Where do I submit my completed application for SSDI if I am applying by mail from California?

You must submit your completed SSDI application to your local Social Security Administration (SSA) field office, not a central processing center. However, the SSA strongly recommends applying online or by phone, as mailing a paper application can cause significant delays and is not the standard procedure. Here is how to submit your application: Step 1: Locate Your Local SSA Office Use the SSA's online Field Office Locator, found on the official ssa.gov website. Enter your ZIP code to find the address and phone number for the office that serves your area. Step 2: Call Your Local Office Before Mailing Do not mail documents without calling first. Call your local office to confirm they accept paper applications by mail and to verify the correct mailing address. They may schedule a phone appointment with you to complete the application instead, which is often faster. Step 3: Complete the Required Application Forms If instructed to proceed with a paper application, you will need to complete several forms, primarily the Application for Disability Insurance Benefits (Form SSA-16) and the Adult Disability Report (Form SSA-3368-BK). Step 4: Gather Copies of Your Supporting Documents Collect copies (never originals) of documents such as your birth certificate or proof of citizenship, recent W-2 forms or self-employment tax returns, and a detailed list of your medical providers, including their addresses and dates of treatment. Step 5: Mail the Application Packet Mail the completed, signed forms and copies of your supporting documents to the exact address provided by your local SSA office. It is highly recommended to use a trackable method like USPS Certified Mail. Important Details and Nuances: Your local SSA office first reviews your application for non-medical eligibility (like work credits). If you are eligible, the SSA forwards your case to the California Disability Determination Services Division (DDSD). The DDSD is the state agency, acting under federal authority per California Welfare and Institutions Code § 10600.3, that makes the medical decision on your disability. Warnings and Limitations: Applying online at ssa.gov is the fastest and most reliable method. Mailing a paper application is the slowest method and risks your documents getting lost. An incomplete application will cause significant delays in processing your claim. This is general information and does not constitute legal advice. For complex situations, or if your application is denied, consult with a qualified California attorney specializing in Social Security disability.