NPI age
16 years
Enumerated 2009-09-24
● Active
Type 1 · Individual
MS. Janet Ruth Marquart, LCSW
Marquart is 1 of 1894 social worker providers in Austin and 1 of 12911 in Texas.
Primary specialty
Social Worker
Plus 2 subspecialties
Licensed in
TX, CA, CO
3 states
Status
Active
No deactivations on record
Last NPPES update
2012-10-22
Source: monthly bulk 2026-05
Sole proprietor
Yes
Solo practice on file
How this provider compares
Across 12911 active social worker providers in Texas.
NPI age
16 years
↑ 9 yr above median (7 yr)
State licenses
3 states
Top 92% — 7% of peers are multi-state
Subspecialties
0
19% of peers hold subspecialties
NPI lifetime · 2009 → 2026
2009-09Enumerated in NPPES
2009
2026
Where they practice
Practice location
4131 Spicewood Springs Rd, L4
Austin, TX 787598661
Mailing address
8888 Tallwood Dr Apt 1108
Austin, TX 787597590
Specialties
-
Social Worker PrimaryA social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be...
Practice context
Part of a multi-provider practice. 139 other active providers share this practice address in NPPES.
Recently enumerated nearby: 68 new social worker providers have been added in Austin in the last 180 days.
See all →
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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.