What is William Park's specialty?

William Park (NPI 1821002288) is a Medicare-billing provider whose primary specialty is Anesthesiology in Garden Grove, CA.

Where does William Park practice?

William Park practices in Garden Grove, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1821002288.

How much does Medicare pay William Park?

William Park (NPI 1821002288) received approximately $319K in total Medicare Part B payments, serving 208 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1821002288

William ParkM.D.

PRACTICEJOONG Y PARK M D MEDICAL CORPSee all providers at this practice →

AnesthesiologyGarden Grove, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,227

Unique beneficiaries

—

Total services

8,692

Distinct HCPCS

Medicare payment

$313K

Peer benchmark

Total Medicare services vs. 4,547 Anesthesiology providers in CA — top quintile (cohort median 182).

PRESCRIBING · PART D · 2024

Total Rx claims

585

Beneficiaries

—

Total drug cost

$58K

Distinct drugs

Brand share

27.9%

Top prescribed drugs

Icosapent Ethyl46 claims

Azithromycin46 claims

Rosuvastatin Calcium43 claims

Levocetirizine Dihydrochloride33 claims

Amlodipine Besylate31 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where William Park's patients come from & go

Directional shared-patient flow from Medicare claims — who sends patients to this provider (inbound) and where this provider's patients go next (outbound). 2 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
PIH HEALTH DOWNEY HOSPITAL	46	63
Lindsay Zamis Dellamaggiora Pathology · Downey, CA	21	28

Refers patients to

Outbound — where patients go next

No outbound pairs above the suppression threshold.

Source: CMS Physician Shared Patient Patterns (30-day window, Medicare FFS). Direction = a beneficiary seen by the first provider, then the second, within 30 days; a proxy for referral, not a documented referral. Pairs with fewer than 11 shared beneficiaries are suppressed.

CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore

OIG/SAM exclusion screening, sanctions history

Healthparse Signals

Monitor this provider for changes — dated NPI change events