John LienMD
Cardiology·San Jose, CA
John Lien, MD is a Cardiology provider in San Jose, CA affiliated with 1 ambulatory surgery center in CA, as of July 2026.
- NPI1932291648
- Registered2006
- Centers1
- StateCA
- Class of1987
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 Lien at a glance
- Provider
- John Lien
- Credential
- MD
- Specialty
- Cardiovascular Disease (Cardiology)
- Procedures
- Cardiology CPT codes
- Location
- San Jose, CA
- Medical school
- University of California, Irvine, California College of Medicine
- Graduated
- 1987
- NPI registered
- 2006
- NPI
- 1932291648
- 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 Lien practice?
John Lien, MD is based in San Jose, CA and is affiliated with 1 ambulatory surgery center: Evergreen Surgery Center LLC in San Jose, CA. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is John Lien's NPI number?
John Lien's National Provider Identifier (NPI) is 1932291648, registered in 2006. Specialty on record: Cardiovascular Disease (Cardiology); credential MD.
Where did John Lien go to medical school?
John Lien, MD attended University of California, Irvine, California College of Medicine, graduating in 1987.
How many Cardiology providers in California work at ambulatory surgery centers?
444 Cardiology surgeons and proceduralists in California are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, John Lien among them. The California Cardiology directory lists each one by city with credential, NPI, and center affiliations.
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