All the London railway stations :
Moorgate station - in May 2019
Moorgate entrance to station, opposite side of road - in May 2019
Moorgate, Crossrail build - in May 2019
Underground lines : Northern, Metropolitan, Hammersmith & City, Circle, National Rail First Capital Connect
Accessibility friendly : No. Partial National Rail station.
The new Moorgate station being built as part of Crossrail and the Elizabethan line should be mega-accessible, but is running a couple of years late.
Moorgate is not accessible to wheelchair users due to stairs
between the platform and street level. There is escalator interchange between Northern line and Circle, Hammersmith & City and
eastbound towards Liverpool Street only.
General description : See wiki
More comment : National Rail Guide & Maps - It looks like the partial access at the National Rail station is that you can cross platforms; but there are no ramps available, so I would avoid this station.
Inclusive Britain Station Guide