| Mission Primary Care Clinic | 102 S Bryan Rd a - Mission Telephone: 956-600-7799 |
| Mission Veterinary Hospital | 2012 E Business Highway 83 - Mission Telephone: (956) 585-1656 |
| Mobile Imaging X-Ray | 17745 W Expy 83, - Harlingen Telephone: 956-440-9729 |
| Modern Medical Equipment | 126 E Park Ave, - Pharr Telephone: 956-283-0048 |
| Mom's Pharmacy | 2990 Texas Blvd N # B - Weslaco Telephone: 956-447-9933 |
| Monte Cristo Family Day & Night Clinic | 3002 N Closner Blvd - Edinburg Telephone: 956-383-8300 |
| Monte Cristo Family Day & Night Clinic | 3002 N Closner Blvd - Edinburg Telephone: 956-383-8300 |
| Moody Clinic | 1901 E 22nd St - Brownsville Telephone: 956-542-8504 |
| Mora Dental | 210 S Bryan Rd # 4 - Mission Telephone: 956-585-7677 |
| Morningside Pharmacy | 100 Morningside Rd. - Brownsville Telephone: (956) 541-9884 |