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Dr. John Cintron Hernandez

Addiction Medicine (Addiction Medicine (Internal Medicine) Physician)

  • Medicare participating

At a glance

Years since graduation
9
In the NPI registry since
2019
Medicare patients seen, 2024
33

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

  • 2019Registered 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

  • Addiction Medicine (Internal Medicine) Physician primary
    NY license 316289
  • Internal Medicine Physician
    NY license 316289

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

Map: Addiction Medicine 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
33
Services billed
35
Patients’ average age
75
Most frequent Medicare services, 2023
ServiceTimesPatients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes8278

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.

Other Addiction Medicine clinicians in Brooklyn

Sources

NPI registry (CMS NPPES, November 2026; record last updated September 30, 2024), 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 Information is self-reported or billed data and may be out of date; call before visiting.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 1780146910. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.