What is the best healthcare IT certifications?

depends on your area of interest. 

For your designation and industry, I will highly recommend PMP and information security cerification.

I can advise you how to get certified.

Hi Khadir,

You can look for CPHIMS,CAHIMS,Health Informatics.

Registered Health Information Administration (RHIA)

Those are some of the best certifications that HCIT Engineer must have:

• CompTIA
• CPHIT
• CIIP
• CPHIMS

It will be depended on your needs (Hospital or clinics).