John HaroldMD
John Harold, MD is a Cardiology provider in Los Angeles, CA, as of July 2026.
- NPI1508927005
- Registered2006
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
John Harold at a glance
- Provider
- John Harold
- Credential
- MD
- Specialty
- Cardiovascular Disease
- Procedures
- Cardiology CPT codes
- Location
- Los Angeles, CA
- NPI registered
- 2006
- NPI
- 1508927005
- 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 Harold practice?
John Harold, MD is based in Los Angeles, CA. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is John Harold's NPI number?
John Harold's National Provider Identifier (NPI) is 1508927005, registered in 2006. Specialty on record: Cardiovascular Disease; credential MD.
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 Harold among them. The California Cardiology directory lists each one by city with credential, NPI, and center affiliations.
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