DirectorySan AntonioDana Marie GannonLast refreshed Jun 2026
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BAR · 7623800

Dana Marie Gannon

Thornton, Biechlin, Segrato, Reynolds & Guerra, LC·San Antonio, TX·36 years licensed

Dana Marie Gannon is a lawyer in San Antonio, TX who works for Thornton, Biechlin, Segrato, Reynolds & Guerra, LC. Practice areas include Insurance, Workers' Compensation. Board certifications include Workers' Compensation Law. Licensed in Texas since 1989. Graduated from Drake University in 1989.

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● 1 PROFILE VIEWS (30D)
Law school
Class of 1989
Bar admission
1989
State Bar of TX
Office
100 NE Loop 410 Ste 500
San Antonio, TX
Disciplinary
None on record
Clean since admission
DG
San Antonio, TX·36 years licensed
No reviews yet● 1 · 30D

Dana Marie Gannon is a lawyer in San Antonio, TX who works for Thornton, Biechlin, Segrato, Reynolds & Guerra, LC. Practice areas include Insurance, Workers' Compensation. Board certifications include Workers' Compensation Law. Licensed in Texas since 1989. Graduated from Drake University in 1989.

Law school
Drake University
Class of 1989
Bar admission
1989
State Bar of TX
Office
100 NE Loop 410 Ste 500
San Antonio, TX
Disciplinary
None on record
Clean since admission
Career history

3 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.

  1. Thornton, Biechlin, Segrato, Reynolds &AS OF MAY 2023
    Private Law Practice · W Lake Hills, TX
  2. Thornton, Biechlin, Segrato, Reynolds &AS OF APR 2026
    Private Law Practice · San Antonio, TX
  3. Thornton, Biechlin, Segrato, Reynolds & Guerra, LCAS OF JUN 2026
    Private Law Practice · San Antonio, TX
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