Doctor profile · Federal record
Dr. Robert Knox, M.D.
Ophthalmology Physician (CMS: Ophthalmology) · Portsmouth, OH
- NPI 1790782035
- Accepts Medicare
- MIPS 82.7 / 100 · 2023
- 26 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1534 11Th St
Portsmouth, OH 456624524
(740) 355-1161
fax (740) 355-1191
Credentials & registration
- NPI registered
- July 2005 — 21 yrs on file
- Profile last updated
- October 21, 2009
- Year of graduation
- 2000 — 26 yrs since
- Specialty taxonomy
- 207W00000X — NUCC code
- State license (1)
- Ohio #35-077740
- Medicaid
- OH #2187351
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1790782035. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
2,011
Distinct HCPCS
10
Medicare allowed
$229,277
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 337 | 287 | $121 | |
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 293 | 161 | $54 | |
92134 |
Imaging of retina | 216 | 84 | $38 | |
66984 |
Removal of cataract with insertion of prosthetic lens | 153 | 93 | $487 | |
92136 |
Measurement of corneal curvature and depth of eye | 150 | 105 | $37 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 121 | 121 | $157 | |
92250 |
Photography of the retina | 114 | 111 | $34 | |
92083 |
Exam of visual field with extended testing | 113 | 102 | $58 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 98 | 76 | $86 | |
92020 |
Exam of the internal drainage system of eye | 81 | 79 | $26 |
In context: peer comparison
Among 2 peers in Portsmouth Ophthalmology Physician, average services per provider: 141. This provider delivers 14× the peer median.Open Payments
Industry payments received
All-time total
$132
Transactions
7
Manufacturers
5
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Alcon Vision LLC | 2 | $43.09 | |
| Amgen INC. | 2 | $33.29 | |
| Tarsus Pharmaceuticals, INC. | 1 | $20.61 | |
| Janssen Biotech, INC. | 1 | $19.35 | |
| Abbvie INC. | 1 | $15.55 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
592
Patients
162
Total drug cost
$72,556
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Latanoprost | Generic | 309 | 66 | $4,941 |
| Dorzolamide-Timolol (Dorzolamide Hcl/Timolol Maleat) | Brand | 70 | 15 | $1,462 |
| Brimonidine Tartrate | Generic | 66 | 19 | $4,933 |
| Prednisolone Acetate | Generic | 35 | 30 | $1,596 |
| Xiidra (Lifitegrast) | Brand | 33 | 15 | $31,608 |
| Restasis (Cyclosporine) | Brand | 19 | 0 | $18,196 |
| Timolol Maleate | Generic | 19 | 0 | $242 |
| Polymyxin B Sul-Trimethoprim (Polymyxin B Sulf/Trimethoprim) | Brand | 18 | 17 | $164 |
| Dorzolamide Hcl | Generic | 12 | 0 | $161 |
| Tyrvaya (Varenicline Tartrate) | Brand | 11 | 0 | $9,252 |
Hospital affiliations
Frequently asked questions
What is Dr. Robert Knox's medical specialty?
Dr. Robert Knox practices Ophthalmology Physician in Portsmouth, OH.
Where does Dr. Robert Knox practice?
Dr. Robert Knox practices at 1534 11Th St, Portsmouth, OH 456624524. Office phone: 7403551161.
What is Dr. Robert Knox's NPI?
Dr. Robert Knox's National Provider Identifier (NPI) is 1790782035, issued by NPPES.
Does Dr. Robert Knox accept Medicare assignment?
Yes. Dr. Robert Knox accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Robert Knox commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99212); Imaging of retina (HCPCS 92134). Source: CMS Medicare Physician & Other Practitioners file.