ISO 45001 is an international standard, intended to be used by any organization, in any industry, anywhere in the world. As such, it is written to be flexible in nature, giving requirements that describe what needs to be, but not how to do it. So, the standard will not give details such as who does and does not need to be included in a management review; only that a management review needs to happen, certain data needs to be reviewed, and records need to be kept. In this case, not all organizations would have access to a doctor for this review, so the standard will not identify this as a requirement.
So, it is up to your organization to determine who needs to be included in your management review. If you do have a doctor on site they may be a valuable asset to this process, but ISO 45001 does not require that a doctor take part.
You can learn a bit more about how management review works in the article: