I have Created 2 Objects as Physician__c and Physician_Contact__c. I want two search records on the basis of Name and Email in Physician__c and display the result on same Visualforce page. With each record I need a radiobutton. There is one Add Physician Button on same visualforce page that will add the selected record's Name to  Physician_Contact__c Object.
I have successfully implemented the search and display Funationality.
But I am not able to successfully fetch the value associated with selected radio button. Can anyone suggest how i should Implement this functionality.

My Visualforce Page:

<apex:page standardController="Contact" extensions="ctrlSearch">

<script>
    function dislayDetails(){
             alert("You are not allowed to delete this credit card entry");
            }
</script>

<style>


input[type=text], select, textarea {
  width: 50%;
  padding: 12px;
  border: 1px solid #ccc;
  border-radius: 4px;
  margin-top: 6px;
  margin-bottom: 16px;
  resize: vertical;
}

</style>
<script>
    function valueChanged(){
        if(document.getElementById("is_BMW").checked == true)
        {
            document.getElementById("is_Mercedes").checked = false;
        }
        else
        {
            document.getElementById("is_BMW").checked = false;
        }
    }
</script>

    <apex:form >
        <apex:pageBlock >
            <apex:pageBlockSection >
                <apex:outputLabel >Name </apex:outputLabel>
                <apex:inputtext value="{!strAccSearchString}"/>
                <apex:outputLabel >Email </apex:outputLabel>
                <apex:inputtext value="{!strAccSearchString1}"/> 
            </apex:pageBlockSection>
            
            <apex:pageBlockSection >
                <apex:commandButton value="Search" action="{!SearchAccountRec}"/> 
            </apex:pageBlockSection>
            
                      
        </apex:pageBlock>
            
            
           
                   
  
        
        <apex:pageBlock rendered="{!IF(AND(NOT(ISBLANK(lstAccount)),lstAccount.size>0),true,false)}" title="Search Result">

            <apex:pageBlockTable value="{!lstAccount}" var="acc">
                <apex:column >
                <apex:facet name="header">Select</apex:facet>
                      <apex:selectRadio value="{!idSelected}" styleClass="myChk" onclick="is_checked">
                                <apex:selectOption itemValue="{!acc.Id}" ></apex:selectOption> 
                      </apex:selectRadio>                               
                </apex:column>      
                 <apex:column >
                    <apex:facet name="header">Name</apex:facet> 
                    <apex:outputLink value="{!acc.id}">{!acc.Name}</apex:outputLink>                       
                </apex:column>
                <apex:column >
                <apex:facet name="header">Email</apex:facet>   
                     <apex:outputField value="{!acc.Email__c}"/>  
                </apex:column>                 
            </apex:pageBlockTable>          
        </apex:pageBlock>   
        <apex:pageBlock >
            <table>
                <apex:repeat value="{!lstAccount}" var="acc">
                    <apex:selectOption value="{!items}"></apex:selectOption>
                </apex:repeat>
            </table>
        </apex:pageBlock>    
       <apex:pageBlock >
            <apex:pageblockSection >
                <apex:commandButton value="Create New Physician" action="{!URLFOR($Action.Physician__c.New)}"/>
                <apex:commandButton value="Add Physician" action="{!insertRecord}"/>               
             </apex:pageblockSection>
        </apex:pageBlock>

        
 

</apex:form>
</apex:page>

My Apex Controller:

public class ctrlSearch {


    public string strAccSearchString {get; set;}
    public string strAccSearchString1 {get; set;}
    public List<Physician__c> lstAccount {get; set;}
    public List<Physician__c> phy {get;set;}
    public Physician__c phy1 {get;set;}
    public boolean isResultDisplay {get; set;}
    public String idSelected{get;set;}
    

	

    private apexpages.standardController controller {get; set; }
    public ctrlSearch(ApexPages.StandardController controller)
	{
		this.controller = controller;
        idSelected ='';
	}
    public ctrlSearch(id idSelected){
      
      this.idSelected=idSelected;
      isResultDisplay = false;
    }


    public void SearchAccountRec(){

        isResultDisplay = true;
        string strLikeString = '%'+strAccSearchString+'%';
        string strLikeString1 = '%'+strAccSearchString1+'%';


        string strSOQL = 'select id,Name,Email__c from Physician__c where Name like :strLikeString and Email__c like:strLikeString1';

        lstAccount = database.query(strSOQL);

        
        
    }

	public List<SelectOption> getItems() {
  			List<SelectOption> options = new List<SelectOption>(); 
  			for (Physician__c a : lstAccount) {
  			  options.add(new SelectOption(a.Id, a.Name));
 			 }
  		return options; 
		}
 
    public void insertRecord()
    {
   		idSelected = apexpages.currentpage().getparameters().get('selected');
        System.debug('Value ' +idSelected);
    }
    public void checkSelectedValue(){        
        system.debug('Selected value is: ' + idSelected);        
    } 
    
  
    
   
    
 }

Output: