Dr. William Flynn, M.D., O.D.
What this data tells you about Dr. Flynn
Dr. William Flynn is a glaucoma specialist physician in San Antonio, TX, with 20 years of NPI registration. Based on federal Medicare data, Dr. Flynn performed 9,145 Medicare services across 7,700 unique beneficiaries.
Between the years covered by Open Payments, Dr. Flynn received a total of $865 from 12 pharmaceutical and/or device companies across 34 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in glaucoma specialist (ophthalmology) physician. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Flynn is Very High — reflecting how much public federal data is available about this provider. This is not a quality rating. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
Medicare Practice Summary
Medicare Utilization ↗Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Eye exam, established patient, focused A limited examination of the visual system for an existing patient. The provider focuses on a specific eye-related concern or symptom. |
2,013 | $59 | $100 |
| Comprehensive eye exam, established patient A comprehensive examination of the visual system performed for a patient who has previously been seen by the provider. |
1,624 | $80 | $145 |
| Visual field test, extended A test that maps your complete field of vision to detect blind spots or peripheral vision loss. Extended testing provides a more detailed assessment than a standard visual field exam. |
1,271 | $42 | $110 |
| Retinal photography (fundus photo) This procedure involves taking photographs of the retina, the light-sensitive tissue at the back of the eye. It is used to document the condition of the eye's interior structures. |
1,166 | $24 | $115 |
| Optic nerve imaging (OCT scan) Imaging of the optic nerve. |
1,089 | $24 | $80 |
| Retinal imaging (OCT scan) This procedure involves imaging the retina to visualize its structure. It is used to examine the back of the eye. |
440 | $28 | $80 |
| Eye drainage system examination An examination of the internal drainage system of the eye to assess how fluid flows and drains from the eye. |
394 | $18 | $60 |
| Corneal topography and eye depth measurement This procedure measures the curvature and depth of the cornea, the clear front surface of the eye. |
173 | $29 | $150 |
| Cataract surgery with lens implant Surgical removal of the clouded natural lens of the eye and replacement with an artificial prosthetic lens to restore vision. |
156 | $371 | $1,800 |
| Comprehensive eye exam, new patient A comprehensive examination of the visual system performed for a new patient. |
143 | $95 | $195 |
| Laser repair to improve eye fluid flow A laser procedure used to enhance the drainage of fluid within the eye. |
121 | $182 | $886 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
102 | $78 | $145 |
| Laser removal of recurring cataract A laser procedure to remove a recurring cataract within the lens capsule. |
96 | $241 | $833 |
| Ultrasound scan of cornea to determine thickness An ultrasound procedure used to measure the thickness of the cornea. |
96 | $7 | $35 |
| CT scan of cornea A computed tomography scan used to create detailed images of the cornea, the clear front part of the eye. |
79 | $22 | $100 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
26 | $65 | $100 |
| Ultrasound of eye tissue and structures A diagnostic imaging test that uses sound waves to create pictures of the eye's internal tissues and structures. |
25 | $30 | $202 |
| Imaging of front third of eye Imaging of the front third of the eye. |
25 | $20 | $60 |
| Laser destruction of lens tissue A procedure that uses a laser to destroy or remove tissue within the eye's lens. |
21 | $249 | $1,100 |
| Incision to improve eye fluid flow A surgical procedure involving an incision to enhance the drainage of fluid within the eye. |
20 | $633 | $1,800 |
| Eye fluid drainage device insertion A surgical procedure to insert a device into the eye to help drain excess fluid and reduce pressure. |
20 | $755 | $2,500 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
16 | $111 | $200 |
| Eye shunt creation to improve fluid flow A surgical procedure to create a new drainage pathway for fluid within the eye. This helps regulate internal eye pressure by improving the natural flow of aqueous humor. |
15 | $817 | $2,500 |
| Eyelash removal with forceps This procedure involves the manual removal of eyelashes using forceps. It is a mechanical extraction method performed on the eyelid area. |
14 | $13 | $143 |
Industry Payment Transparency
Open Payments through 2024 ↗Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
Payments by company (2024)
Associated products mentioned in payments ›
Most payments (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This measures how much public data is available about a provider — not how good they are. How we calculate this →
Summary
Dr. Flynn is a mixed practice specialist, with above-average Medicare volume (top 7% in TX), with low-engagement industry engagement, with 20 years of NPI registration.
This summary is auto-generated from federal data. It describes data availability and patterns — not clinical quality. Read our methodology →
Frequently Asked Questions
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All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. The Transparency Score measures data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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