NPI age
20 years
Enumerated 2005-08-12
● Active
Type 1 · Individual
DR. Ronald Lee Cox, M.D.
Cox is 1 of 44 allergy & immunology providers in Austin and 1 of 506 in Texas.
Primary specialty
Allergy & Immunology
Plus 1 subspecialty
Licensed in
TX, OH
2 states
Status
Active
No deactivations on record
Last NPPES update
2023-07-18
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 506 active allergy & immunology providers in Texas.
NPI age
20 years
≈ at median (19 yr)
State licenses
2 states
Top 90% — 9% of peers are multi-state
Subspecialties
0
28% of peers hold subspecialties
NPI lifetime · 2005 → 2026
2005-08Enumerated in NPPES
2005
2026
Where they practice
Practice location
6611 River Place Blvd Ste 100
Austin, TX 787301163
Mailing address
303 E Main St
Round Rock, TX 786645246
Additional practice locations
6 secondary locations on file with NPPES.
Location 2
5625 Eiger Rd Ste 160
Austin, TX 787358980
Location 3
12801 Shops Pkwy Ste 400
Bee Caves, TX 787386446
Location 4
5656 Bee Caves Rd Ste G201
West Lake Hills, TX 787465236
Location 5
303 E Main St
Round Rock, TX 786645246
Location 6
3101 Highway 71 E Ste 210
Bastrop, TX 786025157
Location 7
11762 Jollyville Rd
Austin, TX 787593937
Specialties
-
Allergy & Immunology PrimaryAn allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Selected examples of such conditions include asthma, anaphylaxis, rhinitis, eczema, and...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (OH) | 2103324 |
Multi-state credentialing: Licensed in 2 states. Useful context for credentialers building cross-state provider networks.
Practice context
Solo or small practice. No 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.