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Dr. Nancy L. Bartlett, MD

Medical Oncology (Medical Oncology Physician)

  • Medicare participating

At a glance

Years since graduation
40
In the NPI registry since
2006
Medicare patients seen, 2024
698

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

  • 1986Medical school: Washington University School of Medicine
  • 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

  • Medical Oncology Physician primary
    MO license 104872

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

Map: Medical 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
698
Services billed
34,167
Patients’ average age
73
Most frequent Medicare services, 2023
ServiceTimesPatients
Injection, fosaprepitant, 1 mg5,85021
Injection, pembrolizumab, 1 mg5,20011
Injection, dexamethasone sodium phosphate, 1 mg1,70087
Injection, rituximab-pvvr, biosimilar, (ruxience), 10 mg1,55017
Injection, immune globulin, (gamunex-c/gammaked), non-lyophilized (e.g., liquid), 500 mg1,23018
Injection, palonosetron hcl, 25 mcg1,03064
Insertion of needle into vein for collection of blood sample809371
Established patient office or other outpatient visit, 30-39 minutes766393
Injection, leucovorin calcium, per 50 mg61315
Injection, pegfilgrastim, excludes biosimilar, 0.5 mg42023

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, 3 companies reported 6 payments worth $559 in total to this clinician.

By company
Taiho Oncology, Inc.$422
AstraZeneca Pharmaceuticals LP$107
Abbott Laboratories$29.93
By type
Speaking at a medical education program$272
Travel and Lodging$258
Food and Beverage$29.93

What the payments were for

Largest payments other than meals
DateCompanyWhat it was forAmount
Oct 31, 2025Taiho Oncology, Inc.
Oct 31, 2025
Speaking at a medical education program$272
Aug 23, 2025AstraZeneca Pharmaceuticals LP
Aug 23, 2025
Travel and Lodging
travel to San Diego, CA · in-kind
$107
Nov 15, 2025Taiho Oncology, Inc.
Nov 15, 2025
Travel and Lodging
travel to San Diego, CA · in-kind
$72.88
Aug 23, 2025Taiho Oncology, Inc.
Aug 23, 2025
Travel and Lodging
travel to San Diego, CA · in-kind
$63.65
Oct 31, 2025Taiho Oncology, Inc.
Oct 31, 2025
Travel and Lodging
travel to San Diego, CA
$14.14

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 Missouri →

Industry-funded research

Named as a principal investigator on 12 industry-funded studies in 2025, from 6 companies. The companies reported $1,425,339 in research payments for these studies, mostly to the institutions running them.

  • Phase 3 Mosunetuzumab Lenalidomide in R R Follicular Lymphoma
    Genentech, Inc.
  • M pola in 1L FL
    Genentech, Inc.
  • Phase 1 EIH CD19 4 1BBL
    Genentech, Inc.
  • A randomized doubleblind placebocontrolled activecomparator multicenter phase 3 study of brentuximab vedotin or placebo in combination with lenalidomide and rituximab in subjects with relapsed or refractory diffuse la…
    Pfizer Inc.
  • A Phase 3 Open Label Randomized Study to Compare the Efficacy and Safety of Rituximab Plus Lenalidomide (CC-5013) Versus Rituximab Plus Chemotherapy Followed by Rituximab in Subjects With Previously Untreated Follicular Lymphoma
    E.r. Squibb & Sons, L.l.c. · Completed · NCT01650701
  • Phase I Dose Escalation Trial of RO7082859 in patients with R R NHL
    Genentech, Inc.
  • A Phase 1/2a, Open-Label, Dose Escalation Trial of GEN3017 With Expansion Cohorts in Relapsed or Refractory CD30+ Classical Hodgkin Lymphoma and CD30+ Non-Hodgkin Lymphoma
    Genmab A/s
  • M DHAX ICE in R R B NHL
    Genentech, Inc.
  • An open-label, multicenter, phase i/ii trial evaluating the safety, efficacy, and pharmacokinetics of escalating doses of mosunetuzumab (BTCT4465A) as a single agent and combined with atezolizumab in patients with rel…
    Genentech, Inc.
  • Glofitamab ctDNA study
    Genentech, Inc.

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 Medical Oncology clinicians in Saint Louis

Sources

NPI registry (CMS NPPES, November 2026; record last updated April 15, 2025), 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 1316965759. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.