Doctor profile · Federal record
Dr. MARK WALKER, O.D.
Optometrist (CMS: OPTOMETRY) · ELKHART, IN
- NPI 1972731461
- Accepts Medicare
- MIPS 90.4 / 100 · 2023
- 17 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
2746 OLD US 20 W
ELKHART, IN 465141364
(574) 293-3545
fax (574) 522-0599
Credentials & registration
- NPI registered
- June 2009 — 17 yrs on file
- Profile last updated
- November 8, 2012
- Year of graduation
- 2009 — 17 yrs since
- Specialty taxonomy
- 152W00000X — NUCC code
- State license (1)
- Indiana #18003605A
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1972731461. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,974
Distinct HCPCS
9
Medicare allowed
$153,098
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
92014 |
Established patient complete exam of visual system | 505 | 466 | $118 | |
92133 |
Imaging of optic nerve | 329 | 306 | $34 | |
92012 |
Established patient problem focused exam of visual system | 230 | 158 | $84 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 222 | 214 | $119 | |
92134 |
Imaging of retina | 221 | 178 | $38 | |
92250 |
Photography of the retina | 215 | 181 | $33 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 116 | 89 | $83 | |
92083 |
Exam of visual field with extended testing | 93 | 85 | $55 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 43 | 43 | $155 |
In context: peer comparison
Among 4 peers in this city , average services per provider: 154. This provider delivers 13× the peer median.Open Payments
Industry payments received
All-time total
$532
Transactions
12
Manufacturers
8
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Apellis Pharmaceuticals, Inc. | 1 | $124.99 | |
| BIOTISSUE HOLDINGS INC. | 2 | $105.92 | |
| Ocular Therapeutix, Inc. | 1 | $90.95 | |
| Tarsus Pharmaceuticals, Inc. | 3 | $69.76 | |
| Glaukos Corporation | 1 | $68.29 | |
| Bausch & Lomb Americas Inc. | 2 | $37.69 | |
| Alcon Vision LLC | 1 | $18.89 | |
| Dompe US, Inc. | 1 | $15.39 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
897
Patients
286
Total drug cost
$229,786
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Latanoprost | Generic | 248 | 75 | $7,104 |
| Dorzolamide-Timolol (Dorzolamide Hcl/Timolol Maleat) | Brand | 140 | 38 | $4,232 |
| Timolol Maleate | Generic | 95 | 31 | $996 |
| Lumigan (Bimatoprost) | Brand | 87 | 30 | $56,679 |
| Prednisolone Acetate | Generic | 61 | 41 | $3,095 |
| Restasis (Cyclosporine) | Brand | 38 | 24 | $65,750 |
| Acyclovir | Generic | 33 | 0 | $535 |
| Travoprost | Generic | 28 | 0 | $6,991 |
| Fluorometholone | Generic | 27 | 13 | $1,522 |
| Tobramycin-Dexamethasone (Tobramycin/Dexamethasone) | Brand | 27 | 21 | $1,496 |