You can submit a 21-4138 Statement in Support of Claim to start the clock on the application without the Dr's report. See this link from our FAQ's
http://www.veteranaid.org/faq/index.php?action=artikel&cat=2&id=8&artlang=en The dr's the Dr's eval does not start the clock. You need to either submit the Informal Claim or submit an application package with the 21-526 completed with all supporting documents.
Applicationsfor this pension from the state of AZ are processed at the St Paul Center
St Paul Pension Maintenance Center
Veterans Administration
1 Federal Drive, Fort Snelling
St. Paul, MN 55111-4050