NPI age
17 years
Enumerated 2008-10-17
● Active
Type 1 · Individual
John D Walker, MD, FAWM, FNAP
Walker is 1 of 284 emergency medicine providers in Austin and 1 of 6039 in Texas.
Primary specialty
Emergency Medicine
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2021-10-11
Source: monthly bulk 2026-05
Sole proprietor
Yes
Solo practice on file
How this provider compares
Across 6039 active emergency medicine providers in Texas.
NPI age
17 years
↑ 2 yr above median (15 yr)
State licenses
1 state
17% of peers hold multiple states
Subspecialties
0
43% of peers hold subspecialties
NPI lifetime · 2008 → 2026
2008-10Enumerated in NPPES
2008
2026
Where they practice
Practice location
1700 Stamford Ln
Austin, TX 787032938
Mailing address
1700 Stamford Ln
Austin, TX 787032938
Specialties
-
Emergency Medicine PrimaryAn emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department....
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: 6 new emergency medicine providers have been added in Austin in the last 180 days.
See all →
Provyx · Custom healthcare lists
Need all 6039 Emergency Medicine 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.