Every new California business filing, every dayWilliam Yong MD
The LLC 'William Yong MD Inc.' corresponds to Dr. William Yong, a physician associated with UCI Health in Orange, CA. The UCI Health page confirms his affiliation as a specialist in neuropathology.
Filed January 13, 2026 · Orange, CA · Orange County
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California Secretary of State (bizfile Online) · Entity B20260023718 · Retrieved May 14, 2026
About William Yong MD
William Yong MD Inc. filed in California on January 13, 2026, as a physician medical practice based in Orange. The domain was registered 11,288 days before filing, on February 17, 1995, through eNom, indicating a long-standing web presence. The dated website suggests an established practice. The company filed through Northwest Registered Agent, a formation service, and shares its registered agent with 6,165 other entities. No annual report or EIN on file yet. We estimate revenue between $100K and $1M and 1 to 5 employees, with a brick-and-mortar footprint.
- Domain registered 11,288 days before filing, indicating a long-established web presence.
- Filed through Northwest Registered Agent, a formation service.
- Dated website suggests an existing practice rather than a new startup.
- Shares registered agent with 6,165 other entities.
- We estimate revenue of $100K-$1M and 1-5 employees, with a brick-and-mortar location.
- No annual report or EIN on file yet.
Compiled from the state record, the company's public web presence, and our own research; revenue, employee, and footprint figures are estimates, not verified financials. Updated August 23, 2026.
One of 21 new businesses registered in Orange in January 2026, one of 3 medical practice businesses.
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Filing Details
Verified Business Profile
Contact Information
Verified Website Profile
We matched this business to its website and pulled the domain's registration (WHOIS) record. Domain age is one of the strongest signals that a filing is a truly new business and not a re-filing or paperwork change.
Frequently Asked Questions
When was William Yong MD registered?
William Yong MD was registered as Corp on January 13, 2026 in California.
Where is William Yong MD located?
William Yong MD is based in Orange, CA, 92868, in Orange County.
What type of business is William Yong MD?
William Yong MD is classified as a medical practice business (physician).
Does William Yong MD have an EIN on file?
No EIN was found on file for William Yong MD at the time of registration.
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