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Investigators

Physicians who bring expertise, knowledge and passion

Our clinical investigators bring a wealth of knowledge and leadership to our organization. With a full range of specialties and interests, they work actively and onsite with our research teams to deliver the most reliable, comprehensive data available in the industry.
 
 
 
Mohammed Abubaker, MD
Marietta Rheumatology Associates, PC. www.mariettarheumatology.com
Board Certified Rheumatologist
Rheumatology Fellowship: Emory University
 

Dr. Abubaker completed his fellowship at Emory University School of Medicine in 2000. He was chief resident in Internal Medicine at Bridgeport Hospital. He is board certified in Internal Medicine and Rheumatology. He has published and presented several research papers in the American College of Rheumatology conferences. He enjoys sports, traveling, and social services.  
 
Clinic Location:
670 North Ave
Marietta, GA 30060

     
William F. Keeton, MD

Dr. Bill Keeton is Board Certified by the American Board of Anesthesiology and the American Board of Pain Medicine. He has over 35 years of experience in pain management.

Dr. Keeton received a BS in chemistry from the University of Mississippi and his MD degree form the University of Mississippi Medical School. He completed his residency in anesthesiology at Parkland Memorial Hospital in Dallas, Texas. He also trained under his good friend and mentor, Dr. Janet Travell who was President John F. Kennedy’s White House Physician. Dr. Keeton was the founder and director of DeKalb Pain Center at DeKalb Medical Center from 1984 until he joined Pain Consultants of Atlanta in August of 2007.

Dr. Keeton served the US Air Force (USAF) as chief of Anesthesia and chief of Pain Clinic which he established at Westover AFB in Massachusetts and is a frequent lecturer on emerging and state-of-the-art pain management.

Dr. Keeton served as chief of anesthesia at DeKalb Medical for 15 years before devoting his time to pain management full time in 1997.

He is past president of the DeKalb Medical Society and the Greater Atlanta Society of Anesthesiologists.

He currently serves on the Janssen Pharmaceuticals advisory board.

Jefrey D. Lieberman, MD  
Specialty: Rheumatology
Board Certification: Rheumatology and Internal Medicine
 
Dr. Lieberman graduated from Ohio State University School of Medicine and completed his internship and residency at the Cleveland Clinical Foundation and fellowship in Rheumatology & Immunology at Emory University.
 
He currently holds appointments as Chief of Medicine, Dekalb Medical Center Medical, Consultant & National Spokesperson for Arthritis Foundation and Clinical Associate Professor Emory University School of Medicine.

 

Raj Midha, MD

Specialty: Internal Medicine

Board Certification: Internal Medicine

 

Dr. Midha graduated from Ross University School of Medicine in Portsmouth Dominica. He completed his residency in internal medicine at Medical College of Virginia in Richmond Virginia.
 

Roel N. Querubin, MD
Marietta Rheumatology  Associates, PC
www.mariettarheumatology.com
Board Certified Rheumatologist
Rheumatology Fellowship: Emory University


Dr. Querubin is a Board Certified Rheumatologist and completed his Rheumatology fellowship at Emory University School of Medicine. He has a Bachelor of Science degree from the Georgia institute of Technology and attended Medical School at the Medical College of Georgia from 1991-1995. He completed a three year Internal Residency program at the Atlanta Medical Center in 1998. He has been practicing Rheumatology in the Atlanta area since completing his Rheumatology Fellowship in 2000. Hobbies include golf, music, martial arts and spending time with his family.
 
Clinic Location:
670 North Ave

Marietta, GA 30060
 

 
Maria N. Onuorah, ARNP
 
Maria is a Nationally Certified Nurse Practioner. She has over 17 years of experience in the areas of Rheumatology, Cardiology, Coronary Intensive Care, Elderly care and Home Health. Maria received her Bachelor of Science in Nursing and Master of Science in Nursing from Emory University. She lives in Atlanta with her husband and children. She enjoys reading, speed walking, and traveling with her family.
 

 
Ginger Spitzer, MMSc., PA-C
 
Ginger Spitzer PA-C attended Georgia Institute of Technology undergraduate and graduated with a degree in Applied Psychology and a minor in Chemistry. She attended Emory University’s Physician Assistant Program and graduated in 2001 with high honors. She has worked in rheumatology for approximately 4 ½ years with a short stint in orthopedics as well. She published an article titled “Current Approach to the Evaluation and Management of Acute Monoarthritis” March 2003 in the peer reviewed journal, Physician Assistant. She is a mentor and lecturer at the Emory University PA program lecturing on rheumatology and other joint related topics. She is married with one daughter. 
 

 
Dharmaraj Patil, MD
Specialty: Internal Medicine and Gastroenterology
Board Certification: Internal Medicine
Training: Dr. Patil graduated from Karnatak Medical College in Hubli, India.

His post graduate training includes acting as a senior house officer in the emergency room at the Hackney Hospital in London, UK. Additional training in internal medicine and fellowship in Gastroenterology.
Dr. Patil is the founder and CEO of Metro Medical Associates with offices in Decatur and Alpharetta, Georgia
 

 
Nancy Green, RN, BS

Research Director

 

With degrees in nursing and health science from SUNY Farmingdale, Nancy brings over 20 years of health care experience and 15 years of research experience to CSI. Her clinical experience includes oncology, cardiology, rheumatology and chronic pain conditions.

  
  

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