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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. Daniel Holliday:

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Specialties & Research

  • He has special expertise in 7 areas:
  • Attention Deficit Disorder (ADD) / Attention Deficit Hyperactivity Disorder (ADHD)
  • Bipolar Disorder / Manic Depressive Disorder
  • Depression
  • Depressive Disorder
  • Insomnia
  • Schizophrenia
  • Sleep Disorders

Education & Awards

Dr. Holliday graduated from University of New England, Biddeford.


Dr. Holliday has 1 hospital affiliations:

  • Spring Harbor Hospital 

> > > > Dr. Daniel Holliday, DO

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Additional Information
Dr. Daniel A Holliday DO is a male Psychiatrist, has 9 years of experience and practices in Psychiatry.
Where does Dr. Daniel A. Holliday practice?
Dr. Daniel Holliday has 1 office location.
Dr. Daniel Holliday practices Psychiatry near Westbrook, ME.
See Westbrook Psychiatrists.