NPI Lens

William Byung Ho Park, M.D.

NPI 1821002288ActiveIndividual· Anesthesiology· Garden Grove, CA

Anesthesiology (M.D.) with Arash Esmailzadegan MD Inc, practicing in Garden Grove, California. In 2024 Medicare paid $319,285 for 208 patients, and Part D covered 934 of their prescriptions, 79% of them generic.

Overview

NPI1821002288
StatusActive
Entity typeIndividual
CredentialM.D.
Sole proprietorYes
NPI issuedJul 28, 2006
Last updated in NPPESAug 13, 2008

Specialties and licenses

TaxonomyCodeLicenseState
Anesthesiology Primary207L00000XA52866CCA

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 - Anesthesiology (CA)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients208
Services billed8,793 across 41 procedure codes
Paid by Medicare$319,285

Part D prescriptions in 2024

Prescriptions (claims)934 · 1,327 30-day fills
Patients73
Total drug cost$109,389
Generic share79% of claims

Medicare sources and data years

Education and affiliations

Graduation year1979
Medicare specialtyAnesthesiology

Medical group

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 anesthesiologists in Garden Grove

All 29 anesthesiologists in Garden Grove · All anesthesiologists in California