Doctor profile · Federal record
Dr. Brett Gerwin, M.D.
Ophthalmology Physician (CMS: Ophthalmology) · Retina Specialist (Ophthalmology) Physician · Ophthalmology Physician · Chattanooga, TN
- NPI 1306992003
- Accepts Medicare
- MIPS 97.3 / 100 · 2023
- 19 yrs in practice
- Licensed in 2 states
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
979 E 3Rd St, Suite 230
Chattanooga, TN 374032136
(423) 521-2820
fax (423) 602-5594
Credentials & registration
- NPI registered
- January 2007 — 19 yrs on file
- Profile last updated
- November 11, 2021
- Year of graduation
- 2007 — 19 yrs since
- Specialty taxonomy
- 207W00000X — NUCC code
- State licenses (2)
- Tennessee #45994 · Alabama #26155
- Medicaid
- TN #1517997
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1306992003. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
5,440
Distinct HCPCS
10
Medicare allowed
$938,608
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
92134 |
Imaging of retina | 1,466 | 468 | $38 | |
67028 |
Injection of drug into eye | 1,144 | 195 | $113 | |
J2778 |
Injection, ranibizumab, 0.1 mg | 880 | 28 | $228 | |
J9035 |
Injection, bevacizumab, 10 mg | 759 | 134 | $71 | |
J0178 |
Injection, aflibercept, 1 mg | 545 | 39 | $801 | |
92014 |
Established patient complete exam of visual system | 293 | 240 | $118 | |
92250 |
Photography of the retina | 105 | 94 | $33 | |
92004 |
New patient complete exam of visual system | 96 | 96 | $140 | |
92012 |
Established patient problem focused exam of visual system | 80 | 53 | $84 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 45 | 43 | $85 |
In context: peer comparison
Among 9 peers in Chattanooga Ophthalmology Physician, average services per provider: 160. This provider delivers 34× the peer median.Open Payments
Industry payments received
All-time total
$139
Transactions
6
Manufacturers
4
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Regeneron Healthcare Solutions, INC. | 2 | $47.33 | |
| Genentech USA, INC. | 2 | $46.35 | |
| Apellis Pharmaceuticals, INC. | 1 | $26.23 | |
| Astellas Pharma US INC | 1 | $19.05 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
170
Patients
41
Total drug cost
$4,421
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Prednisolone Acetate | Generic | 68 | 28 | $2,430 |
| Ketorolac Tromethamine | Generic | 36 | 13 | $835 |
| Dorzolamide-Timolol (Dorzolamide Hcl/Timolol Maleat) | Brand | 20 | 0 | $244 |
| Atropine Sulfate | Generic | 12 | 0 | $464 |
| Latanoprost | Generic | 12 | 0 | $100 |
| Brimonidine Tartrate | Generic | 11 | 0 | $107 |
| Ofloxacin | Generic | 11 | 0 | $240 |
Hospital affiliations
Frequently asked questions
What is Dr. Brett Gerwin's medical specialty?
Dr. Brett Gerwin practices Ophthalmology Physician in Chattanooga, TN.
Where does Dr. Brett Gerwin practice?
Dr. Brett Gerwin practices at 979 E 3Rd St, Chattanooga, TN 374032136. Office phone: 4235212820.
What is Dr. Brett Gerwin's NPI?
Dr. Brett Gerwin's National Provider Identifier (NPI) is 1306992003, issued by NPPES.
Does Dr. Brett Gerwin accept Medicare assignment?
Yes. Dr. Brett Gerwin accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Brett Gerwin commonly perform?
Top Medicare-reported procedures in 2023: Imaging of retina (HCPCS 92134); Injection of drug into eye (HCPCS 67028); Injection, ranibizumab, 0.1 mg (HCPCS J2778). Source: CMS Medicare Physician & Other Practitioners file.