SwipeHealthy Data
Clinical Years: MS3 & MS4
Third and fourth year rotation structures vary significantly across medical schools. Compare core requirements, elective flexibility, and hospital networks.
What are MS3 and MS4 rotations?
Third year (MS3) rotations form the core clinical curriculum — typically required rotations in internal medicine, surgery, obstetrics and gynecology, pediatrics, psychiatry, and family medicine. Fourth year (MS4) rotations are often more flexible, allowing students to pursue sub-internships, audition rotations, and electives in their chosen specialty.
The hospitals available for these rotations, and the structure of the curriculum, vary widely by school. Use the table below to compare, or browse individual school pages for full details.
99
Schools with rotation data
64
Affiliated teaching hospitals
20
Specialty tracks available
| School | MS3 Core Rotations | MS4 Electives | Hospital Network |
|---|---|---|---|
| Albert Einstein College of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Ambulatory Care (4 wks) | Sub-internship plus MS4 electives across the Montefiore system and affiliate sites. Global health and research tracks available. | 2 |
| Baylor College of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Family Medicine (4 wks) | MS4 sub-internship and electives across the Texas Medical Center. Pediatrics, cardiovascular, and oncology tracks are particularly strong. | 4 |
| Boston University Chobanian & Avedisian School of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Family Medicine (4 wks) | Sub-internship (4 wks required), followed by electives. Emphasis on primary care and urban health electives. Research and global health tracks available. | 2 |
| Brown University Warren Alpert Medical School | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Family Medicine (4 wks) | MS4 electives across the Lifespan and Care New England hospital systems. Combined degree and research pathways available. | 1 |
| Case Western Reserve University School of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Family Medicine (4 wks) | Flexible MS4 electives at both UH and Cleveland Clinic sites. Research pathway with protected time widely available. | 2 |
| Cleveland Clinic Lerner College of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Cardiology Selective (4 wks) | All electives within the Cleveland Clinic Health System. Sub-internships in cardiology, oncology, and surgical specialties are hallmark experiences. | 1 |
| Columbia University Vagelos College of Physicians and Surgeons | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Primary Care (4 wks) | MS4 electives span NYP/Columbia, Allen Hospital, and community sites. Research pathway available with optional 5th year. | 2 |
| Duke University School of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Ambulatory Care (4 wks) | Substantial protected research year. MS4 electives at Duke University Hospital, Duke Regional, and affiliate sites. | 1 |
| East Carolina University Brody School of Medicine | Standard core rotations | Electives | 0 |
| Eastern Virginia Medical School | Standard core rotations | Electives | 0 |
| Emory University School of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Family Medicine (4 wks) | MS4 sub-internships and electives across Emory, Grady, CHOA, and the Atlanta VA. Global health and CDC/public health tracks available. | 2 |
| Florida International University Herbert Wertheim College of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Family Medicine (6 wks) | Community-focused MS4 electives with emphasis on primary care, underserved medicine, and public health tracks. | 2 |
| Florida State University College of Medicine | Standard core rotations | Electives | 0 |
| George Washington University School of Medicine and Health Sciences | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Family Medicine (4 wks) | MS4 electives at GW Hospital and affiliated DC-area sites. Health policy, global health, and government/federal medicine tracks are distinctive offerings. | 1 |
| Georgetown University School of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Family Medicine (4 wks) | MS4 electives across the MedStar Health system including Washington Hospital Center, one of the busiest hospitals in the DC region. | 1 |
| Harvard Medical School | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Primary Care (6 wks) | Sub-internship (4 wks required), plus 28 weeks of electives across HMS-affiliated hospitals. Popular tracks: emergency medicine, radiology, anesthesiology, and research electives. | 4 |
| Howard University College of Medicine | Standard core rotations | Electives | 0 |
| Icahn School of Medicine at Mount Sinai | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Primary Care (4 wks) | MS4 electives across the Mount Sinai Health System including Elmhurst Hospital and Mount Sinai West. Research and FlexMed pathways available. | 1 |
| Indiana University School of Medicine | Standard core rotations | Electives | 0 |
| Johns Hopkins University School of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Emergency Medicine (4 wks) | 36 weeks of flexible electives. Strong research protected time. Sub-internships available in every specialty across Hopkins' hospital system. | 2 |
| Louisiana State University School of Medicine in New Orleans | Standard core rotations | Electives | 0 |
| Louisiana State University School of Medicine in Shreveport | Standard core rotations | Electives | 0 |
| Loyola University Chicago Stritch School of Medicine | Standard core rotations | Electives | 0 |
| Mayo Clinic Alix School of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Primary Care (4 wks) | All MS4 electives within Mayo Clinic. Sub-internships span every specialty. Research opportunities at all three Mayo campuses. | 1 |
| McGovern Medical School at UTHealth Houston | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Family Medicine (4 wks) | MS4 electives across Memorial Hermann and Harris Health System sites. High volume trauma, emergency medicine, and surgery electives. | 2 |
| Medical College of Georgia at Augusta University | Standard core rotations | Electives | 0 |
| Medical University of South Carolina College of Medicine | Standard core rotations | Electives | 0 |
| Meharry Medical College | Standard core rotations | Electives | 0 |
| Mercer University School of Medicine | Standard core rotations | Electives | 0 |
| Michigan State University College of Human Medicine | Standard core rotations | Electives | 0 |
| Michigan State University College of Osteopathic Medicine | Standard core rotations | Electives | 0 |
| Montefiore Einstein School of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Family Medicine (4 wks) | MS4 electives across Montefiore Medical Center campuses. Sub-internships in medicine, pediatrics, and surgery widely available. | 1 |
| Morehouse School of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Family Medicine (6 wks) | MS4 electives focused on primary care, community medicine, and public health. Research tracks in health disparities available. | 2 |
| Mount Sinai School of Medicine | Standard core rotations | Electives | 0 |
| NYU Grossman School of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Ambulatory Care (4 wks) | Sub-internship required in MS4. Electives available across NYU Langone's Manhattan and Brooklyn campuses plus affiliated community and VA sites. | 2 |
| New York Medical College | Standard core rotations | Electives | 0 |
| Northwestern University Feinberg School of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Primary Care (4 wks) | MS4 sub-internship plus electives at Northwestern Memorial, Prentice Women's, and Lurie Children's Hospital. | 2 |
| Nova Southeastern University Dr. Kiran C. Patel College of Allopathic Medicine | Standard core rotations | Electives | 0 |
| Ohio State University College of Medicine | Standard core rotations | Electives | 0 |
| Purdue University School of Medicine | Standard core rotations | Electives | 0 |
| Rush Medical College | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Family Medicine (4 wks) | MS4 electives at Rush University Medical Center and affiliate community sites. Sub-internships across major specialties. | 1 |
| SUNY Downstate Health Sciences University College of Medicine | Standard core rotations | Electives | 0 |
| SUNY Upstate Medical University | Standard core rotations | Electives | 0 |
| Saint Louis University School of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Family Medicine (4 wks) | MS4 electives across SSM Health and SLU-affiliated hospitals. Primary care, community health, and international medicine tracks available. | 1 |
| Southern Illinois University School of Medicine | Standard core rotations | Electives | 0 |
| Stanford School of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Primary Care (4 wks) | Flexible MS4 with research, innovation, and global health tracks. Students commonly pursue electives at affiliated VA, county, and international sites. | 2 |
| Stony Brook University Renaissance School of Medicine | Standard core rotations | Electives | 0 |
| Temple University Lewis Katz School of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Family Medicine (4 wks) | MS4 sub-internship and electives across the Temple University Health System and affiliated community sites. | 1 |
| Texas A&M College of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Family Medicine (6 wks) | Flexible MS4 electives across Texas A&M-affiliated hospitals. Community medicine and rural health tracks are available. | 0 |
| Texas Tech University Health Sciences Center School of Medicine | Standard core rotations | Electives | 0 |
| Thomas Jefferson University Sidney Kimmel Medical College | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Family Medicine (4 wks) | Electives across Jefferson Health System's many campuses. Sub-internships in most major specialties available. | 2 |
| Tufts University School of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Family Medicine (4 wks) | Required sub-internship plus 28 weeks of electives. Students may pursue rotations at Maine Medical Center and other affiliate sites for community medicine exposure. | 1 |
| Tulane University School of Medicine | Standard core rotations | Electives | 0 |
| UT Southwestern Medical Center | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Family Medicine (4 wks) | Flexible MS4 with electives at Parkland, Children's Medical Center Dallas, Zale Lipshy Pavilion, and VA North Texas. | 2 |
| Uniformed Services University of the Health Sciences F. Edward Hebert School of Medicine | Standard core rotations | Electives | 0 |
| University at Buffalo Jacobs School of Medicine and Biomedical Sciences | Standard core rotations | Electives | 0 |
| University of Alabama at Birmingham Marnix E. Heersink School of Medicine | Standard core rotations | Electives | 0 |
| University of Arizona College of Medicine - Phoenix | Standard core rotations | Electives | 0 |
| University of Arizona College of Medicine - Tucson | Standard core rotations | Electives | 0 |
| University of California, Los Angeles David Geffen School of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Family Medicine (4 wks) | Flexible elective curriculum. Sub-internships at UCLA, Cedars-Sinai, Harbor-UCLA, and community sites. Research and specialty tracks available. | 1 |
| University of California, San Diego School of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Family Medicine (4 wks) | Flexible MS4 electives at UCSD, VA, and affiliate sites. Research tracks and global health rotations at Tijuana partner hospitals available. | 1 |
| University of California, San Francisco School of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Family & Community Medicine (4 wks) | 36 weeks of electives with strong research integration. Sub-internships available across all UCSF hospitals. Pathway programs in global health, primary care, and physician-scientist tracks. | 3 |
| University of Central Florida College of Medicine | Standard core rotations | Electives | 0 |
| University of Chicago Pritzker School of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Primary Care (4 wks) | Highly flexible MS4 with generous elective time. Research pathway and dual-degree programs widely pursued. | 2 |
