NPI age
19 years
Enumerated 2006-07-10
● Active
Type 1 · Individual
DR. Gary Ngoc Nguyen, O.D.
Nguyen is 1 of 1154 optometrist providers in Houston and 1 of 7867 in Texas.
Primary specialty
Optometrist
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2015-11-05
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
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 · 2006 → 2026
2006-07Enumerated in NPPES
2006
2026
Where they practice
Practice location
5601 Washington Ave
Houston, TX 770075134
Mailing address
5601 Washington Ave
Houston, TX 770075134
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 |
|---|---|---|
| 01 (TX) | 11616015 | CAQH |
| 05 (TX) | 1548182-03 |
Practice context
Part of a multi-provider practice. 1 other active provider shares this practice address in NPPES.
Recently enumerated nearby: 6 new optometrist providers have been added in Houston in the last 180 days.
See all →
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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.