NPPES file of Aug 9, 2026

Derek Paul De Grijs, M.D.

Vascular Surgery Physician · Franklin, TN

Derek Paul De Grijs, M.D. is a vascular surgery physician with a practice address in Franklin, Tennessee, and NPI 1275893638, issued on May 20, 2012. Check the license on the Tennessee Board of Medical Examiners; 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
1275893638
Name
Derek Paul De Grijs
Credential
M.D.
Primary taxonomy
Vascular Surgery Physician 2086S0129X
License number
26892 MS
Self-reported in NPPES; status is on the state search
Practice location
4601 Carothers Pkwy Ste 375, Franklin, TN 37067
Phone
(615) 791-4790
Enumerated
May 20, 2012
Record last updated
Nov 12, 2025
Medicare enrollment
Enrolled (PECOS I20200514000102); accepts Medicare assignment
Medical or professional school
University Of Tennessee, Hsc, College Of Medicine, 2008
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 4601 Carothers Pkwy Ste 375

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

  1. Paul Fleser, MDVascular Surgery Physician1346397130
  2. Sina Iranmanesh, M.D.Vascular Surgery Physician1457505810
  3. Jordan Mastalerz, PA-CPhysician Assistant1508417205
  4. Cary Pulliam, M.D.Vascular Surgery Physician1750327052
  5. Jennifer Ruff, PA-CSurgical Physician Assistant1790192797

Verify Derek Paul De Grijs in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTennessee Board of Medical ExaminersCheck 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 Tennessee license search

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41% more Medicare Part D claims than the average vascular surgery physician in 2024

284 Medicare Part D claims for 104 beneficiaries, against an average of 201 among the 3,936 providers of this specialty who prescribed in Part D. Brand-name drugs were 29% of claims. 29 claims were for opioids.

  1. Derek De Grijs284
  2. Specialty average201

Most prescribed

  1. Clopidogrel133 claims
  2. Eliquis47 claims
  3. Xarelto33 claims
  4. Hydrocodone-Acetaminophen12 claims

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: $1,453.11

27 payments; by number, the most common kind was food and beverage; the largest payer was Bard Peripheral Vascular, Inc. The 4,059 providers of this specialty with any payment received $6,178.00 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Derek De Grijs$1,453.11
  2. Specialty average$6,178.00

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

Bills Medicare through one group practice

  1. Advanced Diagnostic Imaging PCFranklin, TN

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

Derek Paul De Grijs among 130 vascular surgery physician records in Tennessee

Derek Paul De Grijs, M.D. is one of 130 vascular surgery physician records with a practice address in Tennessee. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 70% of them.

  • NPI issued2012 · 70% of these records are older, 24% newer
  • In a Medicare fileYes · 85% of these records are
  • In the CMS Doctors and Clinicians fileYes · 81% of these records are
  • Graduated2008 · median 2005 among the 105 with a school on file
  • Record last updated2025 · 44% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2086S0129X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Vascular Surgery Physician providers in Tennessee

There are 130 vascular surgery physician records in Tennessee.

The 8 vascular surgery physician records with the nearest ZIP codes

  1. Paul Fleser, MDFranklin, TN 370671346397130
  2. Sina Iranmanesh, M.D.Franklin, TN 370671457505810
  3. Cary Pulliam, M.D.Franklin, TN 370671750327052
  4. Bryan Fisher, MDHendersonville, TN 370751376752980
  5. Patrick Meacham, MDHendersonville, TN 370751164598876
  6. Tif Siragusa, MDHermitage, TN 370761215152236
  7. Larimore Warren, M.D., P.C.Lebanon, TN 370871255383766
  8. Christopher Lucas, D.O.Clarksville, TN 370401982632337

Common questions

What is Derek Paul De Grijs, M.D.'s NPI number?

Derek Paul De Grijs, M.D.'s National Provider Identifier (NPI) is 1275893638, issued on May 20, 2012. An NPI identifies a provider in billing; it is not a license.

Where is Derek Paul De Grijs, M.D. located?

The NPPES record lists a practice address at 4601 Carothers Pkwy Ste 375, Franklin, TN, 37067. Phone: (615) 791-4790. Providers update this record themselves, so call before visiting.

How can I verify Derek Paul De Grijs, M.D.'s license?

Search the Tennessee Board of Medical Examiners at https://www.tn.gov/health/licensure/me.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Derek Paul De Grijs, M.D. prescribe under Medicare Part D?

In 2024, Derek Paul De Grijs, M.D. had 284 Medicare Part D claims for 104 beneficiaries; the average among vascular surgery physician prescribers was 201. 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.