Asking for a US Clinical Letter as an IMG
How an IMG asks a US attending for a residency letter after an observership or rotation: timing, what the writer can attest to, a constructed ask email.
Asking for a US Clinical Letter as an IMG
Ask in your last week of the observership or rotation, in person first and by email the same day, and ask the attending who watched you work most, not the most senior name you met. Family medicine's program directors put it plainly: the Association of Family Medicine Residency Directors "encourages applicants who are IMGs submit at least one letter from a physician who practices in the United States."
That letter has a limit. An observer cannot examine or treat patients, so an honest observership letter describes what the writer saw you do: how you reasoned on rounds, how you presented a case at conference, how you worked with the team. Ask the person who saw the most of that, and hand them the facts on one page. This page covers the applicant's side of the ask; the USCE letter of recommendation page for US physicians covers the writer's side. Both sit in our medical school and residency essays hub.
Every program page and guide quoted below was checked on November 7, 2026.
What programs say about letters for IMGs
Letter rules from one specialty guide and three internal medicine programs:
| Source | Letters asked for | What it means for your US letter |
|---|---|---|
| Family Medicine, Program Director Associations Guide 2026–2027 | "At least 2, No more than 4"; "When possible, at least one should be authored by a family physician" | IMGs: "at least one letter from a physician who practices in the United States." Timing: "Final letters should be submitted by time of interview." |
| Yale Internal Medicine, categorical track | "A minimum of three (3) Letters of Recommendation (NOTE: One LOR should be submitted from the applicant's Department of Medicine Chair)" | The chair letter comes from your home school; the US letter fills another slot |
| Yale Internal Medicine, general preliminary track (same page) | "at least one letter from an attending who supervised the student on an inpatient internal medicine experience such as a clerkship, sub-internship, consultation service, or ICU rotation" | A supervised inpatient experience, not an observership |
| University of Missouri Internal Medicine | "Chair’s Letter and at least two additional letters of recommendation (Dean’s Letter not included)" | The US letter is one of the two additional letters |
| UTHealth Houston Internal Medicine | "Letter from your Department Chairman or designate (Vice-Chair for Education or the Clerkship Director letter is acceptable)" plus "2 additional Letters of Recommendation" | Same: the US letter sits beside the chair letter, not in place of it |
Our view: for an IMG applying in internal medicine, a US letter is one of the "additional" letters, so it never replaces the chair letter these programs name. In family medicine, AFMRD encourages at least one US letter and the guide prefers a family physician writer, so a US family physician covers both at once. The countercase: if your only US experience is a two-week observership with one brief contact, a thin US letter can read weaker than a detailed home-country letter from a supervisor who managed patients with you. Use it only if the writer can describe specific moments.
What an observership letter can say, and what it can't
The hospital sets the limit. West Virginia University's observer guideline says observers "MAY NOT provide medical care, conduct patient interviews, conduct a medical history, examine a patient, provide medical advice to a patient, or assist in any procedure" (WVU guideline, revised December 20, 2023). The AMA's IMG section says "Given the limited nature of an observership, participants may be unable to perform clinical care" (AMA, Finding an observership FAQs). And some programs do not count the experience at all: Yale says "Observerships or externships without direct clinical responsibility for patients do not meet these criteria."
So the letter has to match your role. That also protects you: the 2027 NRMP Match Participation Agreement, section 6.3, says "Applicants are responsible for ensuring the completeness, timeliness, and accuracy of all information provided to programs" and "Applicants who submit incomplete, misleading, false, or plagiarized information may be deemed to have violated this Agreement." A letter that says you "managed patients" while your Experiences entry says "observership" puts two documents in your file in conflict.
What each kind of US experience lets a writer describe (our summary, built on the rules above):
| You did | The writer can describe | The writer cannot describe |
|---|---|---|
| An observership | Your answers when questioned on rounds, a case you presented at conference or teaching sessions, your preparation, your English with the team, punctuality and professionalism | Histories, exams, notes, procedures or plans you carried out |
| A hands-on rotation or externship with patient responsibility | All of the above, plus patients you saw, presentations of your own patients, notes and plans the writer reviewed | Work done when the writer was not there |
When to ask: the last week, not after Match Week
Ask while the attending still remembers specific days. Our recommendation is the last week of the experience, in person, followed by an email the same day with your one-page summary. Waiting until you are back home, or until after Match Week, turns the letter into a favour for someone the writer barely recalls.
Then work back from the deadline you actually face. The family medicine guide says "Final letters should be submitted by time of interview" and gives a "Typical interview offer window" of "October 2026 - January 2027" for this cycle. If you are applying in the 2027 Match and the letter arrives after your application went out, the same guide says "Applicants may wish to notify programs of major updates to their application materials" and that "the Family Medicine program may not respond"; the IMG update email page covers that note. How writers upload and how you assign letters to programs is on our ERAS letters of recommendation guide.
Constructed example: the weak ask
Constructed example, written by us, not a real applicant's email. Context (invented): Dr. Imran Sheikh, MBBS 2024, finishing a four-week internal medicine observership.
Subject: LOR request
Respected Sir, kindly write a strong LOR for me for residency. I have attached my CV. Please mention that I have good clinical skills and was like a resident in the team. Kindly do the needful.
It asks the writer to claim "clinical skills" and resident-level work that an observer cannot show, gives no dates, and gives the writer nothing to write from.
Constructed example: the revised ask
Constructed example, written by us, not a real applicant's email. Same invented applicant, sent the afternoon after asking in person.
