NPPES file of Aug 9, 2026

Marc Duke, AGCNS-BC

Clinical Nurse Specialist · Austin, TX

Marc Duke, AGCNS-BC is a clinical nurse specialist with a practice address in Austin, Texas, and NPI 1659943322, issued on Jul 13, 2021. Check the license (Texas 1047212, as entered in NPPES) with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1659943322
Name
Marc Duke
Credential
AGCNS-BC
Primary taxonomy
Clinical Nurse Specialist 364S00000X
License number
1047212 TX
Self-reported in NPPES; status is on the state search
Practice location
1201 W 38TH St, Austin, TX 78705
Phone
(512) 324-1000
Enumerated
Jul 13, 2021
Record last updated
Aug 12, 2025
Medicare enrollment
Enrolled (PECOS I20210803002221); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1201 W 38TH St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Steven Alexander, MDCardiovascular Disease Physician1306225784
  2. Laura Anderson, NNPNeonatal Nurse Practitioner1952355604
  3. Ogechi AnyanwuStudent in an Organized Health Care Education/Training Program1891621074
  4. Nicole Armstrong-Gurule, LCSWClinical Social Worker1316481849
  5. Hala Ashraf, DOEmergency Medicine Physician1871090027
  6. Teresa Bailey, RNC, NNPNeonatal Nurse Practitioner1407870421

Verify Marc Duke in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Texas board licenses this profession
    Search for license 1047212
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Texas license search

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98% fewer Medicare Part D claims than the average clinical nurse specialist in 2024

18 Medicare Part D claims, against an average of 957 among the 361 providers of this specialty who prescribed in Part D.

  1. Marc Duke18
  2. Specialty average957

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $191.62

3 payments; by number, the most common kind was food and beverage; the largest payer was Scpharmaceuticals Inc. The 457 providers of this specialty with any payment received $871.23 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Marc Duke$191.62
  2. Specialty average$871.23

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Jason Martin Medical Consulting LLCElgin, TX
  2. Usacs Integrated Acute Care Services OF Texas, PLLCCedar Park, TX

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Marc Duke among 151 clinical nurse specialist records in Texas

Marc Duke, AGCNS-BC is one of 151 clinical nurse specialist records with a practice address in Texas. 53% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 85% of them.

  • NPI issued2021 · 85% of these records are older, 11% newer
  • In a Medicare fileYes · 53% of these records are
  • In the CMS Doctors and Clinicians fileYes · 36% of these records are
  • Graduated2021 · median 2016 among the 54 with a school on file
  • Record last updated2025 · 64% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 364S00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Clinical Nurse Specialist providers in Texas

There are 151 clinical nurse specialist records in Texas.

The 8 clinical nurse specialist records with the nearest ZIP codes

  1. Philip Chang, RN, CNSAustin, TX 787051902282221
  2. Gregory Greenberg, AGCNS-BCAustin, TX 787051083267702
  3. Carina Rew, RN, BSN, MSN, AG-CNSAustin, TX 787051104308188
  4. Judith Chedville, RN, ACNS-BCAustin, TX 787041336497650
  5. Thealynn Wells, APRN, AGCNS-BCAustin, TX 787041831875780
  6. Elena Cosenza, CNSAustin, TX 787021538644737
  7. Floyd Butz, MSN, RN, AGCNS-BCAustin, TX 787011841886066
  8. Gremar CorpuzAustin, TX 787011093372955

Common questions

What is Marc Duke, AGCNS-BC's NPI number?

Marc Duke, AGCNS-BC's National Provider Identifier (NPI) is 1659943322, issued on Jul 13, 2021. An NPI identifies a provider in billing; it is not a license.

Where is Marc Duke, AGCNS-BC located?

The NPPES record lists a practice address at 1201 W 38TH St, Austin, TX, 78705. Phone: (512) 324-1000. Providers update this record themselves, so call before visiting.

How can I verify Marc Duke, AGCNS-BC's license?

NPPES lists Texas license number 1047212, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.

How much does Marc Duke, AGCNS-BC prescribe under Medicare Part D?

In 2024, Marc Duke, AGCNS-BC had 18 Medicare Part D claims; the average among clinical nurse specialist prescribers was 957. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.