What is William Knapp's specialty?

William Knapp (NPI 1437131927) is a Medicare-billing provider whose primary specialty is Optometry in Upper Sandusky, OH.

Where does William Knapp practice?

William Knapp practices in Upper Sandusky, OH, based on the location reported in the CMS Medicare provider datasets for NPI 1437131927.

How much does Medicare pay William Knapp?

William Knapp (NPI 1437131927) received approximately $31K in total Medicare Part B payments, serving 247 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1437131927

William KnappO.D.

OptometryUpper Sandusky, OHI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

327

Unique beneficiaries

—

Total services

1,806

Distinct HCPCS

Medicare payment

$29K

Peer benchmark

Total Medicare services vs. 1,348 Optometry providers in OH — top quintile (cohort median 357).

PRESCRIBING · PART D · 2024

Total Rx claims

197

Beneficiaries

—

Total drug cost

$9K

Distinct drugs

Brand share

33.5%

Top prescribed drugs

Latanoprost55 claims

Tobramycin/Dexamethasone46 claims

Prednisolone Acetate37 claims

Timolol Maleate27 claims

Bimatoprost20 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.

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (1)

CCN 361329

Hospital

REFERRAL NETWORK

Where William Knapp'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
WYANDOT MEMORIAL HOSPITAL	39	100
Stephen Orr Ophthalmology · Findlay, OH	15	76

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
WYANDOT MEMORIAL HOSPITAL	44	120
Stephen Orr Ophthalmology · Findlay, OH	16	62
CISAR, NORMAN	13	31

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