John AffeldtMD

Ophthalmology·Loma Linda, CA

John Affeldt, MD is an Ophthalmology provider in Loma Linda, CA affiliated with 3 ambulatory surgery centers in CA, as of July 2026.

NPI1275523375
Registered2005
Centers3
StateCA
Class of1977

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Ambulatory surgery centers

Centers whose service lines match this provider’s. Affiliations change; verify independently.

Cal Med ASC LLCColton, CA · Ophthalmology, Vascular · 6 on panelView center →
Loma Linda Surgical Institute LLCLoma Linda, CA · Ophthalmology · 14 on panelView center →
San Bernardino Eye Surgery Center LpColton, CA · Ophthalmology · 3 on panelView center →

John Affeldt at a glance

Provider: John Affeldt
Credential: MD
Specialty: Ophthalmology
Procedures: Ophthalmology CPT codes
Location: Loma Linda, CA
Medical school graduation: 1977
NPI registered: 2005
NPI: 1275523375
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 Affeldt practice?

John Affeldt, MD is based in Loma Linda, CA and is affiliated with 3 ambulatory surgery centers: Cal Med ASC LLC in Colton, CA, Loma Linda Surgical Institute LLC in Loma Linda, CA, and San Bernardino Eye Surgery Center Lp in Colton, CA. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.

What is John Affeldt's NPI number?

John Affeldt's National Provider Identifier (NPI) is 1275523375, registered in 2005. Specialty on record: Ophthalmology; credential MD.

How many Ophthalmology providers in California work at ambulatory surgery centers?

869 Ophthalmology surgeons and proceduralists in California are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, John Affeldt among them. The California Ophthalmology directory lists each one by city with credential, NPI, and center affiliations.

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