519 672 2121
Close mobile menu

Physicians and dentists in Ontario are permitted to incorporate a professional corporation through which they may practice their profession. There are significant benefits associated with incorporating, and most professionals choose to take advantage of these benefits by establishing a medicine professional corporation (MPC) or a dentistry professional corporation (DPC).

MPCs and DPCs are governed by the Regulated Health Professions Act (RHPA) as well as the College of Physicians and Surgeons (CPSO), in the case of MPCs, and the Royal College of Dental Surgeons of Ontario (RCDSO), in the case of DPCs. Incorporating an MPC or a DPC is a complex process that requires compliance with legislation as well as the regulations set by the CPSO or the RCDSO. We routinely assist physicians and dentists to establish a professional corporation and we encourage that they engage a lawyer and accountant to assist with the determination and establishment of the proper corporate structure in order to achieve long term goals.


Medicine professional corporations and dentistry professional corporations must be incorporated as a provincial corporation under the Business Corporations Act (Ontario) (OBCA). As such, it is necessary to first file articles of incorporation prior to applying for a Certificate of Authorization from the CPSO or the RCDSO. There are certain provisions that must be included in the articles, including a provision indicating that the corporation may not carry on a business other than the practice of the profession, and activities related to or ancillary to the practice of that profession. The corporation is permitted to temporarily invest surplus funds of the corporation, but there are restrictions on the types of investments the corporation is permitted to pursue, to ensure the corporation does not carry on a business that is not the profession.

The type and number of shares being issued is determined by the physician’s or dentist’s accountant and lawyer. It is important to determine the most appropriate corporate structure, considering the unique circumstances of the physician or dentist, in order to achieve long term goals. There are certain requirements and restrictions attached to the share capital of the professional corporation. The rules surrounding the shares of an MPC and a DPC require the voting shares of the professional corporation to be held by a physician or dentist who is a member of the college governing their profession. Non-voting shares are permitted to be held by certain family members of the physician or dentist (the spouse, children and parents of the member physician or dentist). The definition of “spouse” also extends to include a common-law spouse of the physician or dentist. If the physician or dentist has minor children, the shares allotted to the minor children must be held in trust for each minor child, usually by the physician or dentist, until such child is eighteen years old. Once the child turns eighteen, the shares are transferred to the child directly.

Certificate of Authorization

Once the professional corporation has been incorporated as an Ontario corporation, it is necessary to obtain a Certificate of Authorization from the CPSO or the RCDSO in order to be permitted to practice the profession through the professional corporation. In order to obtain a Certificate of Authorization from either college, the physician or dentist must complete the application from their respective college’s website, as well as pay the corresponding application fee. In addition to the completed application form, the college governing the profession requires specific documentation to be submitted along with the application including a copy of the articles of incorporation and a Corporation Profile Report. If the college determines that the applicant is eligible for a Certificate of Authorization, it will issue the certificate. Once the certificate is issued, the certificate must be renewed annually. For dentists, the certificate expires on August 31 of each year, regardless of the date the certificate was issued, and must be renewed prior to that date. For physicians, the certificate expires one year from the date of issue and the renewal process must be completed prior to the anniversary date that the certificate was issued.

It is possible for the college to revoke a Certificate of Authorization under various circumstances. For instance, if the professional corporation ceases to practice medicine or dentistry, as the case may be, or if it carries on business that is not the practice of the profession or activities related to or ancillary to the practice of the profession, the college may revoke the certificate and the physician or dentist would no longer be permitted to practice through the professional corporation.

Directors and Officers

The OBCA is very clear in imposing specific requirements on the professional corporation, including restrictions with respect to persons permitted to act as the directors and officers of the professional corporation. The directors and officers must be shareholders of the corporation who are members of the college governing the profession practiced through the professional corporation.

Naming the Professional Corporation

Under the RHPA there are certain requirements and restrictions with which MPCs and DPCs must comply. One of these restrictions pertains to the permitted name of the professional corporation. Pursuant to the RHPA, the name of the MPC or DPC must include the physician’s or dentist’s surname. The name may also contain the physician’s or dentist’s given names or initials, as well as “Dr.”. If the MPC or DPC is to have more than one physician or dentist member it is only necessary to include one of the physician’s or dentist’s names in the name of the professional corporation. The name of the professional corporation must also contain the words “Medicine Professional Corporation” in the case of an MPC and “Dentistry Professional Corporation” in the case of a DPC.


It is a common misconception that all liability of the professional corporation (including professional liability of the physician or dentist) is limited by virtue of practicing through the professional corporation. However, practicing through a professional corporation does not protect the shareholders from professional liability. The actions of the professional corporation are deemed to be the actions of the shareholders . The dentist or physician who chooses to practice through a professional corporation continues to remain liable for any professional liability claims made against the corporation.

Please feel free to reach out to our Professionals Practice Group for advice and direction regarding the incorporation of a professional corporation.

News & Views


The more you understand, the easier it is to manage well.

View Blog

The dangers of drip pricing: Shining a spotlight on hidden fees

When a consumer chooses to make a purchase based on a price displayed, they should be able t…

Suboxone tooth decay lawsuits on the rise in North America

Suboxone is a medication containing buprenorphine, which is a first-line treatment for opioi…