Every country builds one of these eventually. Turkey has e-Nabız. When a
leak was alleged last year the ministry answered that the data is too
large to fit on an external drive, which is not a security control.
The article is poorly worded. MyDr aka znanylekarz.pl is not mandated officially. It's what private practices use for appointments and medical records. What public hospitals mostly use is an on-prem version of GCM Clininet.
There is however a national system called P1 and in 2020 there was a scandal about the Gemini chain of pharmacies accessing records illegally.