COLUMBUS, Ohio -- Ohio has added 71 physicians to the list of doctors able to recommend medical marijuana, bringing the total number to 293 certified since April.

Certified physicians can recommend medical marijuana to patients with one of 21 medical conditions. Patients will register for Ohio's medical marijuana program through physicians, but the registry is not yet operational.

All currently certified doctors can be found in a searchable database on cleveland.com. Click this link to find a certified doctor by name or zip code.

The database is updated monthly after the medical board approves physicians' applications for the certification. Participating physicians must hold an active, unrestricted MD or DO license from the Ohio State Medical Board and complete two hours of continuing education credits about cannabis and Ohio's qualifying medical conditions.

Physicians must sign off on several requirements before a patient can register:

The doctor has a bona fide relationship with the patient,

The patient has a qualifying condition,

The doctor has discussed the pros and cons of marijuana use and has reviewed the patient's history in the state's controlled substances database.

Ohio's medical marijuana program was supposed to be "fully operational" earlier this month, but licensing and business-related delays have pushed back the start date several months. Two of the state-licensed medical marijuana cultivators expect their first harvest in October, but it could take several months for the first dispensaries in the state to open.