Dr. William Greg Siefert

Medical Doctor

Dr. William Greg Siefert is a highly skilled and patient-centered healthcare professional with extensive experience evaluating and treating patients in private practice and hospital environments, particularly in pain medicine. Throughout his 35-year career in anesthesia administration, Dr. Siefert has demonstrated a commitment to providing the highest standard of care, with zero intraoperative fatalities or malpractice suits related to pain medicine practice.

One of his greatest strengths is his ability to delegate duties within multi-professional care teams, offering sophisticated team management skills. He also obtained financing to set up a pain practice and assisted in the setup of a new operative suite for injections that was certified and approved by the O.I.G.

Dr. Siefert is committed to staying ahead of the curve when it comes to 21st century healthcare trends. He has led the adaptation of clinical practices to performance measurement and value-based payment systems, ensuring that his patients receive the best possible care. He takes the time to educate his patients to ensure they are prepared for procedures and tests and to help establish the lifestyle changes needed to improve their health status.

Finally, Dr. Siefert possesses exceptional expertise in the administrative and service flow of medical offices and facilities. As an intervention pain specialist, he aided in the financing and setup of a high-complexity lab with Clinical Laboratory Improvement Amendments (CLIA), which resulted in doubling revenue from the previous baseline.

Dr. Siefert is proud of his accomplishments and excited about what the future holds. He looks forward to continuing to provide excellent patient care and staying at the forefront of pain medicine management.

Professional Credentials

Certifications / Licenses

  • Diplomate American Board of Anesthesiology, 1987

  • ABA subspecialty certification- Pain Management, 1998

  • American Board of Pain Medicine, 1998

  • Licensure Ohio, New York, Kentucky,

education background

  • M.D. from Ohio State University, Columbus, Ohio, conferred on 03/16/1979
  • B.A. in Chemistry, Magna Cum Laude from Miami University, Oxford, Ohio, conferred on 06/08/1975
  • Postgraduate Training:
  • Pain Management Fellowship at University of New Mexico, Albuquerque, NM from 10/2005-10/2006
  • Residency in Anesthesiology at Ohio State University Hospitals, Columbus, Ohio from 07/1981-06/1983
  • Residency in Ophthalmology (partial) at Duke University, Durham, North Carolina from 01/1980-10/1980
  • Internship at Mount Carmel Medical Center, Columbus, Ohio from 01/1979-12/1979

Professional Experience

  • Orthopedic Institute – Paducah , KY – locums

  • Injury-Care – Erlanger OH,  Bowling Green, KY and Lexington, KY

  • Locum Tenens – Pain Management and Anesthesia

  • Genesis HealthCare, Pain Management   Zanesville, OH

  • Anesthesia Locum Tenens after Pain Fellowship

  • Pain Management Fellowship  UNM

  • Deaconess Hospital, Evansville, Indiana

  • Anesthesia and Pain Management Services – Locum Tenens

  • Arizona Anesthesia, Phoenix, Arizona.  Independent Practice in Anesthesia and Pain Management

  • University of Colorado, Pain Treatment Center, Denver, Colorado.  Assistant Clinical Professor in Pain Management

  • Anesthesia Services.  Denver Health Center, Denver, CO

Connect with Dr. William Greg Siefert

Dr. W.L. Gregory Siefert is a highly experienced healthcare professional with extensive training and certifications in anesthesiology and pain management. With a career spanning over three decades, Dr. Siefert has held various positions in private practice, hospitals, and pain treatment centers across the United States. He is a diplomate of the American Board of Anesthesiology and holds subspecialty certification in pain management from the same board, as well as certification from the American Board of Pain Medicine. Dr. Siefert’s professional expertise and commitment to patient-centered care have resulted in an impeccable track record of zero intraoperative fatalities or malpractice suits related to pain medicine practice.


Monday - Friday: 9:00-5:30

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Dayton, OH