Siman 421
Presented here for study, not as a practical ruling. The Shulchan Aruch rules by Sephardi custom, the Rema's glosses by Ashkenazi custom, and the Kitzur follows Ashkenazi custom. For a practical question, ask your rabbi.
א נוֹהֲגִין בְּאַשְׁכְּנָז שֶׁאוֹמְרִים פָּרָשַׁת וּבְרָאשֵׁי חָדְשֵׁיכֶם שַׁחֲרִית אַחַר פָּרָשַׁת הַתָּמִיד. וּבִסְפָרַד אֵין נוֹהֲגִין לְאָמְרָהּ, לְפִי שֶׁעֲתִידִין לִקְרוֹת אוֹתָהּ בַּסֵפֶר תּוֹרָה.
1 The recitation of "And on your new moons" in Pesukei Dezimra. Contains one section The custom in Ashkenaz is to recite the passage of "And on your new moons" in the morning service after the passage of the daily offering. In Sepharad the custom is not to recite it, since it will be read later from the Torah scroll.