I would think the groove weld qualification covers them for fillet welds. I don't have D15.1 but in D1.1 Table 4.10 if you are qualified for grooves then you are qualified for fillets. Note h refers you to 4.25 and 4.28.
4.25 Fillet welds for Non tubular Connections
Qualification of CJP groove welds shall qualify for fillet welds. However, where only fillet welds is required, see Table 4.11.
Unless there is a paragraph, table or note similar to the one in D1.1 I would say you have to qualify in both a groove and fillet test.