2016 I worked 6 months for a company which had a $1500 deductible health plan. they contributed $750 to a HSA. Can I claim the tax credit for a high deductible health p

Yes, if your insurance plan meets the HDHP requirements, then you can claim the deduction for the HSA contribution. The HDHP deductible limit for 2016 is $1,300 for self coverage and $2,600 for family coverage.

https://www.healthinsurance.org/glossary/high-deductible-health-plan/