What is William Simpson's specialty?

William Simpson (NPI 1689860801) is a Medicare-billing provider whose primary specialty is Orthopaedic Surgery in Los Angeles, CA.

Where does William Simpson practice?

William Simpson practices in Los Angeles, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1689860801.

How much does Medicare pay William Simpson?

Medicare Part B utilization, prescribing (Part D), MIPS quality scores, and industry payments for William Simpson (NPI 1689860801) are detailed on this CareTrace profile.

PROVIDER PROFILE · NPI 1689860801

William Simpson

Orthopaedic SurgeryLos Angeles, CAI

MEDICARE UTILIZATION · PART B · 2024

No data available for this provider in 2024.

PRESCRIBING · PART D · 2024

No data available for this provider in 2024.

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 Simpson'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). 10 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
LABS-ALL, INC	65	215
KOHAN, MARIO	63	477
John Kim Podiatry · Los Angeles, CA	49	107
Yaming Shi Anesthesiology · Hawaiian Gardens, CA	25	54
Beatriz Tamayo Internal Medicine · Los Angeles, CA	19	53
Moustafa Alamy Gastroenterology · Paramount, CA	15	35
Mara Coloma General Practice · Huntington Park, CA	15	53
ATTENTIVE SERVICES HOME HEALTH, INC.	11	17
NAVAS, RICARDO	11	22
GITLIN, JAMES	11	20

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