Gawain Dyer, M.D.
NPI 1427286137 · Ophthalmology Physician · San Antonio, TX
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gawain Dyer, M.D. is a Ophthalmology Physician provider in San Antonio, TX (NPI 1427286137).
Provider details
- NPI number
- 1427286137
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- Q2275 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
16 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,292 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Complete Exam of Visual System92014 | 461 | $120 |
| Imaging of Retina92134 | 459 | $38 |
| Injection of Drug Into Eye67028 | 343 | $118 |
| Destruction of Leaking Blood Vessels of Retina Using Laser67228 | 29 | $316 |
Typical Medicare-allowed amounts for these services range $38–$316 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Afliberceptbrand: Eylea | 375 | 98 |
| Prednisolone Acetate | 131 | 96 |
| Latanoprost | 104 | 43 |
| Erythromycin Basebrand: Erythromycin | 98 | 59 |
| Faricimab-Svoabrand: Vabysmo | 72 | 16 |
| Timolol Maleate | 71 | 28 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 45 | 18 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,982 across 30 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-07-01
- Last updated
- 2018-08-09
Frequently asked questions
- What is Gawain Dyer's NPI number?
- Gawain Dyer's National Provider Identifier (NPI) is 1427286137, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gawain Dyer's specialty?
- Gawain Dyer is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Gawain Dyer located?
- Gawain Dyer's practice location on file with NPPES is 800 Mccullough Ave, San Antonio, TX 78215.
- What is Gawain Dyer's phone number?
- The practice phone number listed in the NPPES registry for Gawain Dyer is (210) 226-6169.
- Does Gawain Dyer accept Medicare?
- Gawain Dyer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gawain Dyer's NPI active?
- Yes — Gawain Dyer's NPI (1427286137) is active in the NPPES registry as of the last update on 2018-08-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.