Spine Fellowship

Spine Fellowship overview

Dr. Clifford Lin
Dr. Clifford Lin

We aim to provide our fellows with the clinical and surgical skills to manage all aspects of a modern surgical spine practice. We strongly emphasize decision-making based on the principles of evidence-based medicine. Our fellows gain in-depth knowledge of primary and revision degenerative problems of the cervical and lumbar spine, adult spinal deformities and spinal trauma, including spinal cord injuries. Exposure to minimally invasive techniques and pediatric deformities is also available. Protected time for study and research is assured. Fellows are expected to participate in at least one original research project supervised by an attending spine surgeon, and one review article, book chapter or similar. Fellows also participate in weekly educational conferences with the orthopaedics and neurosurgical residents. No general orthopaedic call is required. Fellows can expect to participate in over 300 surgical cases, including many complex revision procedures. Surgical involvement will increase as the fellow gains maturity, with the goal of operating independently and managing a complex surgical spine caseload by the end of the fellowship.
~ Dr. Clifford Lin, Spine Fellowship Director

Experience OHSU Graduate Medical Education, the wonders of Oregon, and something bigger.

Spine Fellowship program details

The Department of Orthopaedics and Rehabilitation at Oregon Health & Science University seeks applicants for 12-month clinical fellowships. Candidates should have completed the equivalent of five years of orthopaedic training in the United States. International applicants must have completed the ECFMG exam.

Interview dates for the 2023-2024 fellowship:

  • Monday, January 10, 2022
  • Monday, January 24, 2022
  • Monday, February 7, 2022

​​​​​​​All interviews will be virtual using Webex.

How to apply

Please apply through Spine Fellowship Match.

Dr. Michael Wheeler, OHSU Spine Fellow

Michael Wheeler, M.D.

Michael is from Houston, Texas. He earned his undergraduate degree at The University of Texas at Austin where he studied Finance. He attended medical school at The University of Texas Medical Branch where he graduated with honors and was a member of Alpha Omega Alpha Honor Society. Michael completed his orthopaedic surgery residency at John Peter Smith Hospital in Fort Worth, Texas. During residency, Michael decided he wanted a career specializing in treating the full breadth of adult spine pathology - from simple to complex.  Michael is excited to be a member of the OHSU spine team where he looks forward to the wide exposure of spine pathology the he will get during his fellowship.

Dr. Stephen Hoge, OHSU Spine Fellow

Stephen Hoge, M.D.

Stephen is from Oklahoma City, OK. He earned his undergraduate degree at the University of Central Oklahoma where he studied Biology. He attended medical school at the University of Oklahoma where he graduated with honors. He completed his orthopaedic surgery residency at Louisiana State University in Shreveport, LA. During residency, Stephen decided to pursue a career focusing on adult spinal problems, from degenerative disease to trauma.  Stephen is excited to be a part of the OHSU spine team and look forward to treating multiple areas of spinal pathology.

Incoming fellows 2021-2022


Previous fellows

2019-2020.    Vikram Sampath, M.D.

2018-2019     Vivek Natarajan, M.D. & Thuy M. Nguyen, D.O.

2017-2018     Aaron Kunkle, DO

2017-2018     Chandrakanth Boddu, MD

2016-2017     Wesam Nasrallah, MD

2015-2016     Christopher Kong, MD

2015-2016     Ngoc-Lam Nguyen, MD

2014-2015     Renuka Kuruvalli, MD

2014-2015     Sourabh Mukherjee, MD

2013-2014     Satoshi Kawaguchi, MD

2012-2013     Max Berdichevsky, MD

2012-2013     Marc El Najjar, MD

2011-2012     Ahmed Mohamed, MD

2011-2012     Paolo Punsalan, MD

2010-2011     David Ferachi, MD

2010-2011     Brian Jones, DO

2009-2010     Kurtus Dafford, MD

2008-2009     Geoffrey Kaung, MD

2005-2006     Alex Ching, MD

As an extension of the faculty, fellows are responsible for participating in patient care, including operative care, inpatient care, call and clinics. Fellows are also responsible for resident education, and are required to participate in weekly basic scientific and clinical conferences, as well as clinical or basic research. The goal of the fellowship is to produce a well-rounded spine surgeon who can provide a valuable contribution to the medical community. The main priorities are: 1) surgery and patient care; 2) research and education.

