Frontline workers are instrumental in bridging the gap in the utilization of maternal health services. We performed a qualitative cross-sectional study with medical officers, accredited social health activists (ASHA), and auxiliary nurse midwifes (ANM), across 13 districts of India, in order to understand the barriers and enablers, at the system and population levels, for improving access of adolescents and mothers to services. The data were collected by means of in-depth interviews (IDI) with medical officers and focus group discussions (FGD) with ASHA and ANM in 2016. The interview guide was based on the conceptual framework of WHO health interventions to decrease maternal morbidity. Content analysis was performed. In total, 532 frontline workers participated in 52 FGD and 52 medical officers in IDI. Adolescent clinics seemed nonexistent in most places; however, services were provided, such as counselling, iron tablets, or sanitary pads. Frontline workers perceived limited awareness and access to facilities among women for antenatal care. There were challenges in receiving the cash under maternity benefit schemes. Mothers-in-law and husbands were major influencers in women’s access to health services. Adolescent clinics and antenatal or postnatal care visits should be seen as windows of opportunities for approaching adolescents and women with good quality services.