Be a leader in the clinical practice of endocrinology, endocrine surgery, and laparoscopic surgery.

Cleveland Clinic's Fellowship Training Program in the Endocrinology & Metabolism Institute is designed to provide you with:

  • Excellent training in the clinical and surgical practice of all endocrinology disorders, diabetes, endocrine surgery, and metabolic disorders.
  • The opportunity to work with experienced investigators on basic or clinical research projects.

Cleveland Clinic is ranked as one of the nation's top hospitals by U.S. News & World Report.

The high volume and complexity of cases in our Institute provide fellows with an optimal environment to gain the highest level of training and expertise. The skills and abilities gained through this program will provide a solid foundation to excel as leaders in the practice of endocrinology.

Available Fellowship Programs


Welcome to the Endocrinology Fellowship Training Program at Cleveland Clinic

Our program offers exposure to a diverse patient population affected by endocrine disorders and is designed to deliver well-rounded clinical and research training to prepare fellows for the extent and complexity of clinical practice of this wonderful sub-specialty. It exposes fellows to a broad spectrum of Endocrine disorders of the thyroid, lipid and bone metabolism, reproductive and neuroendocrinology, pituitary and adrenal disorders, diabetes mellitus and obesity.

Cleveland Clinic's forty staff endocrinologists, serve as teachers and mentors. Their various backgrounds result in an exceptional depth and breadth of clinical expertise and research opportunities for our fellows who are fully integrated into all aspects of our academically-diverse program.

The goal of this two-year training program is for fellows to acquire the knowledge and skills necessary for providing ethical, humanistic, cost-effective care for patients with endocrine disorders in both the inpatient and ambulatory settings.

The Endocrinology Fellowship Training Program accepts three applicants per year and sponsors J1 and H1b visas.

In order to comply with the requirements for sub-specialty board certification in endocrinology, metabolism, and diabetes by the American Board of Internal Medicine, applicants must successfully complete three years of residency training in Internal Medicine before entering the fellowship.

Program Director: Christian Nasr, MD
Associate Program Directors: Divya Yogi-Morren, MD and Sangeeta Kashyap, MD

Application and Contact Information

For any questions regarding Endocrinology and Metabolism Institute fellowship programs, please contact Joni Scott at 216.445.9096 or [email protected].

How to Apply for a Cleveland Clinic Fellowship Position in Endocrinology

The Association of American Medical Colleges (AAMC) developed ERAS (The Electronic Residency Application Service), to transmit fellowship applications, letters of recommendation, transcripts, and other supporting credentials from applicants and ERAS Fellowships Document Office (EFDO) to fellowship program directors using the Internet. We only accept applications that have been submitted through ERAS. Please do not send any application material via fax, mail or email, as it will not be included in your application.

The deadline for submitting a complete application is July 31, 2020. Failure to submit your completed application by this deadline may impact your application review. Applicants selected for an interview will be notified via email. Interviews will be scheduled for October 7 and 14, 2020. A completed application must include the following:

  • Application
  • Picture (not required, but appreciated)
  • CV
  • Personal statement
  • Three (3) Letters of Recommendation, including one from your program director
  • Dean's Letter – MSPE
  • Medical School Transcript
  • USMLE Transcript for MD and COMLEX for DO
  • ECFMG Report (if applicable)

Foreign medical graduates will need to have completed a US-based residency program in Internal Medicine prior to joining the fellowship program. Fellowship period begins July 1, 2021.

How does ERAS Fellowship application work?

The ERAS application is made up of three components:

  1. The applicant website MyERAS
  2. The Dean's Office Workstation (DWS) used by EFDO
  3. The Program Director's Workstation (PDWS)

Using a web browser, applicants complete an application, select programs, and create and assign supporting documents using a secure site. Applicants submit these files to ERAS for processing.

The ERAS Fellowships Document Office (EFDO) staff uses the DWS to scan and store the applicant's medical school transcripts, letters of recommendation, and photograph to transmit these files to the ERAS Post Office. Cleveland Clinic will connect to the ERAS Post Office and download applications using the Program Director's Workstation (PDWS).

When can an applicant get started?

  • On June 11, 2020, applicants receive ERAS token
  • On July 1, 2020 ERAS is open for applicants to start uploading their documents
  • On July 15, 2020 applicants begin applying to July cycle ACGME fellowship programs and fellowship programs start receiving applications

Program Structure

The duration of the fellowship is 2 years. The typical schedule is a combination of 13 modules per year. Each module is 4 weeks long.

