Directory of Offices
| Office | Contact Person/ Position | Contact Number | Email address |
| Administrator’s Office/BAC Office | Ms. JOYCELYN M. UY- NADRES Municipal Administrator | 0977-473-9637 | isabela.lgugamu@gmail.com |
| General Services Office | Mr. JOAQUIN A. ACCAD, JR. Municipal GSO/ MENRO Designate | 0917-805-2431 | joaquinaccad13@gmail.com |
| Budget Office | Mr. MELVIN F. PABRO, LPT Budget Officer II | 0917-834-6873 | melvinpabs@gmail.com |
| MSWD Office | Ms. DAIZE RILLA B. TABIN, RSW MSWD Officer | 0995-654-2165 | mswdogamu_isabela@yahoo.com |
| Civil Registrar Office | Ms. BERNADETTE G. CANTOR Municipal Civil Registrar | 0926-300-9386 | bernadette.cantor@yahoo.com |
| Accounting Office | Mr. TEODORO R. BALAO, JR. Administrative Officer IV | 0977-810-6181 | gamu_isabela@yahoo.com |
| Assessor’s Office | Mr. ARTEMIO V. VILLANUEVA, JR. Assessment Clerk III | 0915-1518-380 | assessorsofficegamu@gmail.com |
| Treasury Office | Mr. PATRICK L. NICOLAS, CPA Acting Municipal Treasurer | 0977-707-3776 | mto_gamu@yahoo.com |
| HRM Office/ Tourism Office | Ms. GLORIZA C. PREZA Municipal HRMO | 0977-821-9448 | glorizapreza@yahoo.com |
| Agriculture Office | Mr. EXEQUEIL C. TABIN Municipal Agriculturist | 0917-655-8432 | tabinexequiel@gmail.com |
| Rural Health Unit | Ms. MA. ROWENA E. DOMINGO / Ms. ELMA S. CLEMENTE Nurse II | 0997-536-3101 0935-938-7208 | rhu.gamuisabela@yahoo.com |
| Engineering Office | Engr. AETWELVE T. MARTINEZ Engineer II | 0917-888-5917 | gamuengineering@gmail.com |
| Planning and Development Office | Arch. RHODEL P. FELIPE, EnP MPDC | 0951-540-6180 | mpdcgamu@gmail.com |
| Liga ng Mga Barangay | Ms. ELSIE A. CAUILAN LnB Liaison Officer | 0936-702-9275 | loidadiego24@gmail.com |
| Office of the Senior Citizens Affair | Mr. JOEL S. OLAIS OSCA President | 0917-139-1508 | |
| LDRRM Office | Mr. REDENTOR A. CARO LDRRM Officer II | 0927-128-7232 | ldrrm.gamu@yahoo.com |
| Public Employment Services Office | Mr. ROSITO R. RAMIREZ PESO Manager Designate | 0917-630-8052 | sitsramz@gmail.comsitong_r@yahoo.com |
| Business Permit and Licensing Office | Ms. ROWENA NACION BPLO Designate | 0926-885-0567 | BPLOGAMU3301@gmail.com |
| Local Economic Investment and Promotions Office | Ms. JOYCELYN M. UY- NADRES Municipal Administrator | 0977-473-9637 | isabela.lgugamu@gmail.com |