The Social Security District Office (also known as the DO, field office, and FO) is simply the local social security office where a claimant files an application, or appeal, for benefits.

Though the DO does not process medical evaluations for disability claims (this is done by a disability examiner at disability determination services), at some point all claims are returned from DDS to the District Offices from which they originate.

In instances where cases are approved, it is the social security offices' responsibility (via the assigned Claims Rep) to ensure that monthly benefits and past due benefits (backpay) are expeditiously put on track on processing.

In the case of approved SSI claims, the Claims Rep will directly handle a claimant's benefit distribution.

In the case of social security claims (also known as DIB, title II, and RSDI), cases are sent to payment processing centers, often located out of state, for this purpose.