Ryan KretzerM.D.
Neurosurgery·Tucson, AZ
Ryan Kretzer, M.D. is a Neurosurgery provider in Tucson, AZ, as of July 2026.
- NPI1861545766
- Registered2007
- Class of2004
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Education
Education on record as of August 2026.
Ryan Kretzer at a glance
- Provider
- Ryan Kretzer
- Credential
- M.D.
- Specialty
- Neurosurgery
- Procedures
- Neurosurgery CPT codes
- Location
- Tucson, AZ
- Medical school
- Johns Hopkins University School of Medicine
- Graduated
- 2004
- NPI registered
- 2007
- NPI
- 1861545766
- Snapshot
- July 2026
Identity, specialty, and affiliations change over time. This is not an endorsement, and not clinical, billing, or legal advice. Providers may request corrections at founders@datalilyai.com. Read the DataLily AI data methodology.
Questions
Where does Ryan Kretzer practice?
Ryan Kretzer, M.D. is based in Tucson, AZ. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is Ryan Kretzer's NPI number?
Ryan Kretzer's National Provider Identifier (NPI) is 1861545766, registered in 2007. Specialty on record: Neurosurgery; credential M.D.
Where did Ryan Kretzer go to medical school?
Ryan Kretzer, M.D. attended Johns Hopkins University School of Medicine, graduating in 2004.
How many Neurosurgery providers in Arizona work at ambulatory surgery centers?
34 Neurosurgery surgeons and proceduralists in Arizona are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, Ryan Kretzer among them. The Arizona Neurosurgery directory lists each one by city with credential, NPI, and center affiliations.
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