Subject: Residency letter: Imran Sheikh, observer on 5 North, March 2027
Dear Dr. Pemberton,
Thank you for agreeing this morning to consider writing me a residency letter. I observed on your inpatient medicine team from March 1 to March 26, 2027.
I have attached a one-page summary of the cases you discussed with me and my CV. I am applying to internal medicine and family medicine residency programs, and I would be grateful for a letter that describes what you saw during my observership.
If it suits you, the letter would be needed by September 1, 2027. I will send the ERAS letter request as soon as I create it.
With thanks, Imran Sheikh, MBBS
That is 96 words across the three body paragraphs. It names the dates, the specialties and the deadline, and it asks for a letter about "what you saw", which keeps the letter inside the observer role.
Constructed example: the one-page summary for your writer
Constructed example, written by us, not a real applicant document. Same invented applicant.
Imran Sheikh, MBBS (2024). Observer, inpatient medicine, 5 North, March 1–26, 2027
- Applying to: internal medicine and family medicine residency, 2028 Match.
- Rounds, March 4: you asked me the differential for hyponatremia in the patient in bed 12; I gave four causes and the next test.
- Noon conference, March 18: I presented a 10-minute case on dengue fluid management from my house-job work in Karachi.
- Teaching session, March 22: I answered the resident's questions on insulin dosing at discharge.
- Home-country work: house officer, medical ward, Karachi, July 2024 to January 2027 (admissions, rounds, discharge planning).
- USMLE Step 1 and Step 2 CK passed.
- Letter needed by: September 1, 2027.
Every line is a date and a moment the attending was present for. Nothing on it claims patient care the observer did not do.
If the attending asks you to draft the letter
Say no and send the summary instead. A letter is the writer's statement, and section 6.3 of the NRMP agreement names "plagiarized information" alongside false information. GradPilot's letter reviews aren't for a letter you drafted for a recommender to submit as their own. The guide to being asked to write your own letter of recommendation has replies you can use.
Reapplying: which letters to replace
Our recommendation: when you reapply, at least one letter should come from your newest US experience, and a letter written before that experience should go first if you are over a program's limit (the family medicine guide caps it at "No more than 4"). A new letter is one of the few documents that shows what changed since your last application, in someone else's words. The countercase: keep an older letter if its writer supervised you in hands-on patient care and nothing newer comes close. A recent observership letter does not outrank an older letter from a supervising physician.
US letter checklist for IMGs
- List your target programs' letter rules (chair letter, number, specialty writer) from each program page.
- Pick the writer who saw you most, not the most senior name.
- Ask in person in your last week, then email the same day.
- Attach a one-page summary of dated moments the writer saw, plus your CV.
- Ask for a letter about what the writer saw; never ask them to describe clinical work you did not do.
- Give the real deadline: for family medicine, letters are expected by the time of interview.
- If the letter arrives after you applied, send a short update only where the program accepts updates.
Questions about asking for a US clinical letter
Can an attending from an observership write my residency letter?
Yes, if they agree, and the letter describes what they observed. Yale's page shows the limit: observerships "without direct clinical responsibility for patients" do not count as its clinical experience, so the letter should not present the observership as more than it was.
How many US letters do I need as an IMG?
It depends on the program and specialty. The family medicine guide asks IMGs for "at least one letter from a physician who practices in the United States"; the internal medicine programs above ask for a chair letter plus two or more others and name no US-letter count.
When is it too late to ask?
For family medicine, "Final letters should be submitted by time of interview." For other specialties, check the program's page and your specialty's guide.
Should I write the letter if my attending is busy?
No. Give the writer a summary of facts, not a draft. Section 6.3 of the NRMP agreement names "plagiarized information".
Review the writing you send next
Send your letter writer the public residency letter of recommendation rubric: it reads whether a letter establishes how the writer knows the candidate and keeps every claim inside what the writer saw, and the writer can run their own draft through a free Quick Review against it. Your own next document is the Experiences entry for the same rotation: Get a free Quick Review of your activity descriptions against GradPilot's ERAS experiences rubric.
More IMG residency guides:
- Observership request email for IMGs: who to email and a constructed template.
- ERAS Experiences for IMGs: how to label an observership and a house job.
- Research year or observership after not matching: which year gives a US physician more to write about.
- USCE letter of recommendation for IMGs: the writer's side of the same letter.
Sources
Retrieved November 7, 2026, except where noted.
- Organization of Program Director Associations, AAMC and AMA, Program Director Associations Guide for Residency Applicants: Family Medicine (2026–2027 cycle): letter count, family-physician writer, IMG US-letter guidance, final letters by interview, interview window, update notices.
- Yale School of Medicine, Internal Medicine IMG applicant requirements (no year stated): categorical and preliminary letter rules; observerships do not meet the clinical-experience requirement.
- University of Missouri School of Medicine, Internal Medicine residency: how to apply (no year stated): chair letter plus two additional letters.
- UTHealth Houston McGovern Medical School, Internal Medicine: how to apply (2026-2027 interview season): minimum letter requirements.
- National Resident Matching Program, 2027 Match Participation Agreement for Applicants (2027 Main Residency Match and SOAP), section 6.3: accuracy of information and plagiarized information.
- West Virginia University Office of Graduate Medical Education, Guideline on Visiting IMG Observerships (revised December 20, 2023): what observers may not do.
- American Medical Association IMG Section, Finding an observership FAQs (no year stated): observers may be unable to perform clinical care.
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