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Cecilia Tsang Kaesler, DO

NPI 1326092891ActiveIndividual· Internal Medicine· La Canada, CA

Internal Medicine (DO) in La Canada, California, trained at College of Osteo Med of the Pacific at Pomona (class of 1991). Their prescriptions cost Medicare Part D more than their services did: $318,908 for 2,525 claims, against $211,472 paid for services in 2024. Novo Nordisk Inc was the largest of 10 companies reporting payments in 2025, $1,128 in all, mostly food and beverage.

Overview

NPI1326092891
StatusActive
Entity typeIndividual
CredentialDO
Sole proprietorYes
NPI issuedMay 20, 2006
Last updated in NPPESSep 12, 2013

Specialties and licenses

TaxonomyCodeLicenseState
Internal Medicine Primary207R00000X20A6257CA

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)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients195
Services billed5,162 across 53 procedure codes
Paid by Medicare$211,472

Part D prescriptions in 2024

Prescriptions (claims)2,525 · 5,443 30-day fills
Patients170
Total drug cost$318,908
Generic share79% of claims

Medicare sources and data years

Education and affiliations

Medical schoolCollege of Osteo Med of the Pacific at Pomona
Graduation year1991
Medicare specialtyInternal Medicine
TelehealthOffers telehealth

Medical group

Hospital affiliations

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$1,128 · 45 payments from 10 companies
  • 2024$1,086 · 39 payments from 9 companies

Top paying companies in 2025

CompanyAmountPayments
Novo Nordisk Inc$306.116
Amgen Inc.$235.8615
Abbvie Inc.$212.5010
Lilly USA, LLC$124.125
Takeda Pharmaceuticals U.S.A., Inc.$77.323

What the 2025 payments were for

  • Food and Beverage$1,128 · 45 payments

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

Other Internal Medicine providers in La Canada

All Internal Medicine providers in California →