John AttenelloM.D.
Orthopedic Surgery·Los Angeles, CA
John Attenello, M.D. is an Orthopedic Surgery provider in Los Angeles, CA affiliated with 1 ambulatory surgery center in CA, as of July 2026.
- NPI1629456553
- Registered2015
- Centers1
- StateCA
- Class of2015
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Ambulatory surgery centers
Centers whose service lines match this provider’s. Affiliations change; verify independently.
Education
Education on record as of August 2026.
John Attenello at a glance
- Provider
- John Attenello
- Credential
- M.D.
- Specialty
- Orthopedic Surgery
- Procedures
- Orthopedic Surgery CPT codes
- Location
- Los Angeles, CA
- Medical school
- University of California, San Diego School of Medicine
- Graduated
- 2015
- NPI registered
- 2015
- NPI
- 1629456553
- 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 John Attenello practice?
John Attenello, M.D. is based in Los Angeles, CA and is affiliated with 1 ambulatory surgery center: Surgery Center Of Long Beach in Long Beach, CA. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is John Attenello's NPI number?
John Attenello's National Provider Identifier (NPI) is 1629456553, registered in 2015. Specialty on record: Orthopedic Surgery; credential M.D.
Where did John Attenello go to medical school?
John Attenello, M.D. attended University of California, San Diego School of Medicine, graduating in 2015.
How many Orthopedic Surgery providers in California work at ambulatory surgery centers?
538 Orthopedic Surgery surgeons and proceduralists in California are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, John Attenello among them. The California Orthopedic Surgery directory lists each one by city with credential, NPI, and center affiliations.
Pilot Analysis
Get the complete John Attenello analysis
Tell us where to send it. Our team will prepare an analysis of John Attenello covering case volumes, referral patterns, payer mix, and how specialty peers compare, and email it to you within 5-10 business days. Need it faster? Book a demo.