First year fellow:

  • 16 weeks of in-patient or consult service, designed in either 2-or 4- week blocks. Note: 1st year fellows will not be assigned to this service until after the completion of the Internal Medicine Board Exam
  • 2 weeks of elective
  • 30 weeks of Continuity Clinic, Research, and Specialty Rotations (3 half days of each per week) including 8 weeks at the Stephanie Tubbs Jones clinic
  • 1-3 Procedure weeks
  • 3 weeks (15 days) of vacation time

Second year fellow:

  • 8 to 10 weeks of in-patient or consult service, designed in either 2-or 4- week blocks
  • 6 weeks of elective
  • 25-30 weeks of Continuity Clinic, Research, and Specialty (3 half days of each per week) including 8 weeks at the Stephanie Tubbs Jones clinic
  • 8-10 Procedure weeks
  • 3 weeks (15 days) of vacation time


In-Patient rotation

Hospital consult service rotation: This rotation takes place at Cleveland Clinic Main Campus. The endocrinology hospital consult service involves extensive inpatient exposure to the full spectrum of problems in endocrinology and metabolism including disorders of the thyroid, adrenal, hypothalamus, pituitary, parathyroid glands, endocrine hypertension, metabolic bone and calcium disorders, and type 1 and 2 diabetes mellitus. The educational purpose of this rotation is for the fellow to:

  1. Gain experience and achieve competency in the care of in-hospital endocrine disorders.
  2. Gain experience and achieve competency in the treatment and management of acute and chronic endocrine disorders in the hospital setting.
  3. Perform in a leadership role in organizing the team, receiving consultations, distributing consultations to other team members and supervising students and residents on the service.

During the rotation, fellows are expected to work with an assigned staff endocrinologist and other team members including residents, medical students and/or nurse practitioners. The fellow receives consultations, distributes them to team members, maintains list of active consultations, and ensures appropriate hand-over of cases. We work closely with our Diabetes Care Team which is our nurse practitioner team for inpatient diabetes consults. Some examples of consults: diabetes (post-op, transplant, TPN/enteral feeds, islet transplant, post-bypass surgery, insulin pumps); thyroid function abnormalities (thyroid storm, myxedema coma, amiodarone induced thyroiditis…); diabetes insipidus; hyper and hypocalcemia; pheochromocytoma; carcinoid/neuroendocrine; Cushing’s syndrome; adrenal insufficiency; hypoglycemia. The fellow is responsible for the initial evaluation of the patient and development of an initial management plan. The H&P are presented to the attending staff and feedback is provided to the fellow. The fellow also initially supervises the H&P of the students and residents and does rounds on a daily basis to follow his/her patients. Patient census is usually about 15-25 patients. The hospital fellow takes overnight call from home 3 nights per week while on the hospital rotation. Attending core curriculum lectures and journal club meetings are mandatory for all fellows and fellows are allowed protected time to attend lectures/didactics even when on Hospital Service. Fellows have one weekend day off per week while on hospital service.

Ambulatory Rotations

  • Continuity clinics: all the continuity clinics take place at Cleveland Clinic Main Campus. Fellows work with an assigned precepting physician in three half-day blocks per week when not on hospital service. The fellow is responsible for the initial evaluation of the patient and the development of the management plan. The HPI is then presented to the precepting physician and feedback is provided to the fellow. All fellows have their endocrine continuity clinic spanning over the two years of fellowship training. This ensures them the opportunity to follow patients long enough to witness the natural history of the endocrine disorder and its therapy unfold. There is a combination of new patients and follow-up visits. New visits are allocated 60 minutes and follow up visits are 30 minutes. The clinic half-day is scheduled for 4 hours. There is no weekday night call coverage during this rotation. The fellow is responsible for following up on results and phone encounters generated after these visits. This allows for fellow autonomy and accountability.
  • Back-up rotation: fellows attend four half-day morning continuity clinics per week and are the dedicated “back-up” person for the hospital service fellow if help is needed.
  • Sub-specialty rotations: the program emphasis is on ambulatory sub-specialty training which reflects the fact that most of the contemporary practice of endocrinology and metabolism occurs in the outpatient setting. During the outpatient rotations, fellows rotate in three half-day blocks per week through all sub-specialty teaching clinics (including thyroid, pituitary, adrenal, weight management, calcium, gestational diabetes and more) where they focus on pragmatic and scholarly approaches to diagnostic and therapeutic endocrinology. In all rotations, fellows primarily see new consultations, working one-on-one with a staff endocrinologist who is an expert in that sub-specialty.
  • Procedure week: fellows are also trained in ultrasonography of the thyroid, the post-surgical thyroid bed, cervical lymph node mapping and performing fine needle aspiration. To ensure that all the fellows receive adequate training, a fellow is dedicated to perform all the necessary procedures under direct supervision by an experienced faculty member. By the end of their training, most fellows-in-training would have completed above 100 ultrasounds of the thyroid and thyroid bed, and performed about 50 FNAs of thyroid nodules and cervical nodes/masses.
  • Stephanie Tubbs Jones Rotation: STJ rotation for short. This is a one-week rotation. Monday mornings are dedicated to the gestational thyroid and diabetes clinic. Wednesday and Thursday afternoons are dedicated to seeing patients at STJ with one of our faculty which is an outpatient clinic. This is an excellent opportunity to learn bread and butter endocrinology.
  • Electives: some electives fellows are able/encouraged to choose from are: pediatric endocrinology, nuclear medicine, lipid clinic in preventive cardiology, laboratory medicine, pathology, transgender clinic, reproductive endocrinology, PCOS/women’s health, obesity/medical weight management, and endocrine surgery. 

