This is a classic example of an ambiguous sentence, where "he" could refer to the doctor or someone else. Here are a few ways to continue the sentence, depending on who is late:

**If "he" refers to the doctor:**

*   The doctor phoned the nurse because he was late **and needed her to reschedule his first appointment.**
*   The doctor phoned the nurse because he was late **and wanted her to apologize to the patients in the waiting room.**
*   The doctor phoned the nurse because he was late **and asked her to start the patient's prep without him.**

**If "he" refers to a patient:**

*   The doctor phoned the nurse because he was late, **and the doctor wanted to know if the patient had checked in yet.**
*   The doctor phoned the nurse because he was late, **and they needed to decide whether to see the next person.**
*   The doctor phoned the nurse because he was late **for his follow-up, and she needed to check his file for a contact number.**

**For a more dramatic twist (if "he" is someone else entirely):**

*   The doctor phoned the nurse because he was late **with the lab results, and they couldn't wait any longer.**
*   The doctor phoned the nurse because he was late, **and he was the specialist they were all waiting on for the emergency consult.**
