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Les T. Sandknop, D.O.

NPI 1336139807ActiveIndividual· Family Medicine· Rockwall, TX

Family Medicine (D.O.) in Rockwall, Texas, trained at At Still University of Health Sciences, College of Osteo Med, Kirksville (class of 1978). 1,260 Medicare patients in 2024, $646,435 paid; nearly all of their 14,668 Part D prescriptions were generic (90%). Axsome Therapeutics, Inc. was the largest of 27 companies reporting payments in 2025, $2,429 in all, mostly food and beverage.

Overview

NPI1336139807
StatusActive
Entity typeIndividual
CredentialD.O.
Sole proprietorNo
NPI issuedOct 26, 2005
Last updated in NPPESNov 8, 2018

Specialties and licenses

TaxonomyCodeLicenseState
Family Medicine Primary207Q00000XF5359TX

About license numbers in NPPES

Exclusion screening

ListResultDetails
HHS-OIG LEIE · Nov 10, 2026No matchChecked by NPI and by name + state
North Carolina Medicaid · Nov 11, 2026No match—
New York OMIG · Nov 11, 2026No match—
Ohio Medicaid · Nov 11, 2026No match—
Pennsylvania Medicheck · Nov 11, 2026No match—
Washington HCA · Nov 11, 2026No match—

Official OIG search · How matching works ·Bulk check a roster

Medicare

Enrollment (PECOS)Enrolled Practitioner - Family Practice (TX)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients1,260
Services billed9,250 across 61 procedure codes
Paid by Medicare$646,435

Part D prescriptions in 2024

Prescriptions (claims)14,668 · 36,539 30-day fills
Patients1,022
Total drug cost$964,970
Generic share90% of claims

Medicare sources and data years

Education and affiliations

Medical schoolAt Still University of Health Sciences, College of Osteo Med, Kirksville
Graduation year1978
Medicare specialtyFamily Practice

Medical groups

Hospital affiliations

Other facilities

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$2,429 · 153 payments from 27 companies
  • 2024$2,484 · 134 payments from 25 companies

Top paying companies in 2025

CompanyAmountPayments
Axsome Therapeutics, Inc.$217.739
Corium, LLC$211.938
Pfizer Inc.$209.2211
Sumitomo Pharma America, Inc.$207.7525
Amgen Inc.$198.0518

What the 2025 payments were for

  • Food and Beverage$2,429 · 153 payments

Receiving payments does not imply wrongdoing. What Open Payments covers ·original records

Other Family Medicine providers in Rockwall

All Family Medicine providers in Texas →