using seed method in migration

initally using code first approch i created db and tables . inserted few records using the form

now i am trying to use seed method in configuration.cs to added more test data .

but having issue with key. below is patient and patient address model having  1 - 1 relationship

patient model

 public int PatientID { get; set; }


         [Display(Name = "Last Name")]
        public string LastName { get; set; }


         [Display(Name = "First Name")]
        public string FirstName { get; set; }

        public float age { get; set; }
        public string Mobile { get; set; }

  public virtual PatientAddress PatientAddress { get; set; }

patient address model

 [Key]
        [ForeignKey("Patient")]
        public int PatientID { get; set; }

        public string Address1 { get; set; }
        public string Address2 { get; set; }
        public string City { get; set; }
        public string State { get; set; }


       public virtual Patient Patient { get; set; }

when  adding records in the address using seed method how do i refer the patientid?

seed method of config.cs

 context.PatientAddress.AddOrUpdate(
               p => p.PatientID,
               new PatientAddress() { Address1 = "Address1  ", Address2 = "", City = "City1", State = "State 2"  },
               new PatientAddress() { Address1 = "Address1 22 ", Address2 = "Address2 44", City = "City2", State = "State 33"  },
               new PatientAddress() { Address1 = "Address1 777 ", Address2 = "Address2 66", City = "City3", State = "State 44" },
               new PatientAddress() {Address1 = "Address1 44 ", Address2 = "Address2 477", City = "City4", State = "State 232"  }
               );