Parents usually arrive having been told something is different, and not what. An autism evaluation answers that with structured observation and standardized instruments rather than impressions, and then says plainly what it means.

Children are assessed at their pace, not at the schedule’s.
Structured observation, standardized testing, and an explanation a parent can actually use.
Observation, history and rating scales, with the differential reasoning written out rather than implied.
Structured observation scored against norms, administered by the evaluator rather than delegated.
The early history a single session cannot show, taken from the people who were actually there.
Home and school, because presentation differs by setting and that difference is itself diagnostic.
What else could account for the presentation, and why it does not. Language, anxiety and attention are each addressed explicitly.
Directly by the evaluator, so a bilingual child is never assessed through a third party.
ADHD testing, dyslexia and learning disability testing, and independent educational evaluations are each available separately.
Where a screener said follow up and nobody explained what with.
Autism testing on a private timeline rather than a waitlist.
Assessment conducted in Spanish, so a language difference is not read as a developmental one.
It starts with a conversation about what you are seeing. The evaluation itself combines structured observation using the ADOS-2, a developmental history taken from the people who have known your child longest, and rating scales from home and school. You get a written report and a meeting to go through it.
Every evaluation is conducted by Dr. Tom Naratadam himself, not delegated. His degrees, licenses and scope of practice are set out in full on the About page.
It depends on your child. Some children complete it in one session, others need it spread across several so that nothing is rushed. You get an estimate for your situation at the consultation.
Yes, directly by the evaluator, so a bilingual child is never assessed through an interpreter. A language difference should not be read as a developmental one.
If the question is really attention or language, you should hear that before booking testing.