shine on a fourth-year sub-internship and earn strong letters of recommendation

My acting internship in internal medicine starts next month, and I am hoping to ask the inpatient attending for one of my primary ERAS letters of recommendation. What separates a strong sub-intern from a good third-year clerk, and when is the best time during the four-week block to ask for a letter?

The transition from MS3 to sub-intern comes down to ownership and anticipation. As an MS3 you report what happened; as a sub-intern you act as the patient’s primary intern under supervision:

1. **Close the loop without being asked:** Follow up on afternoon potassium replacements, pending CT reads, microbiology gram stains, and consultant recommendations before the senior resident asks, and update the team.
2. **Own transitions of care:** Start discharge summaries, medication reconciliations, and outpatient follow-up planning 48 hours before discharge, and call primary care or family members to clarify baseline function.
3. **Support the MS3s on the team:** Helping third-year students practice their presentations or teaching a 3-minute chalk talk on hyponatremia shows teamwork and resident readiness.

For the letter of recommendation, ask for a brief midpoint feedback check-in at the end of Week 1 of that attending’s service block ("I am strongly applying into internal medicine and would love any feedback on how I can function at an intern level this week"). Then, on the final day you work together while specific patient stories are fresh in their mind, ask: "Do you feel you know my clinical work well enough to write a strong, supportive letter of recommendation for my residency application?"

Send a brief update email to your letter writers on Match Day too—they genuinely care where their students end up training.

Never make the intern look bad to make yourself look good; the residents’ input to the attending heavily shapes your sub-I evaluation and letter.

Asking for midpoint feedback in Week 1 is huge—it signals enthusiasm and gives you a full week to implement the attending’s specific suggestions, which they often mention right in the letter!

Follow up your in-person letter request within 48 hours with an organized packet: your CV, draft personal statement, ERAS letter request form, and 3 to 4 bullet points reminding them of specific patients you managed together.

Include those specific patient anecdotes in your thank-you email! Attendings write much stronger, more vivid letters when they can cite the exact patient where you caught a subtle clinical change or led a family goals-of-care conversation.

Phrasing the request as "a strong, supportive letter" gives an attending a polite off-ramp if they feel they did not work with you closely enough.

When calling a consult, use a crisp SBAR structure: state the patient’s age, admission diagnosis, stability, and the specific clinical question you are asking the consulting service right in the first sentence.

Volunteer to take admissions that arrive in the afternoon and present them concisely on post-call rounds.