Operative care

During the clinical year the fellows are the primary assistants to the attending physician during surgery. The fellows do not operate independently except as directed to do so by the attending physician. Cases include primary and revision degenerative problems of the cervical and lumbar spine, adult spinal deformity, spinal trauma including spinal cord injury patients, and fracture and tumor patients.

Inpatient care

The spine service is run by three full-time attending orthopaedic spine surgeons, with fellows functioning as junior consultants. Fellows are responsible for supervision of two orthopaedic residents assigned to the spine service (PGY-1 and PGY-4).  Fellows and residents are responsible for ensuring adequate communication with the attending physician(s). While the primary responsibility for inpatient work rounds is carried by the residents, fellows are responsible for knowledge of and involvement with patient care on an ongoing basis.


Spine call is divided equally between the orthopaedic and neurosurgical services. Call is taken in one-week blocks that begin on Mondays at 6 a.m. Fellows are responsible for devising a call schedule that ensures that there is a fellow covering each on-call block. The spine team PGY-4 also participates in the spine call schedule, taking up to two days of call in any week.


Fellows are expected to be at all clinic sessions with the attending physician(s) as dictated by the trainee schedule. Fellows will become proficient in the diagnosis of clinical disorders of the spine, the pathogenesis of these disorders, the operative and nonoperative treatment modalities available for managing these disorders, and the results and complications of such treatment. This learning environment provides a unique opportunity to develop clinical judgment that will ultimately lead to the ability to function independently as the primary surgeon.


Fellows are expected to attend and participate in the following weekly scheduled conferences at OHSU:

  • Grand Rounds/M&M -- Presentation of service M&M summary will be done by the PGY-1 or PGY-4. Presentation of individual cases will either be by the senior resident or the fellows, depending on faculty assignment.
  • Spine lecture series -- Fellows will alternate presenting 30-minute didactic lectures with the neurosurgery residents. Each fellow thus presents approximately one didactic lecture every other month. The PGY-4 on service will also present once during their rotation.
  • Spine indications conference -- Fellows and residents will present operative elective cases for the upcoming week. Fellows are responsible for presenting or guiding the residents in presenting concise patient histories, including relevant radiographs.

Fellows are permitted to attend one approved course or national meeting during the fellowship year, with a $1500 travel stipend provided by the department. To ensure adequate coverage of the service, fellows to should plan to attend different meetings. Additional meetings may be approved on a case-by-case basis if the fellow has original research to present.

All fellows are expected to participate in at least one original research project, supervised by an attending spine surgeon, and one review article, book chapter or similar. Opportunities for both in-house and external grant funding exist for collaboration in valid clinical or basic science research projects. An epidemiologist and outside statistical consultant are available for research project design and analysis. In addition, two full-time research assistants support the spine service. Fellows are encouraged to begin their research project early, in order to prepare abstracts for submission by March or early April. The goal is to have a peer-review publication submitted by the end of the fellowship year.

Timeline for milestones is as follows:

  • Review of research opportunities complete by Sept. 1
  • Presentation of written research proposal with critique by faculty by Dec. 1
  • Submission of first draft of the paper to faculty advisor(s) by March 1

Authorship: Fellows will be given first authorship on papers if they complete a nearly final draft prior to the conclusion of the fellowship. However, if the attending physician has to substantially complete the paper, or a major rewrite is needed, the fellows will forgo the privilege of first authorship.

Presentation: Costs for travel and registration to any North American meeting at which the fellows are presenting original research will be covered by the spine education fund. Abstract authorship and presentation will be handled as for paper authorship.