NPPES file of Aug 9, 2026

Nicholas Donald Klemen, M.D.

Surgical Oncology Physician · Durham, NC

Nicholas Donald Klemen, M.D. is a surgical oncology physician with a practice address in Durham, North Carolina, and NPI 1730474412, issued on Jun 10, 2011. Check the license (North Carolina 2025-04237, as entered in NPPES) on the North Carolina Medical Board; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1730474412
Name
Nicholas Donald Klemen
Credential
M.D.
Primary taxonomy
Surgical Oncology Physician 2086X0206X
License number
2025-04237 NC
Self-reported in NPPES; status is on the state search
Practice location
Duke University Medical Ctr, Durham, NC 27710
Phone
(812) 345-1341
Enumerated
Jun 10, 2011
Record last updated
Jan 8, 2026
Medicare enrollment
Enrolled (PECOS I20260325004032); accepts Medicare assignment
Medical or professional school
Indiana University School Of Medicine, 2011
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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8 nearest surgical oncology physician records → All 46 in North Carolina → Look up another NPI →

Also registered at Duke University Medical Ctr

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

  1. Thomas AberantHematology & Oncology Physician1932282175
  2. Lance Adams, PA-CPhysician Assistant1073940326
  3. Swati Agrawal, M.D.Internal Medicine Physician1922191188
  4. John AlexanderCardiovascular Disease Physician1831282094
  5. Patricia AllushuskiCertified Registered Nurse Anesthetist1538258090
  6. Lisa Amaya-Jackson, M.D.Psychiatry Physician1841373081

Verify Nicholas Donald Klemen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNorth Carolina Medical Board
    Search for license 2025-04237    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
Open the North Carolina license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Duke Health Integrated Practice IncDurham, NC

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

Nicholas Donald Klemen among 46 surgical oncology physician records in North Carolina

Nicholas Donald Klemen, M.D. is one of 46 surgical oncology physician records with a practice address in North Carolina. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 72% of them.

  • NPI issued2011 · 72% of these records are older, 22% newer
  • In a Medicare fileYes · 78% of these records are
  • In the CMS Doctors and Clinicians fileYes · 74% of these records are
  • Graduated2011 · median 2005 among the 34 with a school on file
  • Record last updated2026 · 41% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2086X0206X and a North Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Surgical Oncology Physician providers in North Carolina

There are 46 surgical oncology physician records in North Carolina.

All 46 in North Carolina → Every provider in Durham → Surgical Oncology Physician nationwide →

The 8 surgical oncology physician records with the nearest ZIP codes

  1. Jay Lee, MDDurham, NC 277101225474588
  2. George Leight, M.D.Durham, NC 277101063575835
  3. Allison Martin, MD, MPHDurham, NC 277101801230578
  4. Daniel NussbaumDurham, NC 277101942590047
  5. Randall Scheri, M.D.Durham, NC 277101871531624
  6. Kevin Shah, MDDurham, NC 277101255508107
  7. Michael Stang, MDDurham, NC 277101285830604
  8. Mathias Worni, MDDurham, NC 277101417290750

Common questions

What is Nicholas Donald Klemen, M.D.'s NPI number?

Nicholas Donald Klemen, M.D.'s National Provider Identifier (NPI) is 1730474412, issued on Jun 10, 2011. An NPI identifies a provider in billing; it is not a license.

Where is Nicholas Donald Klemen, M.D. located?

The NPPES record lists a practice address at Duke University Medical Ctr, Durham, NC, 27710. Phone: (812) 345-1341. Providers update this record themselves, so call before visiting.

How can I verify Nicholas Donald Klemen, M.D.'s license?

NPPES lists North Carolina license number 2025-04237, as entered by the provider. Search the North Carolina Medical Board at https://portal.ncmedboard.org/verification/search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.