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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).

Patient Reviews

Patient comments (9)

The overall average patient rating of Dr. Daniel Callahan is Excellent. Dr. Callahan has been reviewed by 26 patients who have provided 9 comments. The rating is 4.5 out of 5 stars.

Patient Ratings
Ease of Appointment 4.3
Promptness 4.7
Courteous Staff 4.3
Accurate Diagnosis 4.6
Bedside Manner 4.6
Spends Time with Me 4.5
Follows Up After Visit 4.4

Specialties & Research

Dr. Daniel Callahan, MD is board certified in Pulmonary Disease.

  • He has special expertise in 5 areas:
  • Asthma
  • Bronchoscopy
  • Chronic Obstructive Pulmonary Disease (COPD)
  • Pneumonia
  • Respiratory Failure

Education & Awards

Dr. Callahan graduated from Medical College of Georgia, Augusta. He has 4 awards.

Patients' Choice 5th Anniversary Award (2012)
Patients' Choice Award (2008 - 2012)
Compassionate Doctor Recognition (2009 - 2012, 2014)
On-Time Doctor Award (2009)


Dr. Callahan has 5 hospital affiliations:

  • Northside Hospital 
  • Northside Forsyth Hospital 

> > > > Dr. Daniel Callahan, MD

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Additional Information
Dr. Daniel F Callahan MD is a male Pulmonologist, has 26 years of experience and practices in Pulmonary Disease.
Where does Dr. Daniel F. Callahan practice?
Dr. Daniel Callahan has 2 office locations.
Dr. Daniel Callahan practices Pulmonary Disease near Alpharetta, GA.
Additional practice locations include: Roswell, GA.
See Alpharetta Pulmonologists.