Modern contraceptive use in Pakistan remains low despite near-universal awareness, and the availability and organization of primary care services are recognized constraints. In 2025, selected 24/7 Basic Health Units (BHUs) in Punjab were converted into Maryam Nawaz Health Clinics (MNHCs), a contracted model of primary care. We examined whether family planning (FP) service use changed after conversion. We analyzed routinely collected monthly FP reports from the provincial district health information system for nine converted facilities in nine districts from June 2024 to May 2026. After the handover months (April–June 2025) were excluded, 199 facility-months remained (89 as BHUs, 110 as MNHCs). The prespecified primary outcome, total FP visits per facility-month, was analyzed by segmented (interrupted time series) mixed-effects regression with a facility random intercept, with a paired facility-level comparison (n = 9) as the fallback analysis; seven exploratory outcomes covering user categories and method mix were Holm-adjusted. FP visits were falling before conversion (−2.57 per month, 95% confidence interval [CI] −4.66 to −0.47). At conversion, visits rose by 58.85 (95% CI 39.62 to 78.09), and the trend changed by +4.80 visits per month, giving a postconversion slope of +2.24. Mean visits rose from 56.25 to 108.80 (adjusted difference 52.89, 95% CI 44.56 to 61.22; rate ratio 1.94), increasing for all nine facilities. The intrauterine contraceptive device (IUCD) share of FP visits rose by 14.7 percentage points (95% CI 11.84 to 17.51), increasing in all nine facilities and persisting when shares were recalculated among recorded methods only. Increases in the new-user, injectable and implant shares did not survive the paired analysis and are reported as suggestive. Visits not assigned to a method fell from 22.70% to 5.78%, so a concurrent change in reporting completeness cannot be ruled out. The design was uncontrolled, so these findings are associations rather than effects.