Doctor profile · Federal record
Dr. William Knapp, O.D.
Sports Vision Optometrist (CMS: Optometry) · Upper Sandusky, OH
- NPI 1437131927
- Accepts Medicare
- 30 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
212 E Wyandot Ave
Upper Sandusky, OH 433511432
(419) 294-2421
fax (419) 294-2499 - Mailing address
-
Po Box 540
Upper Sandusky, OH 433510540
Credentials & registration
- NPI registered
- November 2005 — 21 yrs on file
- Profile last updated
- August 21, 2008
- Year of graduation
- 1996 — 30 yrs since
- Specialty taxonomy
- 152WS0006X — NUCC code
- State license (1)
- Ohio #4759/T1563
- Medicaid
- OH #2031661
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1437131927. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,942
Distinct HCPCS
7
Medicare allowed
$47,581
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
66984 |
Removal of cataract with insertion of prosthetic lens | 1,513 | 13 | $1 | |
92014 |
Established patient complete exam of visual system | 211 | 199 | $119 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 109 | 67 | $86 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 55 | 47 | $122 | |
92004 |
New patient complete exam of visual system | 20 | 20 | $141 | |
92083 |
Exam of visual field with extended testing | 18 | 18 | $58 | |
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 16 | 15 | $54 |
In context: peer comparison
Among 1 peers in Upper Sandusky Sports Vision Optometrist, average services per provider: 277. This provider delivers 7.0× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
215
Patients
58
Total drug cost
$28,085
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Latanoprost | Generic | 63 | 12 | $677 |
| Timolol Maleate | Generic | 31 | 0 | $340 |
| Tobramycin-Dexamethasone (Tobramycin/Dexamethasone) | Brand | 31 | 28 | $1,573 |
| Prednisolone Acetate | Generic | 26 | 18 | $889 |
| Lumigan (Bimatoprost) | Brand | 23 | 0 | $8,602 |
| Travoprost | Generic | 15 | 0 | $1,266 |
| Levobunolol Hcl | Generic | 13 | 0 | $91 |
| Restasis (Cyclosporine) | Brand | 13 | 0 | $14,647 |
Frequently asked questions
What is Dr. William Knapp's medical specialty?
Dr. William Knapp practices Sports Vision Optometrist in Upper Sandusky, OH.
Where does Dr. William Knapp practice?
Dr. William Knapp practices at 212 E Wyandot Ave, Upper Sandusky, OH 433511432. Office phone: 4192942421.
What is Dr. William Knapp's NPI?
Dr. William Knapp's National Provider Identifier (NPI) is 1437131927, issued by NPPES.
Does Dr. William Knapp accept Medicare assignment?
Yes. Dr. William Knapp accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. William Knapp commonly perform?
Top Medicare-reported procedures in 2023: Removal of cataract with insertion of prosthetic lens (HCPCS 66984); Established patient complete exam of visual system (HCPCS 92014); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.