What is William Shaffer's specialty?

William Shaffer (NPI 1457451031) is a Medicare-billing provider whose primary specialty is Optometry in Oxnard, CA.

Where does William Shaffer practice?

William Shaffer practices in Oxnard, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1457451031.

How much does Medicare pay William Shaffer?

William Shaffer (NPI 1457451031) received approximately $13K in total Medicare Part B payments, serving 121 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1457451031

William ShafferO.D.

PRACTICESHAFFER VISION INC.See all providers at this practice →

OptometryOxnard, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

307

Unique beneficiaries

—

Total services

317

Distinct HCPCS

Medicare payment

$12K

Peer benchmark

Total Medicare services vs. 2,493 Optometry providers in CA — above median (cohort median 147).

PRESCRIBING · PART D · 2024

Total Rx claims

120

Beneficiaries

—

Total drug cost

$27K

Distinct drugs

Brand share

50.0%

Top prescribed drugs

Bimatoprost60 claims

Latanoprost42 claims

Brimonidine Tartrate18 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

No data available for this provider in 2024.

REFERRAL NETWORK

Where William Shaffer'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 · 3 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Unilab Corporation Clinical Laboratory · West Hills, CA	20	30
COMMUNITY MEMORIAL HEALTH SYSTEM	17	27

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
COMMUNITY MEMORIAL HEALTH SYSTEM	22	38
Unilab Corporation Clinical Laboratory · West Hills, CA	22	37
Yogender Garg Ophthalmology · Oxnard, CA	18	24

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