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Dr. Eric S. Schaefer, M.D.

Hematology & Oncology (Hematology & Oncology Physician)

  • Medicare participating

At a glance

Medical school
Medical College of Ohio (2003)
Years since graduation
23
In the NPI registry since
2006
Medicare patients seen, 2024
1,492

The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is

Education and training

  • 2003Medical school: Medical College of Ohio
  • 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier

Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).

Specialties and state licenses

  • Hematology & Oncology Physician primary
    AR license E-6041

As reported to the NPI registry. To confirm a license is current, check the state medical board.

Map: Hematology & Oncology per capita by county →

Where they work

Hospitals

Medical groups

Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.

Medicare patients and services

Medicare patients, 2024
1,492
Services billed
313,522
Patients’ average age
74
Most frequent Medicare services, 2023
ServiceTimesPatients
Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml56,255282
Injection, gadoterate meglumine, 0.1 ml29,506101
Injection, pembrolizumab, 1 mg28,80053
Injection, ferumoxytol, for treatment of iron deficiency anemia, 1 mg (non-esrd use)28,05046
Injection, nivolumab, 1 mg23,52026
Injection, filgrastim-aafi, biosimilar, (nivestym), 1 microgram21,42030
Injection, paclitaxel, 1 mg12,64638
Injection, denosumab, 1 mg9,06070
Injection, testosterone cypionate, 1 mg7,38014
Injection, fosaprepitant, 1 mg4,95020

Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.

Medicare prescriptions

Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.

Payments from drug and device companies

In 2025, 36 companies reported 158 payments worth $148,212 in total to this clinician.

By company
Cornerstone Specialty Network LLC$101,309
Daiichi Sankyo Inc.$18,312
Onmark, Inc.$11,067
Sanofi US Services Inc.$6,711
Regeneron Healthcare Solutions, Inc.$2,792
Janssen Biotech, Inc.$1,948
Novartis Pharmaceuticals Corporation$1,468
GlaxoSmithKline, LLC.$1,315
By type
Compensation for services other than consulting (speaking, faculty)$72,980
Consulting Fee$36,961
Honoraria$30,739
Food and Beverage$3,883
Travel and Lodging$3,650

