The KKM Klinik Kesihatan got Category 1,2 & 3. Usually the Klinik Kesihatan will have their own compound like below & they can be easily be identified with the KKM logo at the entrance ( red crescent logo )

The image was copied from the internet.
Another type of Klinik is the Klinik Komuniti KKM ( previosuly known as Klinik 1Malaysia) , refer to the history of the decision
https://www.malaysiakini.com/news/431573The photo of the Klinik Komuniti KKM is as below. Klinik Komuniti usually will be housed at the shop lot but do take note, they do not dispense full range of medication & no Medical Certification will be issued at Klinik Komuniti.

The image was copied from the internet.
If you intend to get treatment by the Doktor Pakar, you need to visit the Klinik Kesihatan first ( don't go Klinik Komuniti, they don't issue recommendation letter / MC). After meeting up the doctor at KK, they will write you a recommendation based on your illness / conditions to the nearest Hospital ( with the specialist ).
Your first attempt at KK will consume a lot of the time. Your 1st meet up with the specialist at the Government Hospital will consume a lot of your time. Your following visit / follow up visit, it will be smoother as there are pre-set date of appointments.