NPI age
16 years
Enumerated 2009-05-28
● Active
Type 1 · Individual
Katherine Alison Sides, MD
Sides is 1 of 16 emergency medicine providers in San Marcos and 1 of 6039 in Texas.
Primary specialty
Emergency Medicine
Plus 1 subspecialty
Licensed in
TX, NC
2 states
Status
Active
No deactivations on record
Last NPPES update
2019-03-05
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
16 years
≈ at median (15 yr)
State licenses
2 states
Top 82% — 17% of peers are multi-state
Subspecialties
1
In the 43% of peers with subspecialties
NPI lifetime · 2009 → 2026
2009-05Enumerated in NPPES
2009
2026
Where they practice
Practice location
1301 Wonder World Dr, Central Texas Medical Center
San Marcos, TX 786667533
Mailing address
2105 Goodrich Ave Apt 6
Austin, TX 787044087
Additional practice locations
1 secondary location on file with NPPES.
Location 2
12221 N Mopac Expy
Austin, TX 787582401
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....
-
Student in an Organized Health Care Education/Training ProgramAn individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.
Practice context
Part of a multi-provider practice. 62 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.