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.
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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.