NPI age
19 years
Enumerated 2007-05-14
● Active
Type 1 · Individual
DR. William Ryan Butler, O.D.
Butler is 1 of 67 optometrist providers in Round Rock and 1 of 7867 in Texas.
Primary specialty
Optometrist
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2016-11-10
Source: monthly bulk 2026-05
Sole proprietor
Yes
Solo practice on file
How this provider compares
Across 7867 active optometrist providers in Texas.
NPI age
19 years
↑ 4 yr above median (15 yr)
State licenses
1 state
5% of peers hold multiple states
Subspecialties
0
13% of peers hold subspecialties
NPI lifetime · 2007 → 2026
2007-05Enumerated in NPPES
2007
2026
Where they practice
Practice location
1150 Ih 35 N Ste 500
Round Rock, TX 786814271
Mailing address
1150 Ih 35 N Ste 500
Round Rock, TX 786814271
Specialties
-
Optometrist PrimaryDoctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as...
Practice context
Solo or small practice. No other active providers share this practice address in NPPES. This provider is listed as a sole proprietor.
Recently enumerated nearby: 1 new optometrist provider has been added in Round Rock in the last 180 days.
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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.