What the payments were for

Largest payments other than meals
DateCompanyWhat it was forAmount
Dec 15, 2025Cornerstone Specialty Network LLC
Dec 15, 2025
Compensation for services other than consulting (speaking, faculty)$24,415
Feb 6, 2025Cornerstone Specialty Network LLC
Feb 6, 2025
Compensation for services other than consulting (speaking, faculty)$9,933
Feb 19, 2025Cornerstone Specialty Network LLC
Feb 19, 2025
Compensation for services other than consulting (speaking, faculty)$9,933
Mar 18, 2025Cornerstone Specialty Network LLC
Mar 18, 2025
Compensation for services other than consulting (speaking, faculty)$9,933
Dec 31, 2025Cornerstone Specialty Network LLC
Dec 31, 2025
Compensation for services other than consulting (speaking, faculty)$9,932
Feb 28, 2025Cornerstone Specialty Network LLC
Feb 28, 2025
Honoraria$8,502
Nov 14, 2025Onmark, Inc.
Nov 14, 2025
Consulting Fee$8,313
Dec 3, 2025Daiichi Sankyo Inc.
Dec 3, 2025
Consulting Fee
Enhertu · ONCOLOGY
$5,405
Mar 31, 2025Cornerstone Specialty Network LLC
Mar 31, 2025
Honoraria$4,110
Nov 5, 2025Sanofi US Services Inc.
Nov 5, 2025
Compensation for services other than consulting (speaking, faculty)
AYVAKIT · Gastroenterology
$3,790
All 66 payments other than meals, newest first
All payments other than meals
DateCompanyWhat it was forAmount
Dec 31, 2025Cornerstone Specialty Network LLC
Dec 31, 2025
Compensation for services other than consulting (speaking, faculty)$9,932
Dec 22, 2025Cornerstone Specialty Network LLC
Dec 22, 2025
Honoraria$825
Dec 15, 2025Cornerstone Specialty Network LLC
Dec 15, 2025
Compensation for services other than consulting (speaking, faculty)$24,415
Dec 15, 2025Cornerstone Specialty Network LLC
Dec 15, 2025
Honoraria$2,750
Dec 10, 2025Cornerstone Specialty Network LLC
Dec 10, 2025
Honoraria$550
Dec 4, 2025Cornerstone Specialty Network LLC
Dec 4, 2025
Honoraria$550
Dec 3, 2025Daiichi Sankyo Inc.
Dec 3, 2025
Consulting Fee
Enhertu · ONCOLOGY
$5,405
Nov 20, 2025Cornerstone Specialty Network LLC
Nov 20, 2025
Honoraria$3,100
Nov 20, 2025Cornerstone Specialty Network LLC
Nov 20, 2025
Honoraria$1,000
Nov 20, 2025Cornerstone Specialty Network LLC
Nov 20, 2025
Honoraria$825
Nov 18, 2025Janssen Scientific Affairs, LLC
Nov 18, 2025
Consulting Fee
RYBREVANT · Oncology
$1,080
Nov 17, 2025Cornerstone Specialty Network LLC
Nov 17, 2025
Honoraria$550
Nov 14, 2025Onmark, Inc.
Nov 14, 2025
Consulting Fee$8,313
Nov 12, 2025Sanofi US Services Inc.
Nov 12, 2025
Compensation for services other than consulting (speaking, faculty)
AYVAKIT · Gastroenterology
$1,166
Nov 10, 2025Sanofi US Services Inc.
Nov 10, 2025
Compensation for services other than consulting (speaking, faculty)
AYVAKIT · Gastroenterology
$1,166
Nov 5, 2025Sanofi US Services Inc.
Nov 5, 2025
Compensation for services other than consulting (speaking, faculty)
AYVAKIT · Gastroenterology
$3,790
Nov 5, 2025Daiichi Sankyo Inc.
Nov 5, 2025
Consulting Fee$940
Nov 5, 2025Sanofi US Services Inc.
Nov 5, 2025
Travel and Lodging
AYVAKIT · Gastroenterology · travel to Rogers, AR
$30.50
Oct 29, 2025Daiichi Sankyo Inc.
Oct 29, 2025
Consulting Fee$823
Oct 25, 2025Cornerstone Specialty Network LLC
Oct 25, 2025
Travel and Lodging
travel to Las Vegas, NV
$1,012
Oct 25, 2025Cornerstone Specialty Network LLC
Oct 25, 2025
Travel and Lodging
travel to Las Vegas, NV
$961
Oct 15, 2025Cornerstone Specialty Network LLC
Oct 15, 2025
Compensation for services other than consulting (speaking, faculty)$2,275
Oct 15, 2025Cornerstone Specialty Network LLC
Oct 15, 2025
Honoraria$550
Oct 8, 2025Cornerstone Specialty Network LLC
Oct 8, 2025
Honoraria$550
Oct 7, 2025Janssen Global Services, LLC
Oct 7, 2025
Consulting Fee
TECVAYLI · Oncology
$575
Oct 6, 2025AstraZeneca Pharmaceuticals LP
Oct 6, 2025
Consulting Fee
TAGRISSO · Oncology
$335
Sep 24, 2025Daiichi Sankyo Inc.
Sep 24, 2025
Consulting Fee
DATROWAY · ONCOLOGY
$940
Sep 19, 2025Regeneron Healthcare Solutions, Inc.
Sep 19, 2025
Consulting Fee
LIBTAYO · ONCOLOGY
$2,493
Sep 19, 2025Regeneron Healthcare Solutions, Inc.
Sep 19, 2025
Consulting Fee
LIBTAYO · ONCOLOGY
$208
Sep 17, 2025Daiichi Sankyo Inc.
Sep 17, 2025
Consulting Fee
DATROWAY · ONCOLOGY
