NPI Lens

Arleen Chang, MD

NPI 1679650501ActiveIndividual· Internal Medicine· Mountain View, CA

Internal Medicine (MD) in Mountain View, California, trained at University of California, Irvine, California College of Medicine (class of 1994). Part D covered 3,005 prescriptions written in 2024, 94% of them generic.

Overview

NPI1679650501
StatusActive
Entity typeIndividual
CredentialMD
Sole proprietorNo
NPI issuedOct 31, 2006
Last updated in NPPESJan 3, 2022

Specialties and licenses

TaxonomyCodeLicenseState
Internal Medicine Primary207R00000XA60478CA

About license numbers in NPPES

Exclusion screening

ListResultDetails
HHS-OIG LEIE · Nov 10, 2026No matchChecked by NPI and by name + state
North Carolina Medicaid · Nov 11, 2026No match—
New York OMIG · Nov 11, 2026No match—
Ohio Medicaid · Nov 11, 2026No match—
Pennsylvania Medicheck · Nov 11, 2026No match—
Washington HCA · Nov 11, 2026No match—

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

Medicare

Enrollment (PECOS)Enrolled Practitioner - Internal Medicine (CA)

Part D prescriptions in 2024

Prescriptions (claims)3,005 · 7,989 30-day fills
Patients397
Total drug cost$106,727
Generic share94% of claims

Medicare sources and data years

Education and affiliations

Medical schoolUniversity of California, Irvine, California College of Medicine
Graduation year1994
Medicare specialtyInternal Medicine

Medical group

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 physicians in Mountain View

All 134 internal medicine physicians in Mountain View · All internal medicine physicians in California