Letters of recommendation are among the most powerful and underutilized components of a medical school application. Funnily enough, I think this was actually the most stressful part of the medical school application process for me aside from the MCAT, because I didn't necessarily have all my letter writers (at least not strong ones) in place by second semester of senior year. So, we'll be discussing some of the basics that you should know preferably before senior year as you consider who to ask and how to know what a strong letter is.
What Makes a Strong Medical School Letter of Recommendation?
A powerful letter will have a few key attributes. First, it should give insight into your personality. For example, a strong letter might show how you think and problem-solve, how you interact with patients and peers, how you handle challenges, and how you’ve grown over time. The strongest letters include specific stories and examples to support these compliments. Medical schools look for evidence of reliability and responsibility, empathy and compassion, communication and teamwork, professionalism, resilience, and intellectual curiosity. If you want a comprehensive list of attributes or have the luxury of guiding the content in your letter, check out the AAMC core competencies page for the key words that medical school admissions committees want to see. If your recommender cannot speak to at least a couple of these areas, they may not be the best choice.
Second, prestige does not outweigh familiarity and the depth of description I mention above. I observe applicants placing undue weight on the letter writer's title rather than the substance of the letter. I fell into this trap myself, and asked a physician who was the medical director of the emergency department I worked in for a letter, even though I had only worked with him four or five times. If I could go back, I'd probably do it differently. A meaningful letter from someone who supervised and mentored you closely is stronger than one from a professor who barely remembers you, a physician you shadowed briefly, or a big-name researcher with no personal insight. I will mention one exception to this rule: if the letter writer comes from an institution you care deeply about attending, it may be worth extending even if the letter is not top-tier. For example, if your top choice medical school is your undergraduate institution, a letter from someone on the faculty at that medical school might actually move the needle, particularly if they are in contact with the admissions committee.
Finally, the third thing I look for is objective wording (if possible). For example: “Among the hundreds of premedical students I’ve taught, she is in the top 5% academically, and demonstrated standout professionalism and maturity.” Statements like this make you stand out because they are strongly worded. Superlative adjectives (ex: strongest, best, most ___) are particularly helpful. Admissions committees can easily recognize lukewarm letters that lack enthusiasm and superlatives.
What are the Letter or Recommendation Requirements?
I'd also never miss the requirements for letters of recommendation, so you can plan in advance. In general, you want a certain distribution of letter writers and a certain quantity as well. Many undergraduate programs use letter packets or committee letters. In that case, you should reach out to your pre-med advisor for logistics related to this, but in general:
MD Programs (AMCAS)
Most MD schools require two science faculty letters ( Biology, Chemistry, Physics, or Math) and one non-science faculty letter. This should be your foundation. AMCAS allows up to 10 letters, but in my experience, most successful applicants should submit four to six strong letters. More is not always more. Review the MSAR requirements for each school, and you’ll find that the minimum is typically three, and the maximum is anywhere from 5-7. I think 4 letters is the sweet spot. Quality beets quantity every time.
DO Programs (AACOMAS)
Most DO schools require one to two science faculty letters and one physician letter, preferably from a DO. Some schools accept an MD physician letter, but a DO letter is safer because it shows more genuine interest in osteopathic medicine.
Texas Medical Schools (TMDSAS)
Most Texas schools prefer three faculty letters or a committee letter, and many Texas programs also value a physician letter.
Final Takeaways
Strong letters are detailed, personal, enthusiastic, and competency-based. You should choose recommenders who truly know you and avoid generic or lukewarm letters. MD programs generally want three strong academic letters. DO programs strongly prefer a physician letter, ideally from a DO. Most competitive applicants submit four to five letters. When planned correctly, your letters of recommendation can become one of the strongest parts of your medical school application, rather than an afterthought. Remember, look for superlative adjectives and letter writers who can give examples to back up the praise they will give you.
