Ten provinces with lowest out-patients: 2009 - 2011
 2009 
RankProvincesOut-patients
1Ranong490,645
2Kalasin506,497
3Amnat Charoen665,560
4Mae Hong Son700,123
5Pangnga701,510
6Satun711,835
7Nakhon Phanom716,129
8Trat756,780
9Samut Songkhram768,009
10Nakhon Nayok775,702
 Whole Kingdom152,428,645
 2010 
RankProvincesOut-patients
1Ranong433,618
2Satun641,596
3Mae Hong Son742,464
4Amnat Charoen755,173
5Trat779,266
6Pangnga783,612
7Nakhon Nayok806,745
8Sing Buri814,494
9Mukdahan827,667
10Yala895,991
 Whole Kingdom164,766,694
 2011 
RankProvincesOut-patients
1Ranong479,748
2Nakhon Nayok581,408
3Amnat Charoen738,588
4Trat778,908
5Mae Hong Son814,306
6Pangnga875,113
7Satun894,146
8Sing Buri937,680
9Phuket938,941
10Bueng Kan949,228
 Whole Kingdom170,790,297
Source : Office of the Permanent Secretary for Public Health, Ministry of Public Health
Compiled by : Statistical Forecasting Bureau,  National Statistical Office