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. John Ahlering:

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Specialties & Research

Dr. John Ahlering, MD is board certified in Anesthesiology.

Education & Awards

Dr. Ahlering graduated from University of California at San Diego, La Jolla.


Dr. Ahlering has 2 hospital affiliations:

  • Stanford Hospital and Clinics 
  • Lucile Salter Packard Children's Hospital @ Stanford 


  • Spanish

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Additional Information
Dr. John Ryan Ahlering MD is a male Anesthesiologist, has 34 years of experience and practices in Anesthesiology.
Where does Dr. John R. Ahlering practice?
Dr. John Ahlering has 1 office location.
Dr. John Ahlering practices Anesthesiology near Stanford, CA.
See Stanford Anesthesiologists.