NPI age
19 years
Enumerated 2006-12-04
● Active
Type 1 · Individual
MRS. Barbara Ann Callahan, RN, CRNFA
Callahan is 1 of 10 registered nurse providers in Austin and 1 of 434 in Texas.
Primary specialty
Registered Nurse
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2007-07-09
Source: monthly bulk 2026-05
Sole proprietor
Yes
Solo practice on file
How this provider compares
Across 434 active registered nurse providers in Texas.
NPI age
19 years
↑ 5 yr above median (14 yr)
State licenses
1 state
2% of peers hold multiple states
Subspecialties
0
9% of peers hold subspecialties
NPI lifetime · 2006 → 2026
2006-12Enumerated in NPPES
2006
2026
Where they practice
Practice location
14006 Hunters Pass
Austin, TX 787343316
Mailing address
Po Box 342693
Austin, TX 787340045
Specialties
-
Registered Nurse PrimaryA perioperative registered nurse who works in collaboration with the surgeon and other health care team members to achieve optimal outcomes. The RNFA has acquired the necessary knowledge, judgment, and skills specific to the expanded...
Practice context
Solo or small practice. No other active providers share this practice address in NPPES. This provider is listed as a sole proprietor.
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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.