NPI age
4 years
Enumerated 2021-07-13
● Active
Type 1 · Individual
Marc Duke, AGCNS-BC
Duke is 1 of 38 clinical nurse specialist providers in Austin and 1 of 159 in Texas.
Primary specialty
Clinical Nurse Specialist
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2025-08-12
Source: monthly bulk 2026-05
Sole proprietor
Yes
Solo practice on file
How this provider compares
Across 159 active clinical nurse specialist providers in Texas.
NPI age
4 years
↓ 10 yr below median (14 yr)
State licenses
1 state
1% of peers hold multiple states
Subspecialties
0
25% of peers hold subspecialties
NPI lifetime · 2021 → 2026
2021-07Enumerated in NPPES
2021
2026
Where they practice
Practice location
1201 W 38th St
Austin, TX 787051006
Mailing address
6003 Marilyn Dr
Austin, TX 787574426
Additional practice locations
1 secondary location on file with NPPES.
Location 2
4681 College Park Dr
Round Rock, TX 786651526
Specialties
-
Clinical Nurse Specialist PrimaryA registered nurse who, through a graduate degree program in nursing, or through a formal post-basic education program or continuing education courses and clinical experience, is expert in a specialty area of nursing practice within one...
Practice context
Part of a multi-provider practice. 195 other active providers share this practice address in NPPES.
Provyx · Custom healthcare lists
Need all 159 Clinical Nurse Specialist providers in Texas?
Provyx verifies the list to your scope. Business emails and direct lines are looked up at delivery, validated, and not stored.
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.