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Dr. Barbara J. Baxter, MD

Allergy & Immunology (Allergy & Immunology (Internal Medicine) Physician)

  • Medicare participating

At a glance

Years since graduation
47
In the NPI registry since
2006
Medicare patients seen, 2024
238

Licensed in Texas since 1980, according to the Texas Medical Board. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.

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

  • 1979Medical school: Columbia University College of Physicians and Surgeons
  • 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

  • Allergy & Immunology (Internal Medicine) Physician primary
    TX license F7931 (first issued 1980; active)

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

Map: Allergy & Immunology per capita by county →

Where they work

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
238
Services billed
28,484
Patients’ average age
75
Most frequent Medicare services, 2023
ServiceTimesPatients
Injection, immune globulin, (gamunex-c/gammaked), non-lyophilized (e.g., liquid), 500 mg6,77015
Test for allergy using allergenic extract4,94863
Professional service for preparation and provision of 1 or more antigens4,047125
Injection, immune globulin (bivigam), 500 mg2,14016
Professional service for multiple injections of allergen2,104127
Test for allergy using allergenic extract injected into skin1,11158
Infusion into a vein for therapy, prevention, or diagnosis, each additional hour20816
Professional service for single injection of allergen17217
Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less16417
Established patient office or other outpatient visit, 40-54 minutes12888

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, 14 companies reported 31 payments worth $716 in total to this clinician.

By company
Novartis Pharmaceuticals Corporation$104
Octapharma USA, Inc.$91.86
Pfizer Inc.$77.81
Regeneron Healthcare Solutions, Inc.$68.84
Amgen Inc.$60.08
Azurity Pharmaceuticals, Inc.$59.93
Grifols USA, LLC$48.15
Takeda Pharmaceuticals U.S.A., Inc.$44.80
By type
Food and Beverage$682
Education$34.00

What the payments were for

Largest payments other than meals
DateCompanyWhat it was forAmount
Aug 12, 2025Amgen Inc.
Aug 12, 2025
Education
in-kind
$34.00

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 Texas →

Industry-funded research

Named as a principal investigator on 15 industry-funded studies in 2025, from 7 companies. The companies reported $521,817 in research payments for these studies, mostly to the institutions running them.

  • A multicentre, randomized, double-blind, placebo-controlled, dose find
    GlaxoSmithKline, LLC.
  • A phase 4, 52-week (primary analysis at 24-weeks), randomized, stratif
    GlaxoSmithKline, LLC.
  • A phase 2 randomized doubleblind placebocontrolled parallelgroup doseranging study to investigate the efficacy and safety of PF07275315 in adult participants with inadequately controlled moderatetosevere asthma
    Pfizer Inc.
  • A Randomized, Double-Blind, Multicenter, Active-Controlled, Parallel-Group Study to Evaluate the Efficacy and Safety of Fluticasone Propionate/Albuterol Sulfate Fixed-Dose Combination on Severe Asthma Exacerbations in…
    Teva Pharmaceuticals USA, Inc.
  • A phase 3 randomized doubleblind placebocontrolled study to evaluate the efficacy and safety of rimegepant in migraine prevention in children and adolescents 6 to 18 years of age
    Pfizer Inc.
  • A Phase 3, Multicenter, Double-blind Maintenance Study to Assess Long-term Safety, Tolerability, and Efficacy of Rocatinlimab in Adult and Adolescent Subjects With Moderate-to-severe Atopic Dermatitis (AD) (ROCKET-ASC…
    Amgen Inc.
  • A Phase 2, Randomized, Double-blind, Placebo-controlled, Dose Ranging Study to Assess the Efficacy and Safety of Rocatinlimab in Adult Subjects With Moderate-to-severe Asthma
    Amgen Inc.
  • A multi-centre, single arm, open-label extension study to evaluate the
    GlaxoSmithKline, LLC.
  • A Clinical Trial to Evaluate Efficacy and Safety of Xeomin Injections for Preventing Episodic Migraine
    Merz Pharmaceuticals, LLC
  • Randomized, Double-blind, Placebo-controlled, Multicenter Trial, Assessing the Impact of Inclisiran on Major Adverse Cardiovascular Events in Participants With Established Cardiovascular Disease (VICTORION-2 PREVENT)
    Novartis Pharmaceuticals Corporation

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 Allergy & Immunology clinicians in Dallas

Sources

NPI registry (CMS NPPES, November 2026; record last updated August 3, 2010), 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 1720035637. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.