Average turnaround statistics show that health providers will release medical records and imaging at this general rate: 60% of all your records in 30 days, 90% in 60 days, and 99% in 90 days. To be safe and ensure you have those medical records for a doctor's visit or personal injury trial, you should ensure to request records at least 3 - 4 months before they are required to be used.
When dealing with larger hospital networks some providers may offer an "Urgent" request for an extra fee. This offering is not widespread and can be costly with fees ranging from $150 to upwards of $400. It is also not guaranteed that you receive a request in the specified timeframe when making an urgent request. Whenever possible we recommend request medical records and imaging at least 3 - 4 months in advance of their required use.
The truth is that doctors are extremely busy people and records may not be in one place.