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License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Learn more about Dr. Gregory Hayes:

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Specialties & Research

Dr. Gregory Hayes, MD is board certified in Anesthesiology.

Education & Awards

Dr. Hayes graduated from The University of Texas Southwestern, Dallas.


Dr. Hayes has 2 hospital affiliations:

  • Medical Center Of Lewisville 
  • Medical Center Of Arlington 


  • English

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Additional Information
Dr. Gregory Hayes MD is a male Anesthesiologist, has 5 years of experience and practices in Anesthesiology.
Where does Dr. Gregory Hayes practice?
Dr. Gregory Hayes has 4 office locations.
Dr. Gregory Hayes practices Anesthesiology near Carmichael, CA.
Additional practice locations include: Sacramento, CA and Irving, TX.
See Carmichael Anesthesiologists.