Closing a dental practice in Illinois is really a dozen smaller projects with different deadlines — records, regulators, patients, staff, the lease, and a building full of equipment. Dentists who start a year out describe the process as busy but manageable. Dentists who start three months out describe it very differently. Here's the timeline we see work, over and over, from the team that handles the physical side for a living.
12–9 months out: make the big decisions
- Decide the exit path. Selling the practice, merging, or simply closing? Each has a different timeline. (If a sale falls through later, the close-down checklist below still applies — just compressed.)
- Assemble your team. A healthcare attorney, your CPA, and — if selling — a practice broker. Early conversations here are cheap; late ones are expensive.
- Read your lease. Find the end date, the notice requirements, and the surrender-condition language. That one paragraph about "original condition" determines a lot of what happens in your final month.
- Call your malpractice carrier. Ask about tail coverage ("extended reporting") so there are no surprises on cost.
9–6 months out: build your records plan
- Records retention. Illinois dentists must retain patient records for years after the last treatment date — your attorney will confirm the current requirement for your situation, including the longer clocks for minors.
- Choose a records custodian. Patients will request copies for years. Decide who will hold the records, how requests get fulfilled, and how patients will be told.
- Digital systems. Confirm how you'll export and preserve data from your practice-management and imaging software before the subscriptions end.
6–3 months out: notifications
- Patients. Written notice with the closing date, how to get records, and where to seek care. Many dentists also post notice in the office and on the practice website.
- Staff. Give your team as much runway as you can — and consider stay bonuses through the final day. A practice closing with a full team is a far smoother practice closing.
- Payers and vendors. Insurance networks, labs, suppliers, marketing contracts, equipment service plans — start the cancellation clocks.
- DEA & controlled substances. Surrender or address your DEA registration and dispose of controlled substances through compliant channels. This is regulated and documented — don't leave it for the last week.
The final 90 days: deal with the physical office
This is the part most checklists gloss over — and the part that produces the most panic. Your office is full of plumbed, wired, bolted-down equipment, and your lease probably requires the space back in broom-clean condition.
- Get your equipment valued early. Photos of each operatory, the sterilization area, and the mechanical room are enough for a real offer. Selling on a comfortable timeline always beats a fire sale. (Wondering what it's worth? We wrote the honest answer here.)
- Schedule the liquidation. A full office liquidation — one offer for everything, removal included — usually books a few weeks out. Lock the date so it lands after your final patient day and before your lease surrender.
- Confirm tail coverage, utilities, and insurance dates so the office stays covered until the keys go back to the landlord.
The final month: last patient day to lease surrender
Here's how the last weeks run when the physical side is handled by one team: you see your final patients. The crew arrives after your last day, purchases and disconnects the equipment, clears everything else, and leaves the space broom-clean for the landlord's final walkthrough. You collect payment for the equipment instead of paying a hauler.
The part nobody warns you about
The paperwork is tedious, but watching your operatories come apart is the emotional part. Most of our clients are dentists retiring after 25 or 30 years, and we treat the week accordingly. If it helps to talk through your specific timeline — even a year out — send us a form or call (224) 500-8130. The conversation is free, and you'll close knowing the hardest week is already planned.