NPI age
20 years
Enumerated 2005-10-20
● Active
Type 1 · Individual
DR. Eric S Casillas, O.D.
Casillas is 1 of 529 optometrist providers in San Antonio and 1 of 7867 in Texas.
Primary specialty
Optometrist
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2013-12-26
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
20 years
↑ 5 yr above median (15 yr)
State licenses
1 state
5% of peers hold multiple states
Subspecialties
0
13% of peers hold subspecialties
NPI lifetime · 2005 → 2026
2005-10Enumerated in NPPES
2005
2026
Where they practice
Practice location
1327 Sw Military Dr
San Antonio, TX 782211538
Mailing address
1327 Sw Military Dr
San Antonio, TX 782211538
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...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (TX) | 041933502 |
Practice context
Part of a multi-provider practice. 2 other active providers share this practice address in NPPES.
Recently enumerated nearby: 10 new optometrist providers have been added in San Antonio in the last 180 days.
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Request a quote →How to verify this provider
- 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.