Why should you care?

Healthcare apps need strict RBAC, audit logs, and minimal PHI exposure in APIs.

See it live — copy this example

Paste into your MeanVerse project (Angular + Express + MongoDB), then run with ng serve / node / mongosh as noted.

// meanverse-health/
//   api/src/routes/patients.routes.ts
//   web/src/app/features/health/patient.service.ts

router.get('/patients/:id', auth, requirePermission('patients:read'), async (req, res, next) => {
  try {
    const patient = await Patient.findOne({ _id: req.params.id, orgId: req.user.orgId })
      .select('name mrn appointments');
    if (!patient) return res.status(404).end();
    audit.log('PATIENT_VIEW', req.user.id, patient.id);
    res.json(patient);
  } catch (e) { next(e); }
});

@Injectable({ providedIn: 'root' })
export class PatientService {
  private http = inject(HttpClient);
  get(id: string) { return this.http.get<Patient>(`/api/health/patients/${id}`); }
}

What happened?

• select limits fields returned — no unnecessary PHI.
• orgId scopes query to clinic.
• audit logs every view for HIPAA.
• Angular service consumes filtered DTO.

Practice next

1. Define roles: nurse, doctor, billing with different permissions.
2. Encrypt highly sensitive fields at rest.
3. Angular appointment calendar with provider filter.
4. Add break-glass emergency access with extra logging.
5. Implement patient portal read-only Angular route.

Remember

Healthcare = scoped PHI + audit + RBAC. Project only fields UI needs. orgId isolates clinic data.

Multi-clinic network

Nurse searches patient by MRN across assigned wards only.

Outcome: RBAC + audit satisfies HIPAA minimum necessary standard.