California professional corporation name requirements come from two places at once: the licensing board that governs your profession, and the Secretary of State’s general corporate naming rules. Your proposed name has to clear both before your Articles of Incorporation will be accepted. Getting it wrong means a rejected filing, wasted fees, and delay, so it pays to work through both layers before you commit.
Why Professional Corporations Face Two Sets of Rules
Ordinary business corporations only answer to the Secretary of State. Professional corporations answer to their licensing board as well. Corporations Code Section 13409 says a PC “may adopt any name permitted by a law expressly applicable to the profession in which the corporation is engaged or by a rule or regulation of the governmental agency regulating that profession.”1California Legislative Information. California Corporations Code CORP 13409
In practice, that means the Medical Board sets naming rules for physician PCs, the State Bar controls law corporation names, the Dental Board handles dental PCs, and so on. Your name has to satisfy those profession-specific rules and the Secretary of State’s general standards at the same time.
The Corporate Designator
Every PC name must include a word or abbreviation showing that the entity is a corporation. Which designators are allowed depends on your licensing board, and the lists are not identical.
The Secretary of State’s own regulations recognize “PC” and “Professional Corporation” as business-entity identifiers for corporations generally.2California Secretary of State. California Code of Regulations – Business Entity Names Your board’s list is the one that controls, though. A few examples:
- Law corporations: the State Bar requires a designation such as Professional Corporation, Prof. Corp., Corporation, Corp, Incorporated, or Inc.3State Bar of California. Rules of the State Bar Title 3 Division 2 Chapter 3 – Law Corporations
- Medical corporations: the Medical Board limits corporate-existence wording to the designators enumerated in its regulations.4Legal Information Institute. 16 CCR 1677 – Name Style-Corporation
- Optometric corporations: Professional Corporation, Prof. Corp., Corporation, Corp., Incorporated, or Inc. are allowed.5Legal Information Institute. California Code of Regulations Title 16 Section 1850.6 – Name of Corporation
- Veterinary corporations: the same set of designators applies as for optometric corporations.6Legal Information Institute. California Code of Regulations Title 16 1399.476 – Namestyle
Check the regulations of your specific board before you settle on a designator. Picking one that appears on another board’s list but not yours will get your filing rejected.
Surname and Service Requirements
Several boards require the name to include the surname of at least one current or former shareholder. The Medical Board is a clear example: a medical corporation’s name is restricted to “the name or surname of one or more of the present, prospective, or former physician and surgeon shareholders.”4Legal Information Institute. 16 CCR 1677 – Name Style-Corporation That ties the corporate identity to the licensed professionals behind it rather than to a generic brand.
Not every board mandates a surname, and some professions instead require the name to indicate the type of service offered. Across the board, the name cannot be misleading, and it cannot imply a specialization or affiliation that the corporation and its shareholders don’t actually have.
When a shareholder whose surname appears in the name leaves or retires, most professions allow the name to stay, because Section 13409 permits names referencing “former” shareholders.1California Legislative Information. California Corporations Code CORP 13409 Some boards may still require an amendment, so confirm with yours.
When You Want a Name That Doesn’t Follow These Rules
If you want to practice under a name that describes your specialty or service area instead of listing shareholder names, a fictitious name permit from your licensing board is usually the path.
For physicians, Business and Professions Code Section 2415 lets a sole proprietor, partnership, or professional corporation practice under a name that would otherwise violate the naming rules, provided they obtain and maintain a current fictitious name permit from the Medical Board’s Division of Licensing.7California Legislative Information. California Business and Professions Code BPC 2415 The Medical Board will issue the permit only if all shareholders hold valid licenses, the practice is wholly owned and controlled by the applicants, and the proposed name is not deceptive or misleading. The processing fee is $70, and review takes roughly four to six weeks.8Medical Board of California. Fictitious Name Permit Using a fictitious name before the permit is issued counts as unprofessional conduct and can trigger discipline.
Other boards have their own fictitious name procedures. If you practice outside medicine, contact your board directly to find out whether the option exists and what it costs.
Secretary of State Rules on Top
Whatever your board allows, your name still has to clear the Secretary of State’s general standards. The central one is distinguishability: the name must be distinguishable in the Secretary of State’s records from every other entity already on file, domestic or foreign. Small differences in punctuation, capitalization, or the corporate designator alone are not enough to make a name unique.2California Secretary of State. California Code of Regulations – Business Entity Names
Some words also carry extra approval requirements or outright bars:
- “Bank,” “Trust,” or “Trustee” require a Certificate of Approval from the Department of Financial Protection and Innovation before the Secretary of State will accept the filing.9Department of Financial Protection and Innovation. Corporate Names and Information
- “Olympic,” “Olympiad,” and similar terms cannot be used in a company name without permission from the United States Olympic and Paralympic Committee.10United States Olympic & Paralympic Committee. Commercial and Brand Usage Guidelines
- Names suggesting the corporation is a government agency, or has an official government tie, are not permitted.
Checking Availability and Reserving the Name
Before you file, search the Secretary of State’s online database at bizfileonline.sos.ca.gov to see whether the name is already taken. A clean result is a good sign but not a guarantee; the Secretary of State makes the final distinguishability call when you actually file.
If the name is available but you aren’t ready to incorporate, you can reserve it for 60 days for a $10 fee.11California Secretary of State. Business Entity Fee Schedule Reservations can be renewed, but not back-to-back; at least one day must pass between reservation periods, so you can’t hold a name indefinitely without actually filing.12California Secretary of State. Name Reservations
Get the Board’s Sign-Off Before You File
Once you have a name that looks good under both sets of rules, run it by your licensing board before you file your Articles of Incorporation. The Secretary of State may require proof by affidavit that the name complies with Section 13409 and the rules of your governing agency, and the statute lets the Secretary of State accept those affidavit statements as sufficient proof.1California Legislative Information. California Corporations Code CORP 13409
Law corporations must practice only under the name registered with the Secretary of State and approved by the State Bar, and the name has to comply with the Rules of Professional Conduct.3State Bar of California. Rules of the State Bar Title 3 Division 2 Chapter 3 – Law Corporations For medical corporations, the Medical Board reviews the Articles of Incorporation to confirm the entity is an active professional medical corporation before approving the name.8Medical Board of California. Fictitious Name Permit Other boards follow similar processes.
The sequence matters. If the board flags a problem after you’ve already filed with the Secretary of State, you’ll have to amend the articles and pay additional fees. Confirming with the board first avoids that.