| University of Cincinnati College of Medicine | Standard core rotations | Electives | 0 |
| University of Colorado School of Medicine | Standard core rotations | Electives | 0 |
| University of Florida College of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Family Medicine (4 wks) | MS4 electives at UF Health Gainesville and Jacksonville campuses. Strong rural medicine and global health elective options. | 0 |
| University of Illinois College of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Family Medicine (4 wks) | MS4 electives available across all UIC campus sites. Community health, rural medicine, and research tracks widely offered. | 2 |
| University of Kansas School of Medicine | Standard core rotations | Electives | 0 |
| University of Kentucky College of Medicine | Standard core rotations | Electives | 0 |
| University of Louisville School of Medicine | Standard core rotations | Electives | 0 |
| University of Maryland School of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Family Medicine (4 wks) | Sub-internship plus electives across UMMC system. Trauma surgery and emergency medicine are particularly strong elective tracks. | 2 |
| University of Miami Miller School of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Family Medicine (4 wks) | MS4 electives at Jackson Memorial, UHealth, and Nicklaus Children's. Strong trauma and transplant surgery elective tracks. | 3 |
| University of Michigan Medical School | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Family Medicine (4 wks) | MS4 electives at Michigan Medicine main campus, VA Ann Arbor, and affiliate hospitals. Research, global health, and integrated specialty tracks available. | 1 |
| University of Minnesota Medical School | Standard core rotations | Electives | 0 |
| University of Mississippi School of Medicine | Standard core rotations | Electives | 0 |
| University of Missouri School of Medicine | Standard core rotations | Electives | 0 |
| University of New Mexico School of Medicine | Standard core rotations | Electives | 0 |
| University of North Carolina School of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Family Medicine (6 wks) | MS4 electives at UNC and affiliated community sites. Primary care and rural medicine tracks strongly supported. | 2 |
| University of Oklahoma College of Medicine | Standard core rotations | Electives | 0 |
| University of Pennsylvania Perelman School of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Primary Care (4 wks) | Flexible MS4 with electives at Penn Medicine and CHOP. Research pathway and dual degree options widely available. | 2 |
| University of Pittsburgh School of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Family Medicine (4 wks) | MS4 electives across the broad UPMC network. Transplantation, cardiothoracic surgery, and neurosciences are exceptional elective tracks. | 1 |
| University of Rochester School of Medicine and Dentistry | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Family Medicine (4 wks) | MS4 electives across UR Medicine, including Highland Hospital and F.F. Thompson Hospital for community medicine experience. | 1 |
| University of South Carolina School of Medicine Columbia | Standard core rotations | Electives | 0 |
| University of South Florida Morsani College of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Family Medicine (4 wks) | Flexible MS4 electives across USF Health affiliated sites. Research and global health tracks available. | 0 |
| University of Southern California Keck School of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Family Medicine (4 wks) | MS4 sub-internship followed by specialty electives. LAC+USC provides exceptional volume for emergency medicine, trauma, and surgery sub-internships. | 2 |
| University of Tennessee Health Science Center College of Medicine | Standard core rotations | Electives | 0 |
| University of Texas Health Science Center at San Antonio Joe R. and Teresa Lozano Long School of Medicine | Standard core rotations | Electives | 0 |
| University of Texas Medical Branch John Sealy School of Medicine | Standard core rotations | Electives | 0 |
| University of Toledo College of Medicine and Life Sciences | Standard core rotations | Electives | 0 |
| University of Utah Spencer Fox Eccles School of Medicine | Standard core rotations | Electives | 0 |
| University of Virginia School of Medicine | Standard core rotations | Electives | 0 |
| Vanderbilt University School of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Primary Care (4 wks) | Flexible MS4 electives at VUMC. Genomic medicine, biomedical informatics, and global health tracks are notable offerings. | 1 |
| Virginia Commonwealth University School of Medicine | Standard core rotations | Electives | 0 |
| Wake Forest University School of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Family Medicine (4 wks) | MS4 electives across the Atrium Health Wake Forest Baptist system. Oncology and cardiovascular sub-internships are particularly strong. | 0 |
| Washington University School of Medicine in St. Louis | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Primary Care (4 wks) | Flexible MS4 with strong research year integration. Electives at Barnes-Jewish, Siteman Cancer Center, and St. Louis Children's. | 2 |
| Wayne State University School of Medicine | Standard core rotations | Electives | 0 |
| Weill Cornell Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Primary Care (4 wks) | Flexible electives at NYP/Weill Cornell and affiliate sites. Global health rotations in Tanzania and Qatar available. | 1 |
| Yale School of Medicine | Internal Medicine (12 wks), Surgery (8 wks), OB/GYN (6 wks), Pediatrics (6 wks), Psychiatry (6 wks), Neurology (4 wks), Primary Care (4 wks) | Flexible MS4 with generous elective time. Thesis project required. Global health, primary care, and research tracks are well-established. | 1 |
Match with the right rotation
Ready to find your perfect clinical rotation match? SwipeHealthy connects medical students with clinical rotations — swipe to find your fit.