Abstract Background and Aims CKD patients are usually free from symptoms. Some of them do not wish to visit a physician until the very moment when they suffer from symptoms. Those CKD patients might be found more often in certain medical specialities than others. In order to improve healthcare system efficacy, it is imperative to find the best field we should dig in. Method A hospital-wide survey was performed including all the patient visits according to specialities over 365 days in a general hospital. All the laboratory data including eGFR and haemoglobin were retrieved during the period. In case of multiple laboratory measurements in a single patient, a median value was used for analysis. Prevalence of cases with at least one measurement of eGFR during the period was 5 559/11 582 (48.0%) in medicine, 1 195/2 405 (49.7%) in surgery, 691/3 301 (20.9%) in orthopaedics, and 2 808/12 450 (22.5%) in “other” specialities. Here, “other” specialities are highly heterogeneous, including gynecology, dermatology, ophthalmology, otorhinolaryngology, anesthesiology and urology. Results A total of 29 738 patients were analyzed. The prevalence of eGFR less than 60 mL/min/1.73 m2 was highest in orthopaedics (353/691, 51.1% among patients with eGFR measurement), much more than those in medicine (2,341/5,559, 42.1%), in surgery (364/1 195, 30.5%) or in others (1 052/2 808, 37.4%). The prevalence of eGFR less than 45 mL/min/1.73 m2 was highest again in orthopaedics (133/691, 19.2%), much more than those in medicine (794/5 559, 14.3%), in surgery (80/1,195, 6.7%) or in others (339/2,808, 12.0%). The prevalence of renal anemia, defined as eGFR <60 mL/min/1.73 m2 and haemoglobin <11 g/dL, was highest in orthopaedics (74/691, 10.7%), compared with those in medicine (302/5 559, 5.4%), in surgery (35/1 195, 2.9%) or in others (123/2 808, 4.5%). Conclusion For an efficient CKD healthcare delivery, the exceedingly high prevalence of CKD among patients visiting orthopaedics should not be missed.