Every new Connecticut business filing, every dayMatthew Carriero Johnson, M.D.
Matthew Johnson, M.D., Principal
Matthew Carriero Johnson, M.D. is a psychiatrist specializing in child and adolescent psychiatry, based in Connecticut. The candidate site lists his practice locations in Hartford and New Haven, with hospital affiliations including Yale New Haven Hospital. The LLC filing shows his principal address in Darien, CT, and the registered agent is in Cheshire, CT.
Filed July 14, 2025 · Cheshire, CT · New Haven County
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Connecticut Secretary of the State (business.ct.gov) · Entity 3255971 · Retrieved July 26, 2026
About Matthew Carriero Johnson, M.D.
Matthew Carriero Johnson, M.D., PLLC filed in Connecticut on July 14, 2025, as an active psychiatry practice. The principal is Matthew Johnson, M.D., who also serves as the owner. The company has a verified modern website that matches the filing's name and address. The practice operates from a brick-and-mortar location in Cheshire. No annual report or EIN on file yet.
- Filed as a professional limited liability company (PLLC) for a licensed physician.
- Owner Matthew Johnson, M.D., is the sole principal, indicating a solo practice.
- Website identity confirmed, matching the filing's name and address.
- We estimate revenue between $100K and $1M and 1 to 5 employees.
- No annual report or EIN on file yet, suggesting a new or early-stage practice.
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 Cheshire in July 2025, and the only healthcare business registered there that month.
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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.
Officers / Authorized Persons
Frequently Asked Questions
When was Matthew Carriero Johnson, M.D. registered?
Matthew Carriero Johnson, M.D. was registered as LLC on July 14, 2025 in Connecticut.
Where is Matthew Carriero Johnson, M.D. located?
Matthew Carriero Johnson, M.D. is based in Cheshire, CT, 06410, in New Haven County.
What type of business is Matthew Carriero Johnson, M.D.?
Matthew Carriero Johnson, M.D. is classified as a healthcare business (psychiatry).
Does Matthew Carriero Johnson, M.D. have an EIN on file?
No EIN was found on file for Matthew Carriero Johnson, M.D. at the time of registration.
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