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Dr. Adam Doerr, MD

Internal Medicine (Internal Medicine Physician)

  • Medicare participating

At a glance

In the NPI registry since
2020
Medicare patients seen, 2024
38

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. What an NPI is

Education and training

  • 2020Registered with an NPI (national billing number; not a license date)

Medicare’s Care Compare data doesn’t list this clinician’s medical school. 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

  • Internal Medicine Physician primary
    MA license 1016525

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

Map: Internal Medicine per capita by county →

Medicare patients and services

Medicare patients, 2024
38
Services billed
92
Patients’ average age
75
Most frequent Medicare services, 2023
ServiceTimesPatients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes3916

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.

Payments from drug and device companies

In 2025, 19 companies reported 85 payments worth $2,228 in total to this clinician.

What the payments were for

Largest payments other than meals
DateCompanyWhat it was forAmount
Oct 2, 2025Zoll Services LLC (a/k/a Zoll Lifecor Corp)
Oct 2, 2025
Education
LifeVest · Electromedical and Electrotherapeutic Apparatus
$85.00

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 Massachusetts →

Other Internal Medicine clinicians in Worcester

Sources

NPI registry (CMS NPPES, November 2026; record last updated July 12, 2023), 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 1023646379. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.