JM
John O'Mara Mersereau
John O'Mara Mersereau is a lawyer in Carlsbad, CA who works for Mersereau Law P.C.. Licensed in Texas since 2022. Graduated from Unknown in 2008.
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Law school
Bar admission
Office
Disciplinary
JM
John O'Mara Mersereau
Mersereau Law P.C.Carlsbad, CA·3 years licensed
Claim profileContact attorney
John O'Mara Mersereau is a lawyer in Carlsbad, CA who works for Mersereau Law P.C.. Licensed in Texas since 2022. Graduated from Unknown in 2008.
Law school
Unknown
Class of 2008
Bar admission
2022
State Bar of TX · No. 24129994
Office
1849 Palisades Dr
Carlsbad, CA 92008
Disciplinary
None on record
Clean since admission
Career history
2 observed firms
Based on State Bar of Texas snapshots — each row is a firm the attorney was registered with at one of our quarterly pulls.
- Mersereau Law FirmAS OF MAY 2023Private Law Practice · Carlsbad, CA
- Mersereau Law P.C.APR 2026 — PRESENTPrivate Law Practice · Carlsbad, CA
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Last refreshed Jun 2026