Is Universidad San Marcos officially listed as a higher-education provider in Mexico?

Yes. Universidad San Marcos is represented in SEP's current national work-centre catalogue under parent CCT 07MSU0011O. This confirms the dated provider identity and current catalogue presence, not every programme or professional entitlement.

Where is Universidad San Marcos located?

SEP records Universidad San Marcos's provider headquarters in TUXTLA GUTIÉRREZ, CHIAPAS. The recorded address is CALLE CUARTA NORTE ORIENTE, 2284, 0, PRIMERO DE MAYO, TUXTLA GUTIÉRREZ, CHIAPAS, 29040. The SEP-designated institutional website is https://www.usam.edu.mx.