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Dr. Gregg J. Eichman, DO

Family Medicine (Family Medicine Physician)

  • Medicare participating

At a glance

Years since graduation
33
In the NPI registry since
2006
Medicare patients seen, 2024
88

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

  • 1993Medical school: Oklahoma State University College of Osteopathic 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

  • Family Medicine Physician primary
    OK license 3186

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

Map: Family 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
88
Services billed
181
Patients’ average age
66
Most frequent Medicare services, 2023
ServiceTimesPatients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes5622
Established patient office or other outpatient visit, 30-39 minutes4642
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes2111
Hospital discharge day management, 30 minutes or less1515

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.

Other Family Medicine clinicians in Oklahoma City

Sources

NPI registry (CMS NPPES, November 2026; record last updated October 20, 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 1427088160. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.