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DR. WILLIAM RANDALL KNAPP O.D.
NPI 1437131927
Optometrist - Sports Vision in Upper Sandusky, OH

Active since November 18, 2005PECOS EnrolledAccepts Medicare Assignment
212 E WYANDOT AVE, UPPER SANDUSKY, OH 43351(419) 294-2421(419) 294-2499 Get Directions Write a Review

NPPES record last updated: August 21, 2008. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. William Randall Knapp O.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. WILLIAM RANDALL KNAPP O.D. (NPI 1437131927) is an individual sports vision provider in Upper Sandusky, Ohio, licensed in Ohio (4759/T1563) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS, is affiliated with Wyandot Memorial Hospital, and is a graduate of Ohio State University - College Of Optometry (1996).

NPPES Registry Identity

NPI1437131927
Entity TypeIndividualMale
Primary Taxonomy152WS0006X
Provider Legal NameDR. WILLIAM RANDALL KNAPPCredential: O.D.
Location Address212 E WYANDOT AVEUpper Sandusky, OH 43351-1432
Mailing AddressPo Box 540Upper Sandusky, OH 43351-0540 · (419) 294-2421 · Fax (419) 294-2499
Phone(419) 294-2421
Fax(419) 294-2499
Sole ProprietorNo
Medical School CMSOhio State University - College Of OptometryGraduated 1996
Enumeration DateNovember 18, 2005
Last NPPES UpdateAugust 21, 2008
✔ NPI 1437131927 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOptometrist · Sports VisionEye and Vision Services Providers
Taxonomy Code152WS0006X
License✔ Licensed in OH · 4759/T1563
Definition
An optometrist who offers services designed to care for unique vision care needs of athletes, which may include one of more of the following services: corrective vision care unique to a specific sporting environment; protective eyewear for the prevention of sports-related injuries; vision enhancement - which may include vision therapy and techniques to improve visual skills specific to the athlete's sport.
212 E WYANDOT AVE, Upper Sandusky, OH 43351
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Other Identifiers 3

Medicare UPINU64655
Medicaid2031661OH
Medicare PIN0816951OH

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Meridian, Ambetter Health and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. William Randall Knapp O.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID547394769
PECOS Enrollment IDI20100810000524
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show William Knapp reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Knapp Eyecare Center, Inc
Same address
Optometrist
212 E WYANDOT AVE
Upper Sandsky, OH 43351
  • Reassigned Medicare billing, Ohio enrollment
NPI 1265443907 (419) 294-2421

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 6

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Removal of cataract with insertion of prosthetic lens 66984
This is a procedure where a cloudy lens in your eye, known as a cataract, is removed. After removal, a clear artificial lens is inserted. This helps to restore your vision, enabling you to see clearly again.
1,421 services11 patients
Established patient complete exam of visual system 92014
An established patient complete exam of the visual system involves a thorough check of your eyes and vision. It assesses eye health, checks for diseases, and measures your ability to see clearly at different distances. It's a routine, non-invasive procedure.
174 services163 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
108 services61 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
62 services51 patients
New patient complete exam of visual system 92004
A new patient complete exam of the visual system is a thorough evaluation of your eyes and vision. It checks for any potential issues and assesses overall eye health. It includes tests for visual acuity, eye movement, and light response.
30 services30 patients
Exam of visual field with extended testing 92083
An extended visual field exam is a detailed test to evaluate your peripheral (side) vision. It helps to detect any potential blind spots which may not be noticeable in daily life. These could be caused by eye diseases like glaucoma, or neurological conditions.
11 services11 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Wyandot Memorial Hospital

Critical Access Hospitals · Upper Sandusky, OH
OwnershipGovernment - Hospital District or Authority
CMS Certification Number361329
Location885 North Sandusky AvenueUpper Sandusky, OH 43351 · Wyandot County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 43351 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$126.12 typical visit price
range $54.34 – $166.65
Typical copayment $31.53 (range $13.58 – $41.66)
Most-billed visit code 99204
Established Patient
$68.07 typical visit price
range $17.10 – $135.40
Typical copayment $17.01 (range $4.27 – $33.85)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. KIMBERLEY RENEE BARNES O.D.
Optometrist
212 E WYANDOT AVE
UPPER SANDUSKY, OH 43351
Wyandot County (419) 294-2421
KNAPP EYECARE CENTER, INC
Optometrist
212 E WYANDOT AVE
UPPER SANDSKY, OH 43351
Wyandot County (419) 294-2421
DR. WALLACE JOHN KNAPP O.D.
Optometrist
212 E WYANDOT AVE
UPPER SANDUSKY, OH 43351
Wyandot County (419) 294-2421

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Knapp's NPI number?

The NPI number for William Knapp is 1437131927. It was assigned to this individual provider in the NPPES registry on November 18, 2005.

Where is William Knapp located?

William Knapp practices at 212 E Wyandot Ave, Upper Sandusky, OH 43351. The listed phone number is (419) 294-2421.

What is William Knapp's specialty?

The primary specialty registered for this NPI is Optometrist, specializing in Sports Vision, with taxonomy code 152WS0006X.

Is William Knapp enrolled in Medicare?

Yes. William Knapp is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for William Knapp's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Knapp reassigns Medicare benefits to Knapp Eyecare Center, Inc (Upper Sandsky, OH). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for William Knapp's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does William Knapp accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Anthem Blue Cross and Blue Shield and Blue Cross Blue Shield of Wyoming and 15 other insurers list William Knapp as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is William Knapp affiliated with any hospitals?

According to CMS data, William Knapp is affiliated with Wyandot Memorial Hospital.

When was this NPI record last updated?

The NPPES record for William Knapp was last updated on August 21, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.