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Internist, Geriatric Specialist (elderly care)
38 years of experience
Video profile
Accepting new patients
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. Henry Grainger:

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  1. Qualifications
  2. What's important to you

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Patient Reviews

Patient comments (3)

The overall average patient rating of Dr. Henry Grainger is Excellent. Dr. Grainger has been reviewed by 12 patients who have provided 3 comments. The rating is 5 out of 5 stars.

Patient Ratings
Ease of Appointment 4.6
Promptness 4.6
Courteous Staff 5.0
Accurate Diagnosis 5.0
Bedside Manner 5.0
Spends Time with Me 5.0
Follows Up After Visit 4.3

Specialties & Research

Dr. Henry Grainger, DO, MD is board certified in Internal Medicine and Geriatric Medicine.

Education & Awards

Dr. Grainger graduated from University of Missouri at Kansas City. He has 3 awards.

Castle Connolly's Top Doctors™ (2012 - 2013)
Patients' Choice Award (2008 - 2009, 2014)
Castle Connolly Top Doctors: Texas™ (2009)


Dr. Grainger has 9 hospital affiliations:

  • Memorial Hermann Northwest Hospital 
  • The Methodist Hospital 


  • Tagalog
  • Spanish
  • German

> > > > Dr. Henry Grainger, DO, MD

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Additional Information
Dr. Henry Jack Grainger DO and MD is a male Internist, has 38 years of experience and practices in Internal Medicine and Geriatric Medicine.
Where does Dr. Henry J. Grainger practice?
Dr. Henry Grainger has 1 office location.
Dr. Henry Grainger practices Internal Medicine and Geriatric Medicine near Houston, TX.
See Houston Internists and Houston Geriatric Doctors.