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Dr. Cassi B. Grotepas, M.D.

Pathology (Anatomic Pathology & Clinical Pathology Physician)

  • Medicare participating

At a glance

Years since graduation
13
In the NPI registry since
2013
Medicare patients seen, 2024
553

Licensed in Illinois since 2019, according to the Illinois Department of Financial and Professional Regulation. 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

  • 2013Registered 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

  • Anatomic Pathology & Clinical Pathology Physician primary
    IL license 036148321 (first issued 2019; active) · UT license 10071478-1205

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

Map: Pathology 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
553
Services billed
1,677
Patients’ average age
73
Most frequent Medicare services, 2023
ServiceTimesPatients
Pathology examination of tissue using a microscope, intermediate complexity841396
Special stained specimen slides to examine tissue, each additional procedure18753
Pathology examination of tissue using a microscope, moderately high complexity8559
Special stained specimen slides to examine tissue, initial procedure7977
Cell examination of specimen, selective cellular enhancement technique7066
Pathology examination of tissue using a microscope, moderately low complexity6860
Special stained specimen slides to identify organisms including interpretation and report4928
Preparation of tissue for examination by removing any calcium present4640
Pap test2121
Screening cytopathology, cervical or vaginal (any reporting system), collected in preservative fluid, automated thin layer preparation, requiring interpretation by physician1919

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 Pathology clinicians in Springfield

Sources

NPI registry (CMS NPPES, November 2026; record last updated March 22, 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 1023455219. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.