$1,388
Sep 11, 2025Onmark, Inc.
Sep 11, 2025
Travel and Lodging
travel to San Diego, CA
$681
Sep 11, 2025Onmark, Inc.
Sep 11, 2025
Travel and Lodging
travel to San Diego, CA
$323
Sep 3, 2025Daiichi Sankyo Inc.
Sep 3, 2025
Consulting Fee$940
Aug 20, 2025Daiichi Sankyo Inc.
Aug 20, 2025
Consulting Fee
Enhertu · ONCOLOGY
$940
Aug 1, 2025Sanofi US Services Inc.
Aug 1, 2025
Compensation for services other than consulting (speaking, faculty)
AYVAKIT · Gastroenterology
$437
Jul 22, 2025Cornerstone Specialty Network LLC
Jul 22, 2025
Honoraria$975
Jun 18, 2025Daiichi Sankyo Inc.
Jun 18, 2025
Consulting Fee
DATROWAY · ONCOLOGY
$940
Jun 13, 2025Janssen Biotech, Inc.
Jun 13, 2025
Consulting Fee
ERLEADA · Oncology
$1,263
Jun 4, 2025Daiichi Sankyo Inc.
Jun 4, 2025
Consulting Fee
DATROWAY · ONCOLOGY
$940
Jun 4, 2025Daiichi Sankyo Inc.
Jun 4, 2025
Consulting Fee
DATROWAY · ONCOLOGY
$940
May 20, 2025Cornerstone Specialty Network LLC
May 20, 2025
Honoraria$550
May 19, 2025Novartis Pharmaceuticals Corporation
May 19, 2025
Consulting Fee$1,375
May 2, 2025Janssen Biotech, Inc.
May 2, 2025
Consulting Fee
RYBREVANT · Oncology
$575
Apr 16, 2025Daiichi Sankyo Inc.
Apr 16, 2025
Consulting Fee
DATROWAY · ONCOLOGY
$833
Apr 11, 2025Onmark, Inc.
Apr 11, 2025
Consulting Fee$175
Apr 9, 2025Cornerstone Specialty Network LLC
Apr 9, 2025
Honoraria$2,250
Apr 9, 2025Cornerstone Specialty Network LLC
Apr 9, 2025
Honoraria$1,000
Apr 9, 2025Daiichi Sankyo Inc.
Apr 9, 2025
Consulting Fee
DATROWAY · ONCOLOGY
$833
Mar 31, 2025Cornerstone Specialty Network LLC
Mar 31, 2025
Honoraria$4,110
Mar 26, 2025Daiichi Sankyo Inc.
Mar 26, 2025
Consulting Fee
DATROWAY · ONCOLOGY
$833
Mar 18, 2025Cornerstone Specialty Network LLC
Mar 18, 2025
Compensation for services other than consulting (speaking, faculty)$9,933
Mar 18, 2025Onmark, Inc.
Mar 18, 2025
Consulting Fee$350
Mar 16, 2025Onmark, Inc.
Mar 16, 2025
Consulting Fee$350
Mar 14, 2025Cornerstone Specialty Network LLC
Mar 14, 2025
Travel and Lodging
travel to Dallas, TX
$402
Mar 14, 2025Cornerstone Specialty Network LLC
Mar 14, 2025
Travel and Lodging
travel to Dallas, TX
$240
Mar 13, 2025Cornerstone Specialty Network LLC
Mar 13, 2025
Honoraria$550
Feb 28, 2025Cornerstone Specialty Network LLC
Feb 28, 2025
Honoraria$8,502
Feb 28, 2025Cornerstone Specialty Network LLC
Feb 28, 2025
Honoraria$1,002
Feb 25, 2025Cornerstone Specialty Network LLC
Feb 25, 2025
Honoraria$550
Feb 20, 2025Daiichi Sankyo Inc.
Feb 20, 2025
Consulting Fee$823
Feb 19, 2025Cornerstone Specialty Network LLC
Feb 19, 2025
Compensation for services other than consulting (speaking, faculty)$9,933
Feb 6, 2025Cornerstone Specialty Network LLC
Feb 6, 2025
Compensation for services other than consulting (speaking, faculty)$9,933
Jan 30, 2025GlaxoSmithKline, LLC.
Jan 30, 2025
Consulting Fee$1,300
Jan 9, 2025Onmark, Inc.
Jan 9, 2025
Consulting Fee$350
Jan 8, 2025Daiichi Sankyo Inc.
Jan 8, 2025
Consulting Fee$470
Jan 8, 2025Daiichi Sankyo Inc.
Jan 8, 2025
Consulting Fee$235

Each payment as the company reported it, with the products it named. Meals are counted in the totals above but not listed one by one.

From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.

Who received the most in Arkansas →

Industry-funded research

Named as a principal investigator on 21 industry-funded studies in 2025, from 10 companies. The companies reported $1,269,769 in research payments for these studies, mostly to the institutions running them.

From CMS Open Payments research payments, where companies name up to five principal investigators per payment. Research payments usually go to hospitals, universities and research sites, not to the investigator personally. A payment is not evidence of wrongdoing.

Other Hematology & Oncology clinicians in Rogers

Sources

NPI registry (CMS NPPES, November 2026; record last updated July 6, 2026), Medicare Care Compare, Medicare Physician & Other Practitioners (2024), Medicare Part D Prescribers (2024) and Open Payments (2025). Information is self-reported or billed data and may be out of date; call before visiting.

NPI 1558325118. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.