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The Parkwest Sleep Center Clinicians
Learn about our clinicians and their education and credentials.
Which Clinician Will I See When I Visit the Sleep Disorders Center?
As a patient at the Sleep Disorders Center, you may see any of the following sleep center clinicians during your evaluation and treatment:
- Our certified sleep physicians
- The nurse practitioner
- Our polysomnographic (PSG) or continuous positive airway pressure (CPAP) technicians
Gnanaraj Joseph, MD, ABIM, ABPD, ABCC, ABSM
Dr. Joseph has been a Diplomate of the American Board of Sleep Medicine since 2005. He comes to sleep medicine from the field of pulmonary medicine.
Education
- Thanjavur Medical College / Bharathidasan University, Thanjavur, India
- Residency — North Shore University Hospital, Forest Hills, New York
- Fellowship — North Shore University Hospital, Manhasset, NYU School of Medicine, New York
Board Certifications
- American Board of Internal Medicine (2001)
- Pulmonary Medicine (2003)
- Sleep Medicine (2007)
- Critical Care Medicine (2004)
Memberships
- American Thoracic Society
- American Academy of Sleep Medicine
- American College of Chest Physicians
- American Medical Association
Abdelhamid Alsharif, MD, ABIM, ABPD, ABCC, ABSM
Dr. Alsharif comes to sleep medicine from the field of pulmonary medicine.
Education
- University of Tennessee College of Medicine, Knoxville, Tennessee
- Residency & Fellowship — University of Tennessee Health Science Center, Knoxville, Tennessee
Board Certifications
- American Board of Internal Medicine (2012)
- Pulmonary Medicine (2014)
- Sleep Medicine (2007)
- Critical Care Medicine (2015)
Memberships
- American Academy of Sleep Medicine
- American Thoracic Society
- American College of Chest Physicians
- American Medical Association
- Southern Medical Association
- Tennessee Medical Association
Bruce Henschen, MD, ABIM, ABPD, ABCC, ABSM
Dr. Henschen also comes to sleep medicine from the field of pulmonary medicine.
Education
- East Carolina University College of Medicine, Greeneville, NC.
- Internship & Residency — University of Kentucky College of Medicine, Lexington, Kentucky
- Pulmonary/Critical Care Fellowship — Medical College of Georgia, Augusta, Georgia
Board Certifications
- American Board of Internal Medicine (1985)
- Pulmonary Medicine (1988)
- Critical Care (1989)
- Sleep Medicine (2009)
Memberships
- American College of Physicians
- American College of Chest Physicians
- American Thoracic Society
Andrews Paul, MD, ABIM, ABPD, ABCC, ABSM
Dr. Paul comes to sleep medicine from the field of pulmonary medicine, as well.
Education
- Kottayam Medical College, Kerela, India
- Residency — New York Methodist (2000)
- Pulmonary/Critical Care Fellowship — The Penn State University Milton S. Hershey Medical Center, Hershey, Pennsylvania (2003)
Board Certifications
- American Board of Internal Medicine (2000)
- Pulmonary Medicine (2003)
- Critical Care (2004)
- Sleep Medicine (2004)
Memberships
- American College of Chest Physicians
- American Thoracic Society
- American Academy of Sleep Medicine
Matthew Reichert, MD, ABIM, ABPD, ABCC, ABSM
Dr. Reichert also comes to sleep medicine from the field of pulmonary medicine.
Education
- Southern Illinois University, Springfield, Illinois
- Residency & Fellowship — University of Kentucky, Lexington, Kentucky
Board Certifications
- American Board of Internal Medicine (2005)
- Pulmonary Medicine (2007)
- Critical Care (2008)
- Sleep Medicine (2011)
Memberships
- American Thoracic Society
- American College of Chest Physicians
- American College of Physicians-American Society of Internal Medicine
P. Lynn Nichols, MD, ABIM, ABPD, ABCC, ABSM
Dr. Nichols is the Medical Director for Sleep Services for StatCare and also comes to sleep medicine from the field of pulmonary medicine.
Education
- East Tennessee State University – James H. Quillen College of Medicine, Johnson City, Tennessee
- Residency & Fellowship — Medical University of South Carolina
Board Certifications
- American Board of Internal Medicine (1998)
- Pulmonary Medicine (2000)
- Sleep Disorders Medicine (2005)
Our Sleep Center Nurse Practitioner
Gwen Crenshaw, NP
Ms. Crenshaw is a Nurse Practitioner with twelve years of experience in Sleep Medicine. A strong member of our Parkwest Sleep Center team, Ms. Crenshaw is committed to helping our clients successfully treat their sleep disorders.
Education
- B.S., Physical Therapy (1988) — Medical University of South Carolina,
- Masters Degree, Nursing (1998) — University of Tennessee, Knoxville, Tennessee
Board Certifications
- Family Medicine
- Occupational Health
Background
Ms. Crenshaw worked in Occupational Medicine and the Urgent Walk-in Clinic environment for eight years before joining Covenant Health.