NPI age
12 years
Enumerated 2014-04-30
● Active
Type 1 · Individual
Brian Paul Schallenberg, M.D.
Schallenberg is 1 of 3 ophthalmology providers in Harlingen and 1 of 2155 in Texas.
Primary specialty
Ophthalmology
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2024-01-26
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
12 years
↓ 7 yr below median (19 yr)
State licenses
1 state
9% of peers hold multiple states
Subspecialties
0
31% of peers hold subspecialties
NPI lifetime · 2014 → 2026
2014-04Enumerated in NPPES
2014
2026
Where they practice
Practice location
2601 Veterans Dr Rm 2c-132
Harlingen, TX 785508942
Mailing address
2601 Veterans Dr Rm 2c-132
Harlingen, TX 785508942
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...
Practice context
Solo or small practice. No other active providers share this practice address in NPPES.
Provyx · Custom healthcare lists
Need all 2155 Ophthalmology providers in Texas?
Get the full list as a CSV with verified work emails, direct phones, and LinkedIn URLs.
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.