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Meet Our Providers

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Carlos J. Rozas, MD, FACP, FCCP

Dr. Rozas attended the University of Miami for undergraduate and medical school. He moved to Phoenix, Arizona for his Internal Medicine training, then returned to Tampa for his training in Pulmonary Diseases and Critical Care Medicine.

Dr. Rozas established the practice in 1983, and presently, this is the largest private Pulmonary and Critical Care Medicine practice in the Tampa Bay area.

Dr. Rozas is board certified in Internal Medicine, Pulmonary Diseases, and Critical Care Medicine. He is a fellow of the American College Of Physicians, as well as the American College of Chest Physicians. He is an Assistant Clinical Professor of Pulmonary and Critical Care Medicine at the University of South Florida College of Medicine.

His interests include general Pulmonary medicine, with a special interest in Sarcoidosis.

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Domenick J. Reina, MD, FCCP

Dr. Reina completed his undergraduate degree at the University of the South and obtained his medical degree from University of Florida. He completed his internship and residency training in Internal Medicine as well as a Fellowship in Pulmonary and Critical Care Medicine at the University of South Florida, College of Medicine, Tampa, Florida.

Dr. Reina is Chief of Pulmonary Medicine at St. Joseph’s Hospital and St. Joseph’s Hospital North. He has also served as Chief of Staff there. He is the Co-Director of the Pulmonary Rehabilitation Program and Co-Director of Respiratory Services at St. Joseph’s Hospital.

He is a fellow of the American College of Physicians. Dr. Reina is board certified in Internal Medicine, Pulmonary Medicine, and Critical Care Medicine. Dr. Reina is a Tampa native.

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Natarajan Subramanian, MD, FCCP

Dr. Subramanian completed his Residency in Internal Medicine (1997-2000) from Coney Island Hospital in Brooklyn affiliated with SUNY at Brooklyn, NY. Subsequently, he practiced as an Internist and a primary care physician in Saint Petersburg, Florida for 5 years. He then completed a fellowship in Pulmonary Diseases and Critical Care Medicine (2005-2008) at the University of South Florida, Tampa. He developed a special interest in Sleep Medicine and subsequently, completed a fellowship in Sleep Medicine from USF, Tampa in 2008-2009.

Dr. Subramanian is passionate about the treatment of various sleep disorders including Sleep Apnea, Insomnia, and Narcolepsy. He is the director of the Sleep Lab at the St. Joseph’s Hospital, Tampa, and the St. Joseph’s Hospital-North in Lutz, Florida. He is also the Co-Director of the pulmonary section St. Joseph’s Hospital, Tampa. Dr. Subramanian is board certified in Internal Medicine, Pulmonary Medicine, Critical Care and Sleep Medicine.

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Daniel A. Rozas, MD

Dr. Rozas has spent most of his life in Tampa. He graduated from Jesuit High School. Afterwards, he completed his undergraduate degree at the University of Florida. He also completed a post baccalaureate degree at the University of South Florida. He then went to Puerto Rico for medical school. He returned home to Tampa for Internal Medicine residency and Pulmonary Diseases/Critical Care Fellowship at the University of South Florida.

Dr. Rozas is board certified in Internal Medicine, Pulmonary Disease, and Critical Care Medicine. He is a fellow of the American College of Chest Physicians. His interests include general pulmonary diseases.

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Michael S. Alvarez, DO, MPH, FCCP

Dr. Alvarez is originally from Miami were he completed his undergraduate degree at the University of Miami and then went on to medical school at Nova Southeastern University. Dr. Alvarez also earned a Masters in Public Health while at Nova Southeastern. He completed his internal medicine training at the Cleveland Clinic Florida were he spent his final year as chief resident. He then moved to Tampa where he completed his fellowship in Pulmonary and Critical Care at the University of South Florida. He is board certified in Internal Medicine, Pulmonary Diseases, and Critical Care Medicine.

Dr. Alvarez has special interest in advanced diagnostic bronchoscopy, including Navigational Bronchoscopy for lung nodules, Endobronchial Ultrasound for the diagnosing and staging of lung cancer and Cryo-Transbronchial lung biopsies for the diagnosis of Interstitial Lung Disease. He also has interest in the management of Pulmonary Hypertension.

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Eric Scott Klug, PA-C

Eric Klug is originally from Long Island, New York. He moved to Florida at a young age where he attended and graduated from Shorecrest Preparatory School. He continued his studies at the University of Florida where he found his passion for medical sciences. He later transferred to the University of Central Florida where he graduated Summa Cum Laude with a Bachelor’s Degree in Cardiopulmonary Sciences. Subsequently, Eric practiced for four years as a Respiratory Therapist at St. Joseph’s Hospital.

Eric extended his dedication and pursued his passion. He relocated to south Florida where he began the Physician Assistant Program at Nova Southeastern University. Eric graduated with a Bachelor’s Degree in Physician Assistant Studies as well as a Master’s Degree in Medical Sciences. In recognition of his studies, he received Dean’s Award for highest GPA/Cum Laude.

Prior to joining Tampa Pulmonary & Sleep Specialists, Eric practiced as a Physician Assistant for 14 years. Eric specialized in Internal Medicine for a Hospitalist group in Tampa. He resides in Tampa Bay area with his wife and 2 children.

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Janet C. Johnson, MSN, APRN-BC

Jan earned her Nursing Degree at Pensacola Junior College. She worked in the Cardiovascular Surgical Intensive Care Unit at Mercy Medical Center in Des Moines, Iowa. She then moved to the Tampa Bay area in 1979 and worked in Critical Care at Tampa General Hospital including Cardiac Surgical Intensive Care Unit and the Cardiac O.R. until 1998.

She returned to school and earned her BSN and Masters in Nursing at the University of Tampa in Family Practice. Jan’s areas of expertise include Cardiology and Pulmonary Medicine. Jan is certified as an Advanced Registered Nurse Practitioner in Family Practice and she has worked with our group since 2003.

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Bridget M. Nakielski, MSN, APRN-C

Bridget is a certified Advance Practice Registered Nurse in Adult practice. She graduated from Barry University in Miami with a Bachelor of Science degree in Nursing. She completed her nurse practitioner training at University of Tampa where she received her Master of Science degree in nursing. She is certified by and a member of the American Association of Nurse Practitioners, and is also a member of the American Association of Critical Care Nurses. Bridget has worked in critical care as an RN and APRN for over 14 years with a focus on pulmonary medicine.

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Elvira Kirksey, CMM
Office Manager

Elvira, our Office Manager, ensures the daily operations of our practice run smoothly. Elvira has over 25 years’ experience as a medical office manager and earned the certification Certified Medical Manager in 2007. The CMM Credential provides assurance to physicians, medical boards, and the public that the PAHCOM CMM has been tested under strict requirements using psychometrically determined processes and found to be competent in the administrative management of health care organizations. The CMM is the only nationally accredited professional certification specific to practice management with focus on managers of solo provider and small group physician practices.

Elvira has been a resident of Brandon, Florida, since she moved there in 1991, when her husband retired from the Air Force. When she is not working, she enjoys spending time with her family, cooking, and traveling.