hi elly yes i had low vitd3, i had to request the test to find out, as you did. a few glitches involved in that but it got sorted out. i never did get referred to another specialist. i don't think my doc knew that much about it.
if you need a quick boost here's what i did (but it's not in your units sorry - the conversion is 1 of yours = 2.496 of mine, so just divide everything by 2.5 and you should be okay.
my levels were 72 (28.
[edit: that is, 2 8 . 8] when i first got tested and i had already been taking 2000IU and more d3 for a couple of months.
i found a study which let me calculate how long it would take to get to a better level over 100 or so, using that dosage. it was months and months. i was impatient.
i called the hospital and they said they can boost a patient's serum levels 50 (20) units in a short time by giving 50,000IU per day for 10 days.
i did this and on my followup test my level was 149. i used 4000IU per day as a maintenance dosage after that but i did not properly balance my calcium magnesium and zinc dosage with it, so that's something to watch out for.
i have since slacked off on the d3, and on a test earlier this year i was back down in the 70s, so it's time for another 10-day blast.
this is all by way of saying you may want to consider a higher daily, and you may want to think about ensuring those minerals get into the picture also.
i haven't looked into why an endocrinologist would be recommended for you, but i'm sure there are a few people here who can enlighten