You can reach OLHSA in the following ways:
| Street Address: | Central Office 196 Cesar E. Chavez Avenue Pontiac, MI 48343-0598 (see map for directions) |
| Mailing Address: | P.O. Box 430598 Pontiac, MI 48343-0598 |
| Phone: | (248)209-2600 |
| Fax: | (248)209-2645 |
| Email: | info@olhsa.org |
| Street/Mailing Address: | South Office 345 E. Nine Mile Road Ferndale, MI 48220 (see map for directions) |
| Phone: | (248)542-5860 |
| Fax: | (248)542-5897 |
| Street/Mailing Address: | 2300 E. Grand River Avenue Suite 107 Howell, MI 48843 (see map for directions) |
| Phone: | (517)546-8500 |
| Email: | livingston@olhsa.org |