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. Ryan Kretzer:
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The overall average patient rating of Dr. Ryan Kretzer is Excellent.
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Dr. Kretzer has 4 hospital affiliations:
- Tucson Heart Hospital
- Carondelet St Joseph's Hospital Tucson
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- Additional Information
- Dr. Ryan Michael Kretzer MD is a male Neurosurgeon and practices in Neurological Surgery.
- Where does Dr. Ryan M. Kretzer practice?
- Dr. Ryan Kretzer has 1 office location.
Dr. Ryan Kretzer practices Neurological Surgery near Tucson, AZ.
See Tucson Surgeons.