hospital_management-8.x-1.x-dev/web/modules/hms/hms_doctors/src/Controller/DoctorController.php

<?php

namespace Drupal\hms_doctors\Controller;

use Drupal\Core\Controller\ControllerBase;
use Drupal\user\Entity\User;

/**
 * Class DoctorController.
 */
class DoctorController extends ControllerBase {

  /**
   * Adddoctor.
   *
   * @return string
   *   Return Hello string.
   */
  public function addDoctor() {
    $entity = User::create();
    $user_form = \Drupal::service('entity.form_builder')->getForm($entity, 'doctor');
    return $user_form;
  }

}