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Internist, Critical Care Specialist, Pulmonologist (lungs)
17 years of experience
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).

Patient Reviews

Patient comments (16)

The overall average patient rating of Dr. Ryan Klein is Good. Dr. Klein has been reviewed by 41 patients who have provided 16 comments. The rating is 3.5 out of 5 stars.

Patient Ratings
Ease of Appointment 4.5
Promptness 4.2
Courteous Staff 4.0
Accurate Diagnosis 3.6
Bedside Manner 3.1
Spends Time with Me 3.0
Follows Up After Visit 3.1

Specialties & Research

Dr. Ryan Klein, MD is board certified in Internal Medicine and Pulmonary Disease.

  • He has special expertise in 2 areas:
  • Asthma
  • Emphysema

Education & Awards

Dr. Klein graduated from University of Southern California , Los Angeles. He has 2 awards.

Patients' Choice Award (2008, 2010)
Compassionate Doctor Recognition (2010)


Dr. Klein has 19 hospital affiliations:

  • Saddleback Memorial Medical Center-Laguna Hills 
  • Fountain Valley Regional Hospital & Medical Center 


  • English
  • Spanish

> > > > Dr. Ryan Klein, MD

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Additional Information
Dr. Ryan M Klein MD is a male Internist, has 17 years of experience and practices in Internal Medicine, Critical Care Medicine, and Pulmonary Disease.
Where does Dr. Ryan M. Klein practice?
Dr. Ryan Klein has 1 office location.
Dr. Ryan Klein practices Internal Medicine, Critical Care Medicine, and Pulmonary Disease near Newport Beach, CA.
See Newport Beach Internists, Newport Beach Critical Care Practitioners, and Newport Beach Pulmonologists.