Educational Activities

There are several regularly scheduled educational activities in the department for fellows:

  • Core curriculum lectures
  • Case presentations
  • Endocrine grand rounds
  • Monthly pituitary tumor board
  • Monthly adrenal/Neuroendocrine tumor board
  • Monthly thyroid tumor board
  • Monthly calcium tumor board
  • ESAP sessions
  • Wednesday didactic sessions
  • Major journal club
  • Minor journal club
  • Research meeting

Weekly Endocrine Grand Rounds

The Friday Endocrine Grand Rounds is attended by faculty, fellows, providers from other specialties, house staff, and students. The topics discussed at this conference are clinically relevant, but may include newer developments in the basic sciences which are of increasing importance to a clinician. The fellows have an opportunity to present interesting cases they have seen and discuss a related area of diagnosis or therapy. Research protocols and results are discussed as well.

Journal Club

Journal Club follows Endocrine Grand Rounds every Friday. Each week, fellows gather to discuss a group of recent articles they believe are of relevance. Often, this conference allows the opportunity to compare the content of the literature with "what we really do." The focus is very clinical and the goal is to stay up-to-date on a broad range of topics. Fellows often cover articles in depth. A core curriculum lecture is given by a faculty member following EGR.

Research Seminar

The Friday morning Research Conference covers new research by fellows at Cleveland Clinic. Members of the Endocrine Metabolism Institute and visiting scientists present both work that is in progress and new developments. The emphasis is on high-quality, cutting-edge science. Fellows are also expected to participate in a bi-weekly thyroid conference, an obesity journal club every other month, an annual Endocrine Board Review Course at Cleveland Clinic and annual Diabetes Day. All fellows present at National Endocrine Conferences.

Didactic Lectures

These lectures are part of the Wednesday morning conference series. Lectures are given by endocrine faculty and/or invited speakers. Additional lecture topics will be added as deemed appropriate by the faculty. Examples of such topics are:

  • Insulin: synthesis, regulation, and molecular mechanism of action
  • Developmental endocrinology (growth and development, sexual differentiation, pubertal maturation)
  • Genetics (selected endocrine disorders)
  • Principles of hormone action and signal transduction pathways
  • Creation, validation, and use of laboratory assays
  • Immunology of endocrine disorders
  • Pathogenesis of diabetes mellitus and insulin resistance
  • Pancreas transplantation
  • Non-genomic actions of steroid hormones
  • Radionuclide scanning and Radiation Safety
  • Thyroid ultrasound day
  • Reproductive endocrinology
  • Transgender medicine
  • Pregnancy and endocrine disorders
  • Obesity medicine
  • Pituitary disorders (pituitary adenomas, interpreting pituitary MRI)
  • Dynamic endocrine testing
  • Adrenal disorders (primary hyperaldosteronism, adrenal Cushing’s, adrenal nodules)
  • Neuroendocrine disorders
  • Financial planning
  • Billing and coding

Annual Endocrinology Board Review Course

The American Association of Clinical Endocrinology/Cleveland Clinic Endocrinology Board Review Course is directed to practicing endocrinologists and other physicians with an interest in endocrinology, metabolism and diabetes. The goal of this course is to provide the participants an intensive preparation for the endocrinology and metabolism board examination. Topics covered during Endocrine Board Review Course are:

  • Endocrinology, including diabetes control and complications
  • Nuclear imaging
  • Thyroid disorders
  • Endocrine pathology
  • Hypo- and hyperadrenalism
  • Endocrine hypertension
  • Osteoporosis
  • Nephrolithiasis
  • Hypogonadism
  • Calcium disorders
  • Transplantation
  • Pituitary disorders
  • Important pediatric endocrine disorders and pregnancy
  • Genetics

The lecture format will be heavily weighted to board simulation. An interactive Audience Response System is employed to facilitate audience participation. A comprehensive syllabus will be provided. All fellows in training are given the opportunity to attend.

