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Abstract We present a multi-epoch spectroscopic study of LkCa 4, a heavily spotted non-accreting T Tauri star. Using SpeX at NASA’s Infrared Telescope Facility (IRTF), 12 spectra were collected over five consecutive nights, spanning ≈1.5 stellar rotations. Using the IRTF SpeX Spectral Library, we constructed empirical composite models of spotted stars by combining a warmer (photosphere) standard star spectrum with a cooler (spot) standard weighted by the spot filling factor,f_spot. The best-fit models spanned two photospheric component temperatures,T_phot= 4100 K (K7V) and 4400 K (K5V), and one spot component temperature,T_spot= 3060 K (M5V) with anA_Vof 0.3. We find values off_spotto vary between 0.77 and 0.94 with an average uncertainty of ∼0.04. The variability off_spotis periodic and correlates with its 3.374 day rotational period. Using a mean value forf^mean_spotto represent the total spot coverage, we calculated spot corrected values forT_effandL_⋆. Placing these values alongside evolutionary models developed for heavily spotted young stars, we infer mass and age ranges of 0.45–0.6M_⊙and 0.50–1.25 Myr, respectively. These inferred values represent a twofold increase in the mass and a twofold decrease in the age as compared to standard evolutionary models. Such a result highlights the need for constraining the contributions of cool and warm regions of young stellar atmospheres when estimatingT_effandL_⋆to infer masses and ages as well as the necessity for models to account for the effects of these regions on the early evolution of low-mass stars.