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John Francis Ling III, M.D.

NPI 1023436391ActiveIndividual· Ophthalmology· Lakewood, CA

Ophthalmology (M.D.) in Lakewood, California, trained at Indiana University School of Medicine (class of 2014). Their prescriptions cost Medicare Part D more than their services did: $546,261 for 4,899 claims, against $150,310 paid for services in 2024. Rxsight Inc was the largest of 7 companies reporting payments in 2025, $801.26 in all, mostly consulting fees.

Overview

NPI1023436391
StatusActive
Entity typeIndividual
CredentialM.D.
Sole proprietorNo
NPI issuedApr 2, 2014
Last updated in NPPESApr 17, 2020
Certified by providerApr 17, 2020

Specialties and licenses

TaxonomyCodeLicenseState
Ophthalmology Primary207W00000XA155679CA
Ophthalmology, Glaucoma Specialist207WX0009XA155679CA

About license numbers in NPPES

Exclusion screening

ListResultDetails
HHS-OIG LEIE · Oct 9, 2026No matchChecked by NPI and by name + state
North Carolina Medicaid · Nov 10, 2026No match—
New York OMIG · Nov 10, 2026No match—
Ohio Medicaid · Nov 10, 2026No match—
Pennsylvania Medicheck · Nov 10, 2026No match—
Washington HCA · Nov 10, 2026No match—

Official OIG search · How matching works ·Bulk check a roster

Medicare

Enrollment (PECOS)Enrolled Practitioner - Ophthalmology (CA)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients494
Services billed1,644 across 47 procedure codes
Paid by Medicare$150,310

Part D prescriptions in 2024

Prescriptions (claims)4,899 · 10,695 30-day fills
Patients932
Total drug cost$546,261
Generic share63% of claims

Medicare sources and data years

Education and affiliations

Medical schoolIndiana University School of Medicine
Graduation year2014
Medicare specialtyOphthalmology

Medical group

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$801.26 · 11 payments from 7 companies
  • 2024$492.95 · 13 payments from 8 companies

Top paying companies in 2025

What the 2025 payments were for

  • Consulting Fee$577.50 · 3 payments
  • Food and Beverage$204.45 · 7 payments
  • Entertainment$19.31 · 1 payment

Receiving payments does not imply wrongdoing. What Open Payments covers ·original records

Other Ophthalmology providers in Lakewood

All Ophthalmology providers in California →