Donald MahonM.D.
Cardiology·Orange, CA
Donald Mahon, M.D. is a Cardiology provider in Orange, CA, as of July 2026.
- NPI1255335659
- Registered2005
- Class of1982
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Education
Education on record as of August 2026.
Donald Mahon at a glance
- Provider
- Donald Mahon
- Credential
- M.D.
- Specialty
- Cardiovascular Disease (Cardiology)
- Procedures
- Cardiology CPT codes
- Location
- Orange, CA
- Medical school
- Baylor College of Medicine
- Graduated
- 1982
- NPI registered
- 2005
- NPI
- 1255335659
- 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 Donald Mahon practice?
Donald Mahon, M.D. is based in Orange, CA. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is Donald Mahon's NPI number?
Donald Mahon's National Provider Identifier (NPI) is 1255335659, registered in 2005. Specialty on record: Cardiovascular Disease (Cardiology); credential M.D.
Where did Donald Mahon go to medical school?
Donald Mahon, M.D. attended Baylor College of Medicine, graduating in 1982.
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, Donald Mahon among them. The California Cardiology directory lists each one by city with credential, NPI, and center affiliations.
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