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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 (13)

The overall average patient rating of Dr. Hans Gruenn, Family Practitioner is Excellent. Dr. Gruenn has been reviewed by 19 patients who have provided 13 comments. The rating is 4.5 out of 5 stars.

Patient Ratings
Ease of Appointment 4.5
Promptness 4.4
Courteous Staff 4.5
Accurate Diagnosis 4.5
Bedside Manner 4.8
Spends Time with Me 4.4
Follows Up After Visit 4.4

Specialties & Research

  • He has special expertise in 15 areas:
  • Acupuncture
  • Allergy
  • Arthritis
  • Autoimmune Diseases
  • Cardiovascular Disease
  • Chelation Therapy
  • Chronic Fatigue Syndrome
  • Diabetes
  • Fibromyalgia
  • Hormone Replacement Therapy (HRT)
  • Hypoglycemia
  • Lyme Disease
  • Nutrition Disorders
  • Nutritional Support
  • Preventive Medicine

Education & Awards

Dr. Gruenn graduated from Ruprecht-Karls-Universitaet Heidelberg. He has 4 awards.

Patients' Choice 5th Anniversary Award (2015)
Patients' Choice Award (2011 - 2015)
Compassionate Doctor Recognition (2011 - 2013)
On-Time Doctor Award (2014 - 2015)


  • Spanish
  • German
  • Swedish
  • Hungarian

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Additional Information
Dr. Hans Dieter Gruenn MD is a male Family Practitioner, has 28 years of experience and practices in Family Medicine.
Where does Dr. Hans D. Gruenn practice?
Dr. Hans Gruenn has 1 office location.
Dr. Hans Gruenn practices Family Medicine near Los Angeles, CA.
See Los Angeles Primary Care Doctors.