Annual Diabetes Day

A course designed to summarize and present the latest knowledge in the management of diabetes to busy practitioners. Areas recently covered during Diabetes Day conference include:

  • Combination therapy
  • Treatment in hospital setting
  • Management and prevention of complications
  • Peculiarities in minority ethnic groups and adolescents
  • Newer as well as future management options

Pituitary Day

This is a one day symposium with a different theme each year that provides an overview of innovations and advances in the field of pituitary disease including evaluation, diagnosis, treatment and prevention. It includes didactics and case-based talks and panel discussions by experts in the field. 

Thyroid Day

This is a one-day course presented by the Cleveland Clinic Endocrinology and Metabolism Institute that provides up-to-date reviews in the management of thyroid diseases. It includes didactics and case-based talks and panel discussions by experts in the field. 

Research Training

Research is a significant part of the training of an endocrinologist. Endocrine fellows are given research opportunities and responsibilities.

Each trainee meets with the program director, associate program directors and our research director during his or her first year to discuss research opportunities and is assigned an appropriate mentor. The research experience is expected to occupy 30% of the fellow's time during the first year and 35% during the second year. Our fellows are provided the time and support needed to complete projects and the expectation is that the experience will lead to authorship of a publication or presentation at a national meeting. All endocrinology fellows are required to take the Investigator Human Subject Research Education course offered by Cleveland Clinic in addition to CITI and HIPAA, online education courses.

There is a seven-bed, NIH-supported, Adult General Clinical Research Center (GCRC) located in the Cleveland Clinic hospital. Additionally, out-patient beds are available for GCRC studies. Many inpatient clinical research studies are performed by Division members on the GCRC.

Meet Our Staff

Our faculty has wide ranging research interests that cross the entire spectrum of endocrinology. Details of their academic and clinical interests can be found by clicking on the faculty member's name for more information.

Teaching opportunities

Our fellows are frequently involved in teaching residents, medical students and rotators. In addition to teaching rotators on the hospital service and giving scheduled lectures to the internal medicine residents, endocrine fellows are expected to give resident didactics every other Thursday while on the STJ rotation. Furthermore, there are several teaching opportunities through GME whereby fellows can become clinical instructors for the Cleveland Clinic Lerner College of Medicine (CCLCM), among other educational programs.

Fellows who are interested in cultivating a career as a Clinician Educator can enroll in the Education Track for the Cleveland Clinic Endocrinology Fellowship program. This program assists fellows interested in a career focused on medical education to develop excellence in teaching in keeping with one of the core values of the Cleveland Clinic which is the further education of those who serve. 


  1. Training in the science and principles of medical education
  2. Development of effective didactic and clinical teaching skills
  3. Development of skills in developing and implementing curriculum and methods of assessment
  4. Facilitate scholarship in medication education
  5. To provide opportunities for mentorship with staff who have developed their careers within medical education

Meet Our Fellows

Lauren Buehler

  • Medical School: Emory School of Medicine, Atlanta, GA
  • Residency: Cleveland Clinic Foundation, Cleveland Clinic, OH
  • Second-year fellow 

Alexandra Mikhael

  • Medical School: American University of Beirut, Beirut, Lebanon
  • Residency: Cleveland Clinic Foundation, Cleveland Clinic, OH
  • Second-year fellow

Zehra Tekin

  • Medical School: Hacettepe University Medical School, Turkey
  • Residency: Icahn School of Medicine at Mount Sinai (NYC Health and Hospitals/Queens) Program
  • Second-year fellow

David Broome

  • Medical School: Wayne State University School of Medicine, Detroit, MI
  • Residency: Cleveland Clinic Foundation, Cleveland Clinic, OH
  • First-year fellow

Nabil Madhun

  • Medical School: Midwestern University, Chicago, IL
  • Residency: Cleveland Clinic Foundation, Cleveland Clinic, OH
  • First-year fellow

Yumiko Tsushima

  • Medical School: Shiga University of Medical Science (Japan)
  • Residency: Icahn School of Medicine at Mount Sinai Beth Israel
  • First-year fellow