Doctor profile · Federal record
Dr. Winston Chamberlain, MD, PHD
Cornea and External Diseases Specialist Physician (CMS: Ophthalmology) · Ophthalmology Physician · Ophthalmology Physician · Portland, OR
- NPI 1710108162
- Accepts Medicare
- MIPS 90.5 / 100 · 2023
- 24 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
3375 Sw Terwilliger Blvd
Portland, OR 972394146
(503) 494-3000
fax (503) 494-4286
Credentials & registration
- NPI registered
- May 2007 — 19 yrs on file
- Profile last updated
- April 9, 2018
- Year of graduation
- 2002 — 24 yrs since
- Specialty taxonomy
- 207WX0120X — NUCC code
- State licenses (2)
- Oregon #MD28180 · California #A89422
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1710108162. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
759
Distinct HCPCS
10
Medicare allowed
$72,396
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
92014 |
Established patient complete exam of visual system | 199 | 175 | $76 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 90 | 89 | $99 | |
76514 |
Ultrasound scan of cornea to determine thickness | 65 | 58 | $8 | |
92134 |
Imaging of retina | 57 | 46 | $26 | |
92012 |
Established patient problem focused exam of visual system | 56 | 40 | $52 | |
92025 |
Ct scan of cornea | 46 | 45 | $20 | |
92014 |
Established patient complete exam of visual system | 36 | 34 | $124 | |
92136 |
Measurement of corneal curvature and depth of eye | 31 | 22 | $31 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 26 | 23 | $146 | |
92285 |
Photography of content of eyes | 23 | 20 | $3 |
In context: peer comparison
Among 2 peers in Portland Cornea and External Diseases Specialist Physician, average services per provider: 45. This provider delivers 17× the peer median.Open Payments
Industry payments received
All-time total
$5,081
Transactions
4
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbvie INC. | 2 | $2,156.31 | |
| Oyster Point Pharma, INC. | 1 | $1,800.00 | |
| Glaukos Corporation | 1 | $1,125.00 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
757
Patients
300
Total drug cost
$86,582
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Prednisolone Acetate | Generic | 247 | 111 | $15,588 |
| Fluorometholone | Generic | 142 | 56 | $14,295 |
| Ofloxacin | Generic | 58 | 37 | $746 |
| Erythromycin (Erythromycin Base) | Brand | 37 | 15 | $402 |
| Dorzolamide-Timolol (Dorzolamide Hcl/Timolol Maleat) | Brand | 32 | 16 | $1,068 |
| Timolol Maleate | Generic | 32 | 17 | $229 |
| Brimonidine Tartrate | Generic | 27 | 11 | $200 |
| Restasis (Cyclosporine) | Brand | 26 | 12 | $22,520 |
| Valacyclovir (Valacyclovir Hcl) | Brand | 26 | 0 | $2,106 |
| Loteprednol Etabonate | Generic | 25 | 14 | $6,833 |
Frequently asked questions
What is Dr. Winston Chamberlain's medical specialty?
Dr. Winston Chamberlain practices Cornea and External Diseases Specialist Physician in Portland, OR.
Where does Dr. Winston Chamberlain practice?
Dr. Winston Chamberlain practices at 3375 Sw Terwilliger Blvd, Portland, OR 972394146. Office phone: 5034943000.
What is Dr. Winston Chamberlain's NPI?
Dr. Winston Chamberlain's National Provider Identifier (NPI) is 1710108162, issued by NPPES.
Does Dr. Winston Chamberlain accept Medicare assignment?
Yes. Dr. Winston Chamberlain accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Winston Chamberlain commonly perform?
Top Medicare-reported procedures in 2023: Established patient complete exam of visual system (HCPCS 92014); Established patient office or other outpatient visit (HCPCS 99214); Ultrasound scan of cornea to determine thickness (HCPCS 76514). Source: CMS Medicare Physician & Other Practitioners file.