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 you for the extent and complexity of clinical practice of this sub-specialty. It exposes fellows to a broad spectrum of disorders of the thyroid, lipid and bone metabolism, reproductive and neuroendocrinology, diabetes mellitus, and obesity.

Cleveland Clinic's twenty-seven 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 of patients with endocrine disorders in 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 Director, Leann Olansky, MD

Application and Contact Information

For any questions regarding Endocrinology and Metabolism Institute fellowship programs, please contact Nada Johnson at 216.445.9863 or

Endocrine Surgery

The Department of General Surgery offers an endocrine surgery fellowship of one year in length under the leadership of Allan Siperstein, MD, Surgery Institute Chairman. Applicants must have completed a general surgery residency and be board eligible or board certified in general surgery as determined by the American Board of Surgery. The fellow, in conjunction with the general surgery residents, will be primarily responsible for the care of all endocrine surgery patients on the service. This will include initial evaluation of patients, preparation for proposed procedure, conducting the procedure in a supervised fashion, and following the patient afterward.

As mastery is demonstrated, the fellow will help teach these procedures to the resident staff. It is anticipated that the fellow will participate in over 200 cases. There is a special emphasis on complex thyroid cancers, reoperative parathyroid surgery, familial endocrine syndromes, laparoscopic adrenal and pancreatic surgery and thermal ablation of hepatic metastases from endocrine tumors. This unique position will afford a fellow a large surgical experience of complex cases providing an excellent opportunity for a final career in endocrine surgery.

In addition to clinical responsibilities the fellow will also support research initiatives covering both clinical trials and basic science work including the development of novel endocrine techniques in the animal laboratory. Participation will include involvement in ongoing studies as well as establishing original research protocols. The fellow will present the results of these studies at national meetings and submit manuscripts to peer reviewed journals. This fellowship is offered through the American Association of Endocrine Surgery match process. Applications should submit a CV with ABSITE scores and two letters of recommendation to Allan Siperstein MD, Interviews occur through the spring and summer with the match usually held in early September. Additional program and match information can be found at the AAES website.

Application and Contact Information

For any questions regarding Endocrinology and Metabolism Institute fellowship programs, please contact Nada Johnson at 216.445.9863 or

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. Pleasedo 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, 2015. 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 September 11 and 18, 2015. 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 M.D and Complex for D.O.
  • ECFMG Report (if applicable)

Foreign medical graduates will need to have completed a US-based residency program in Internal Medicine prior to beginning the program. Fellowship periods begin July 1.

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 browse, 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, 2015, applicants receive ERAS token
  • On July 1, 2015, ERAS is open for applicants to start uploading their documents
  • On July 15, 2015, applicants begin applying to July cycle ACGME fellowship programs and fellowship programs start receiving applications.

Program Structure

The typical schedule is a combination of 13 modules per year.
First year fellow:

  • 16 weeks of in-patient or consult service, designed in 2 or 4 week blocks. Note: 1st year fellow will not be assigned to this service until after the completion of the Board Exam.
  • 2 weeks of elective
  • 15 days of vacation time
  • 31 weeks of Continuity Clinic, Research, and Specialty (3 half days of each/per week)

Second year fellow:

  • 8 to 10 weeks of in-patient or consult service, designed in 2 or 4 week blocks
  • 6 weeks of elective
  • 15 days of vacation time
  • 31 to 33 weeks of Continuity Clinic, Research, and Specialty (3 half days of each/per week)


Out-Patient Rotation

  • Continuity Clinic: Fellows will be working with an assigned 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 an initial management plan. The HP is then presented to the precepting physician and feedback is provided to the fellow. All fellows have an Endocrine Continuity Clinic for two years. 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 one hour, follow up visits are 30 minutes. The clinic is scheduled for 4 hours. Fellows are also trained in thyroid ultrasound, fine needle aspiration, insulin pump management and continuous glucose monitoring technology.There are no call or weekend coverage during this rotation.
  • Specialty Rotation: 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 will rotate in three half-day blocks per week through all sub-specialty teaching clinics (including thyroid, pituitary, metabolic 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.

In-Patient Rotation

This rotation involves extensive inpatient exposure to the full spectrum of problems in endocrinology and metabolism including disorders of the thyroid, adrenal, hypothalamus, pituitary, parathyroids and gonads, endocrine hypertension, metabolic bone and calcium disorders, type 1 and 2 diabetes mellitus, and obesity and lipid disorders. 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. Treatment and management of acute and chronic endocrine disorders in the hospital setting.
  3. Leadership role in organizing the team, receiving consultations, distributing consultations to other team members and supervising students and residents on the service.
  4. Organize and distribute cases to be presented at Endocrine Grand Rounds (EGR) and present cases and case discussions at EGR.

During the rotation, fellows are expected to work with an assigned 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. 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. The fellow takes call from home 3 nights per week while on the hospital rotation and presenting cases at EGR. Attending core curriculum lectures and journal club meetings are mandatory for all fellows.

Fellows have one day off per week while on hospital service.

Educational Activities

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

  • Core curriculum lectures
  • EGR: Research talk, cases
  • Pituitary tumor boards
  • Adrenal tumor boards
  • Thyroid tumor boards
  • Thyroid Club
  • Obesity Club
  • Thursday Didactic sessions

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 Friday 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

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.

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

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 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.

Meet Our Fellows

Khawla Fuad Ali
  • Medical School:Weill Cornell Medical College, Doha, Qatar
  • Residency:Weill Cornell Medical College, New York, NY
  • Second-year fellow
Lea El Hage
  • Medical School: University of Balamand Faculty of Medicine and Medical Sciences, Tripoli, Lebanon
  • Residency:Medstar Good Samaritan Hospital, Baltimore, MD
  • Second-year fellow
Carmen Polanco Santos
  • Medical School:Pontificia Universidad Catolica Madrey Maestra, Dominican Republic
  • Residency: Cleveland Clinic, Weston, FL
  • Second-year fellow
Vicente San Martin Montenegro
  • Medical School: Dominican Republic - Universidad Iberoamericiana 
  • Residency: St. Luke's-Roosevelt Hospital Center, New York, NY
  • First-year fellow
Keren Zhou
  • Medical School: Cleveland Clinic Lerner College of  Med of Case Western Reserve
  • Residency: Cleveland Clinic - Internal Medicine, Cleveland, OH
  • First-year fellow

Meet Our Surgery Fellows

Cassandre Benay
  • Medical School: Queen's University, Faculty of Medicine, Kingston, Ontario, Canada
  • Residency: McGill University, Montreal, Quebec, Canada
  • First-year fellow
Iuliana Bobanga
  • Medical School: Wayne State University School of Medicine
  • Residency: Cleveland Clinic - University Hospitals Case Medical Center
  • First-year fellow