Recommendation Letter for Medical Residency

The Electronic Residency Application Service (ERAS), administered by the AAMC, is the centralised application platform for nearly all US residency programmes. The annual application timeline: ERAS opens for applicant entry in early June, programmes begin reviewing applications in mid-September (the exact date varies by specialty under the ERAS Supplemental ERAS Application timeline introduced in recent cycles), interviews run from October through January, and the National Resident Matching Programme (NRMP) Match Day announces results in mid-March.

Letters of Recommendation are uploaded by the recommender (or the recommender's designee, often the department coordinator) through the ERAS Letter of Recommendation Portal (LoRP). The candidate creates a Letter Request Form for each letter, including a unique Letter ID, and notifies the recommender. The recommender uploads a PDF, and ERAS associates it with the candidate's file and routes it to every programme the candidate has designated to receive that specific letter. The candidate can have different letters routed to different programmes (helpful for candidates dual-applying to two specialties or to programmes with very different cultures).

The practical implication for recommenders: a candidate applying to forty residency programmes does not generate forty upload requests per recommender; the letter is uploaded once and distributed to all designated programmes. The recommender's logistical burden is roughly one upload per candidate per cycle. The candidate's responsibility is to consolidate the request, provide the recommender with a current CV, MSPE draft when available, personal statement, and a list of programmes the letter should accompany.

The Medical Student Performance Evaluation (MSPE), prepared by the medical school's dean of student affairs office and released to ERAS on a coordinated national date (October 1 in recent cycles), is the institutional summary letter. It compiles the candidate's clerkship grades, narrative comments from each rotation, professionalism notes, and a final summative ranking, typically expressed as a categorical designation (Outstanding, Excellent, Very Good, Good) with a stated percentage of the class in each category.

The MSPE is not authored by an individual mentor; it is an institutional document with its own conventions. The AAMC publishes recommended MSPE format guidelines (the "MSPE Guidelines" document) that most schools follow, including a Unique Characteristics paragraph, Academic History, Academic Progress narrative, and Summary paragraph. Programme directors read the MSPE alongside the LORs and use the MSPE for institutional context (where does this candidate rank within this school's class) and the LORs for individual evaluation depth.

The implication for LOR writers is that the MSPE will have already given the programme director the basic academic profile. The LOR does not need to repeat the clerkship grades; it needs to add the specific clinical observations, judgement calls, and personal qualities that the MSPE cannot convey at the institutional level. The strongest LORs treat the MSPE as the foundation and build on it rather than restate it.

Most US medical schools offer (and many residency programmes expect) a department chair letter from the candidate's intended specialty. The chair letter is written by the home institution's department chair or programme director in the candidate's specialty, drawing on input from the clerkship directors and faculty who have supervised the candidate. It functions as an institutional summary specific to the candidate's specialty preparation, parallel to the MSPE's broader institutional summary.

The chair letter is generally not optional for candidates applying to competitive specialties (Orthopaedic Surgery, Dermatology, Plastic Surgery, Otolaryngology, Neurosurgery, Urology, Radiation Oncology) where its absence is read as a signal that the home department does not endorse the candidate. For less competitive specialties (Family Medicine, Internal Medicine at non-competitive programmes), the chair letter is helpful but not always required.

For candidates from medical schools without an in-house residency programme in their intended specialty, the chair letter is more difficult to source. The substitution strategy: an unusually strong letter from the clerkship director, supplemented by letters from rotations at affiliated institutions where the candidate has trained. Programme directors at the receiving end understand the institutional constraint and read the absence of a chair letter from such schools without prejudice.

Several specialties have adopted structured letter formats to reduce the variability of narrative letters. Emergency Medicine pioneered this approach with the Standardised Letter of Evaluation (SLOE), now in its second-generation form. The SLOE asks the recommender to rate the candidate on specific clinical dimensions (clinical knowledge, procedural skill, decision-making in emergencies, communication, ability to work in a team, professionalism), to provide brief narrative comments at fixed prompts, and to give a comparative ranking against the recommender's recent EM rotators. The form is completed online through the Council of Residency Directors in Emergency Medicine (CORD-EM) SLOE portal.

The Orthopaedic Surgery SLOR, the Plastic Surgery SLOR, and the Dermatology Standardised Letter all serve similar functions in their respective specialties. The forms differ in detail but share the structural goal: substitute consistent rating scales and comparative rankings for narrative variability, so programme directors can read across institutions more reliably.

For recommenders, the standardised forms are less work in some ways (no extended narrative drafting) and more demanding in others (the rating scales force calibration the recommender might prefer to avoid). Inflated rankings on standardised forms are quickly visible to programme directors who read hundreds across a cycle. The norm is to mark the candidate as "Top Tier" on dimensions of genuine strength, "Middle Tier" on dimensions where the candidate is solid but not exceptional, and rarely if ever "Lower Tier" (which would signal the recommender does not want to advocate for the candidate). The free-text comment fields are where the recommender adds the specific clinical incidents that the form's ratings cannot capture.

An away rotation (also called a visiting elective, sub-internship, or audition rotation) is a four-week clinical rotation at a residency programme other than the candidate's home institution, completed during fourth year of medical school. The rotation serves both as clinical training and as an opportunity for the host programme to evaluate the candidate as a potential future resident. A letter from a faculty member at the host institution carries significant weight because it represents direct observation by the programme considering admission.

In Emergency Medicine specifically, two SLOEs from away rotations are essentially required by mid-tier and competitive programmes. The candidate completes two or three away rotations, generates SLOEs from each, and includes them in the ERAS application. The pattern is documented in CORD-EM's annual applicant guidance materials.

In other competitive specialties, away rotations and audition LORs are common but not universally expected. The trade-off: away rotations cost the candidate four weeks of fourth year and approximately $3,000 to $6,000 in travel and housing per rotation (2026 estimate, varies by location and accommodation). The decision should be made specialty-by-specialty based on competitiveness, the strength of the candidate's home institution letters, and whether specific programmes the candidate is targeting have implicit or explicit away-rotation expectations.

ERAS opens in early June; programmes begin reviewing applications on a date that varies by specialty under the supplemental ERAS application schedule. For most specialties, the practical target for a complete application file is mid-September, which means LORs need to be uploaded by then. Candidates applying to specialties that participate in early result programmes or have early interview decisions may need letters earlier.

The recommender's lead time should be at least four to six weeks. Fourth-year medical students typically ask in mid-July for a mid-September deadline. The materials the recommender needs: the candidate's current CV, the MSPE if released (often not yet available at the time of the request), the personal statement, the list of programmes the letter should be distributed to, and the candidate's brief reminder of the specific clinical encounters or cases the recommender might want to reference. A one-page document summarising the rotation experience together is genuinely useful for recommenders who supervised many students that year.

A recommender asked in late August for a mid-September deadline is being asked too late. The most candid response in that situation is to acknowledge that the letter will be rushed and to suggest the candidate prioritise other letters or consider whether the late timing reflects a relationship that is less strong than the candidate believes. The how to decline guide covers the etiquette of saying no when the request comes too late.