NPI age
20 years
Enumerated 2006-01-06
● Active
Type 1 · Individual
DR. William John Flynn, M.D., O.D.
Flynn is 1 of 207 ophthalmology providers in San Antonio and 1 of 2155 in Texas.
Primary specialty
Ophthalmology
Plus 1 subspecialty
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2020-08-25
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 2155 active ophthalmology providers in Texas.
NPI age
20 years
≈ at median (19 yr)
State licenses
1 state
9% of peers hold multiple states
Subspecialties
1
In the 31% of peers with subspecialties
NPI lifetime · 2006 → 2026
2006-01Enumerated in NPPES
2006
2026
Where they practice
Practice location
5430 Fredericksburg Rd, Suite 100
San Antonio, TX 78229
Mailing address
5430 Fredericksburg Rd, Suite 100
San Antonio, TX 782293539
Specialties
-
Ophthalmology PrimaryAn ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual...
-
OphthalmologyAn ophthalmologist who specializes in the treatment of glaucoma and other disorders related to increased intraocular pressure and optic nerve damage. This specialty involves the medical and surgical treatment of these conditions.
Identifiers
| Type | Value | Notes |
|---|---|---|
| 01 (TX) | 8M2751 | BLUE CROSS BLUE SHIELD |
| 05 (TX) | 181794202 | |
| 05 (TX) | 181794201 |
Practice context
Part of a multi-provider practice. 26 other active providers share this practice address in NPPES.
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- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
- Check the state license is currently active.State licensing boards publish current status; NPPES does not.
- Confirm payer enrollment if billing.NPI presence does not guarantee active enrollment with Medicare, Medicaid, or commercial payers.