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Mazer Ricky Ally, M.D.

NPI 1902018666ActiveIndividual· Internal Medicine, Gastroenterology· Oceanside, CA

Internal Medicine, Gastroenterology (M.D.) in Oceanside, California, trained at George Washington University School of Medicine (class of 2006). In 2024 Medicare paid $311,034 for 554 patients, and Part D covered 910 of their prescriptions, 84% of them generic. Abbvie Inc. was the largest of 13 companies reporting payments in 2025, $66,212 in all, mostly speaking and faculty fees.

Overview

NPI1902018666
StatusActive
Entity typeIndividual
CredentialM.D.
Sole proprietorYes
NPI issuedMay 4, 2007
Last updated in NPPESOct 13, 2021
Certified by providerOct 13, 2021

Specialties and licenses

TaxonomyCodeLicenseState
Internal Medicine, Gastroenterology Primary207RG0100XA146924CA

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 4, 2026No match—
New York OMIG · Nov 4, 2026No match—
Ohio Medicaid · Nov 4, 2026No match—
Pennsylvania Medicheck · Nov 4, 2026No match—
Washington HCA · Nov 4, 2026No match—

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

Medicare

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

Medicare services in 2024

Medicare patients554
Services billed9,571 across 87 procedure codes
Paid by Medicare$311,034

Part D prescriptions in 2024

Prescriptions (claims)910 · 1,722 30-day fills
Patients342
Total drug cost$376,915
Generic share84% of claims

Medicare sources and data years

Education and affiliations

Medical schoolGeorge Washington University School of Medicine
Graduation year2006
Medicare specialtyGastroenterology
TelehealthOffers telehealth

Medical group

Hospital affiliations

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$66,212 · 94 payments from 13 companies
  • 2024$33,594 · 76 payments from 13 companies

Top paying companies in 2025

What the 2025 payments were for

  • Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$54,012 · 17 payments
  • Travel and Lodging$9,659 · 19 payments
  • Food and Beverage$2,542 · 58 payments

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

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