| Dentsply | $18 |
Other
| Food and Beverage | $209 |
Looking for more Dentists?
Out of the 25 dentists in this region, here are 10 randomly selected ones for you to explore.
- Gender: Male
- Address: Suite 210 W359N5002 Brown Street Oconomowoc, 53066, WI
- Gender: Male
- Address: 1020 Oconomowoc Parkway Oconomowoc, 53066, WI
- Gender: Female
- Address: Suite F 175 East Wisconsin Avenue Oconomowoc, 53066, WI
- Gender: Male
- Address: 820 Summit Avenue Oconomowoc, 53066, WI
- Gender: Male
- Address: Suite 101 1300 North Summit Avenue Oconomowoc, 53066, WI
- Gender: Male
- Address: 1259 Corporate Center Drive Oconomowoc, 53066, WI
- Gender: Male
- Address: 714 Summit Avenue Oconomowoc, 53066, WI
- Gender: Male
- Address: Suite 215 888 Thackeray Trail Oconomowoc, 53066, WI
- Gender: Female
- Address: W381N8165 Rolling River Circle Oconomowoc, 53066, WI
- Gender: Male
- Address: 820 Summit Avenue Oconomowoc, 53066, WI
Questions & Answers
Does Dr. Timothy G. Williamson accept patients with Renaissance Dental?
Yes, Dr. Timothy G. Williamson is listed in-network for Renaissance Dental through the ACA Marketplace (Obamacare/HealthCare.gov). See the Marketplace plans section for details.
What conditions does Dr. Timothy G. Williamson treat?
Dr. Timothy G. Williamson provides treatment for Cosmetic Dentistry, Dental Bridges, Dental Exam and Cleaning, Gum Disease / Gingivitis, Invisalign, Veneers. For the full list see this list.
Where can you meet with Dr. Timothy G. Williamson?
Dr. Timothy G. Williamson's office is located at 970 South Silver Lake Street in Oconomowoc, WI 53066.