sis_stock_transfer/views/res_partner.xml

<?xml version="1.0"?>
<openerp>
    <data>

      <record model="ir.actions.act_window" id="appointment_tree_view">
         <field name="name">Consultas</field>
         <field name="res_model">sis.stock.transfer</field>
         <field name="view_type">form</field>
         <field name="view_mode">tree,form</field>
         <field name="view_id" ref="sis_appointment_tree_view"/>
         <field name="context">{'search_default_partner_id': active_id}</field>
         <field name="arch" type="xml">
             <tree string="Consultas">
                 <field name="name"/>
             </tree>
         </field>
     </record>

      <record id="view_sis_partner_form" model="ir.ui.view">
            <field name="name">view_sis_partner_form</field>
            <field name="model">res.partner</field>
            <field name="inherit_id" ref="base.view_partner_form"/>
            <field name="arch" type="xml">
                <xpath expr="//div[@name='buttons']" position="inside">
                  <button name="%(appointment_tree_view)d"
                          type="action"
                          class="oe_inline oe_stat_button"
                          icon="fa-user-md"
                          context="{'search_default_partner_id': active_id}">
                    <field string="Consultas" name="appointment_count" widget="statinfo"/>
                  </button>
                </xpath>
            </field>
        </record>
    </data>
</openerp>