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Dr. Gregory Larimer, M.D.

Psychiatry (Psychiatry Physician)

  • Medicare participating

At a glance

Years since graduation
10
In the NPI registry since
2016
Medicare patients seen, 2024
17

Licensed in Texas since 2019, 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. What an NPI is

Education and training

  • 2016Medical school: University of Texas Medical School at Houston
  • 2016Registered with an NPI (national billing number; not a license date)

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

  • Psychiatry Physician primary
    TX license S3223 (first issued 2019; active)
  • Student in an Organized Health Care Education/Training Program

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

Map: Psychiatry 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
17
Services billed
19
Patients’ average age
46
Most frequent Medicare services, 2023
ServiceTimesPatients
Psychiatric diagnostic evaluation with medical services2120

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 Psychiatry clinicians in Houston

Sources

NPI registry (CMS NPPES, November 2026; record last updated March 26, 2020), 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 Information is self-reported or billed data and may be out of date; call before visiting.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 1831546191. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.