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Robert Chang, M.D.

NPI 1992894885ActiveIndividual· Internal Medicine, Nephrology· Corona, CA

Internal Medicine, Nephrology (M.D.) in Corona, California, trained at Boston University School of Medicine (class of 2002). Their prescriptions cost Medicare Part D more than their services did: $139,900 for 1,509 claims, against $6,360 paid for services in 2024.

Overview

NPI1992894885
StatusActive
Entity typeIndividual
CredentialM.D.
Sole proprietorNo
NPI issuedOct 11, 2006
Last updated in NPPESNov 29, 2021

Specialties and licenses

TaxonomyCodeLicenseState
Internal Medicine, Nephrology Primary207RN0300XA85088CA

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 - Nephrology (CA)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients31
Services billed73 across 13 procedure codes
Paid by Medicare$6,360

Part D prescriptions in 2024

Prescriptions (claims)1,509 · 4,318 30-day fills
Patients354
Total drug cost$139,900
Generic share91% of claims

Medicare sources and data years

Education and affiliations

Medical schoolBoston University School of Medicine
Graduation year2002
Medicare specialtyNephrology
Secondary specialtiesInternal Medicine
TelehealthOffers telehealth

Medical group

Hospital affiliation

Other facilities

Source: CMS Care Compare

Industry payments (Open Payments)

None reported for 2025 or 2024.

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

Other Internal Medicine, Nephrology providers in Corona

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