Jean Gross said cuts to council and NHS services coincided with a huge increase in the number of children needing help.
Research suggested 28% of parents found it hard to find support, compared with just 18% two years earlier, she said.
Ministers say the new health bill will ensure GPs were better placed to help.
In her report concluding her two years in post, Mrs Gross said there was "an increased awareness of the centrality of good communication skills to children's learning, well-being and life chances".
Ms Gross called for all nurseries with disadvantaged two-year-olds to have staff with training in language development.
And she urged schools to screen children with behaviour difficulties to identify any underlying speech, language and communication needs they may have.
The British Stammering Association echoed Mrs Gross's concerns about cuts. Its chief executive Norbert Lieckfeldt said: "We are seeing evidence of service cuts across the country with specialist posts not being filled, growing waiting lists and falling numbers of referrals.
"This is deeply concerning. If a child is stammering early and prompt intervention could help them to recover completely. Failing to intervene is forcing these children to a lifetime of stammering."
With thanks to www.bbc.co.uk
To read the full story go to:
http://www.bbc.co.uk/news/education-16548559
