If insured status or the PIA is affected by the exclusion of the PHS service, suggest
            that the claimant contact OPM to determine:
         
         
            - 
               
                  a.  
                     if eligible for a Civil Service annuity based on the service in question; and 
 
 
- 
               
                  b.  
                     the effects on present and future Civil Service payments if they waive the annuity
                        based on the service.
                      
 
 
Advise the claimant to write to OPM at this address:
         
            - 
               
                    
                     
                        Office of Personnel Management
 Civil Service Retirement Section
 Chief of Section
 Post Adjudicative Division
 1900 E. Street, N.W.
 Washington, DC 20415
 
 
Mark the envelope “Deliver Unopened.” The letter should refer to the P.L. that applies.