Medical Schools Recommendation Letter Requirements

How letters of recommendation generally work for medical schools

Most U.S. medical schools ask for at least 3 letters: either a pre-health Committee Letter / Committee Packet, or an individual letter set that usually includes 2 letters from science (BCPM) faculty and 1 from a non-science professor. Some schools accept a Committee Letter in place of individual academic letters, and a few request extra letters such as a physician or research mentor letter.

Submission is typically handled through AMCAS Letters Service (or the relevant centralized service such as AACOMAS or TMDSAS). Strong recommenders are usually a pre-health committee or advisor, science (biology, chemistry, physics, math) faculty who taught the applicant in a graded course, a research principal investigator, and/or a physician who supervised clinical shadowing or work.

Across the 30 medical schools covered here, the letter process is more standardized than most applicants expect, because almost every school routes letters through the same AMCAS Letters Service. The real variation is in two places: whether a school accepts (or requires) a premedical Committee Letter in place of individual letters, and whether the school sets a hard minimum/maximum letter count. Harvard and Johns Hopkins both let a Committee Letter count as a single letter toward a numeric maximum, while Stanford does not use a committee process at all and instead asks for three to six individual letters directly.

A second source of variation is how strictly a school enforces the '2 science + 1 non-science' pattern. Several schools, including Johns Hopkins, spell this out explicitly as a minimum if no committee letter is available. Others are less prescriptive and instead describe the kinds of qualities — clinical exposure, research ability, maturity — they want the letters to demonstrate, without dictating exactly which courses the writers must have taught.

Because MD-PhD applicants are evaluated differently at many schools, always check whether the program expects extra research-supervisor letters beyond the standard MD requirement — this is common enough that it is worth confirming even when a school's general MD page does not mention it.