Nathan Gwilliam, Principal
Gwilliam Psychiatry PLLC is a psychiatry and psychotherapy practice led by Dr. Nathan Gwilliam, MD, located at 389 Whitney Avenue in New Haven, CT. The website describes an attachment-informed, psychodynamic approach to mental health care.
Filed March 9, 2026 · New Haven, CT
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Gwilliam Psychiatry is a healthcare business (LLC) registered on March 9, 2026 with the Connecticut Division of Corporations. The business is located in New Haven, Connecticut 06511. The filing lists Nathan Gwilliam as Principal.
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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.
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Gwilliam Psychiatry was registered as LLC on March 9, 2026 in Connecticut.
Gwilliam Psychiatry is based in New Haven, CT, 06511.
Gwilliam Psychiatry is classified as a healthcare business (psychiatry & psychotherapy).
No EIN was found on file for Gwilliam Psychiatry at the time of registration.
Based on the business category, these service providers typically target this type of business.
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