Doctor profile · Federal record
Dr. Sylvia Casas de Leon, MD
Cornea and External Diseases Specialist Physician (CMS: Ophthalmology) · Ophthalmology Physician · Student in an Organized Health Care Education/Training Program · Reston, VA
- NPI 1619362993
- Accepts Medicare
- 11 yrs in practice
- Licensed in 2 states
- Female
- Solo practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
1800 Town Center Dr Ste 317
Reston, VA 201903239
(703) 437-3900
fax (703) 437-9426 - Additional location
-
635 W 165Th St # 96
New York, NY 100323724
(212) 305-6709
fax (212) 305-5523
Credentials & registration
- NPI registered
- April 2015 — 11 yrs on file
- Profile last updated
- May 15, 2020
- Year of graduation
- 2015 — 11 yrs since
- Specialty taxonomy
- 207WX0120X — NUCC code
- State licenses (2)
- Virginia #0101268905 · New York #297778
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1619362993. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,430
Distinct HCPCS
10
Medicare allowed
$181,234
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 515 | 340 | $142 | |
92134 |
Imaging of retina | 285 | 276 | $46 | |
92133 |
Imaging of optic nerve | 95 | 90 | $41 | |
92014 |
Established patient complete exam of visual system | 93 | 93 | $142 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 69 | 69 | $185 | |
92083 |
Exam of visual field with extended testing | 65 | 59 | $73 | |
66984 |
Removal of cataract with insertion of prosthetic lens | 64 | 41 | $590 | |
92136 |
Measurement of corneal curvature and depth of eye | 48 | 46 | $54 | |
76519 |
Ultrasound scan to determine eye length and lens power | 47 | 46 | $77 | |
92250 |
Photography of the retina | 30 | 30 | $43 |
In context: peer comparison
Among 1 peers in Reston Cornea and External Diseases Specialist Physician, average services per provider: 95. This provider delivers 15× the peer median.Open Payments
Industry payments received
All-time total
$858
Transactions
26
Manufacturers
10
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Sun Pharmaceutical Industries INC. | 5 | $153.64 | |
| Alcon Vision LLC | 2 | $143.68 | |
| CooperVision INC. | 1 | $143.27 | |
| Bausch & Lomb Americas INC. | 6 | $122.96 | |
| Oyster Point Pharma, INC. | 4 | $91.79 | |
| Harrow Eye, LLC | 3 | $65.66 | |
| Tarsus Pharmaceuticals, INC. | 2 | $59.78 | |
| Dompe US, INC. | 1 | $31.15 | |
| Amgen INC. | 1 | $25.00 | |
| Biotissue Holdings INC. | 1 | $20.69 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
284
Patients
89
Total drug cost
$131,008
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Restasis (Cyclosporine) | Brand | 75 | 25 | $93,707 |
| Latanoprost | Generic | 66 | 27 | $1,263 |
| Prednisolone Acetate | Generic | 30 | 24 | $2,202 |
| Dorzolamide-Timolol (Dorzolamide Hcl/Timolol Maleat) | Brand | 25 | 0 | $1,031 |
| Cyclosporine | Generic | 19 | 0 | $14,294 |
| Erythromycin (Erythromycin Base) | Brand | 19 | 13 | $196 |
| Brimonidine Tartrate | Generic | 14 | 0 | $2,141 |
| Lumigan (Bimatoprost) | Brand | 13 | 0 | $10,361 |
| Alphagan P (Brimonidine Tartrate) | Brand | 12 | 0 | $2,966 |
| Zioptan (Tafluprost/Pf) | Brand | 11 | 0 | $2,850 |
Frequently asked questions
What is Dr. Sylvia Casas de Leon's medical specialty?
Dr. Sylvia Casas de Leon practices Cornea and External Diseases Specialist Physician in Reston, VA.
Where does Dr. Sylvia Casas de Leon practice?
Dr. Sylvia Casas de Leon practices at 1800 Town Center Dr Ste 317, Reston, VA 201903239. Office phone: 7034373900.
What is Dr. Sylvia Casas de Leon's NPI?
Dr. Sylvia Casas de Leon's National Provider Identifier (NPI) is 1619362993, issued by NPPES.
Does Dr. Sylvia Casas de Leon accept Medicare assignment?
Yes. Dr. Sylvia Casas de Leon accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Sylvia Casas de Leon commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Imaging of retina (HCPCS 92134); Imaging of optic nerve (HCPCS 92133). Source: CMS Medicare Physician & Other Practitioners file.