Yes, since I was a late bloomer, once I started high school, my pediatrician talked to my mom about my small size every year from age fourteen to sixteen when he would pull down my undies for the two of them to see my (lack of) genital development.
I'm realizing I never posted here this account of my earliest SPH in a medical setting, which I posted a couple months ago on another site dedicated to small penises. Here it is:
In my high school, we only needed one year of physical education credit to graduate, and most did gym class freshman year. We didn't shower (which in retrospect was gross), but we did change into and out of our gym uniforms in the locker room. Most of us wore tighty whities under our gym shorts back then, so I definitely knew in my first day of gym class that I had probably the smallest bulge of all the boys in my class. But I was also the youngest guy in my class, starting ninth grade when I was thirteen years old, so I figured I just wasn't big "yet."
However, at my well-child physical several weeks later, just after I turned fourteen, the pediatrician made a comment to my mom while he had my undies pulled down about how I "should start catching up to the other boys soon." I guess that means that my testicles had just finally started getting bigger. If he had said it at any other point in the exam, I'd have assumed it was because I was short in stature for my age.
If that weren't enough, my mom also basically confirmed how small my penis was during the drive home, when she asked me, "Is the reason you don't like gym class because your peepee is smaller than the other boys?" Being a not-yet-aware gay kid in the South, it was probably the best/safest thing that my hormones didn't kick in until after my year of gym class and its locker room were behind me. I didn't like gym solely because I was a computer nerd who got picked on for being a nerd, but of course my mom's question about my "small peepee" gave me something else to worry about. At least an untimely erection in the locker room wasn't yet a risk or concern.
So in addition to being the youngest in my class, I also was a fairly late bloomer. But once things got started, I suppose I took the normal amount of time to make it through puberty. I've read that typically the time between a boy's testicular volume increasing and his first ejaculation is about eighteen months. And sure enough, my first ejaculation was just a few months before my sixteenth birthday (from masturbating after seeing a dorm mate at science camp naked after his shower -- no mistaking that I was gay by that point).
But already several months earlier, both my pediatrician and my mom seemed much happier with my progress when he pulled down my undies at my fifteen-year-old exam. And by the time I had my sixteen-year-old exam, the doctor told my mom I was "back on track" and "probably will keep growing even after he starts college." He said that after he had pulled my undies back up, so maybe the comment wasn't necessarily about my penis. I did grow so much during science camp that summer when I was fifteen that the suit I brought for the final ceremony barely fit at the end of the month, with the pants cuffs barely at my ankles.
And I did keep growing, at least height-wise, not getting to my current height until I was nineteen and a sophomore in college. But when my pediatrician and my mom saw my penis at my sixteen-year-old well-child physical, that was as big as it ever got. We had switched to a new family doctor by the time I was seventeen, and I went into the exam room by myself (my mom was down the hall where my fourteen-year-old brother was simultaneously getting his first sports physical for high school teams -- he was not a late bloomer and basically as big as me despite being a few years younger). The family doctor didn't say anything of note when he had me pull my shorts down for the hernia test, and I don't know if he even had my history of delayed puberty in the file. He probably just assumed I was naturally on the small side of average.
I didn't date at all in undergrad (and didn't come out as gay until I was a junior), and I also still avoided gyms and locker rooms -- once and always a computer nerd. But when I did start dating in grad school, every guy I fooled around with was bigger than I was. One guy's eight inches so dwarfed my five-and-a-half, that I basically started filtering out guys who claimed to be big. I ended up marrying the first and only guy I ever dated with a smaller penis than my own, and his still seems bigger proportionally, since he's not a tall guy. I recognize my five-and-a-half inches puts me technically in "average" territory, but I'd never have known it from firsthand experience. Mine has been smaller than all but one I've ever seen in real life. Thank goodness for the Internet!