Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Hematology/Oncology

Maria T. Grosse Perdekamp, MD

Works at hospitals in Normal, IL · Urbana, IL · Hoopeston, IL … · Illinois

Summary

Dr. Maria T. Grosse Perdekamp, MD is a hematologist-oncologist at 200 Lerna Rd S, Mattoon, IL 61938. Phone: (217) 258-5900. Accepts Medicare assignment. In 2024, Maria T. Grosse Perdekamp had 194 Original Medicare patients and 25,352 services. NPI 1124077714. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Maria T. Grosse Perdekamp, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Maria T. Grosse Perdekamp accept Medicare assignment?
Yes. Medicare's clinician data says Maria T. Grosse Perdekamp accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Maria T. Grosse Perdekamp see?
In 2024, CMS data shows 194 Original Medicare patients and 25,352 services for Maria T. Grosse Perdekamp. This counts Original Medicare only and measures volume, not quality.
What is Maria T. Grosse Perdekamp's NPI number?
1124077714. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Maria T. Grosse Perdekamp, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients194
Services billed to Medicare25,352
Different services or procedures85
Participating Medicare providerYes
Average age of these patients71

Most frequent services

  1. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)265 services
  2. Infusion, normal saline solution , 1000 cc (J7030)127 services
  3. Infusion into a vein for therapy, prevention, or diagnosis, additional sequential infusion, 1 hour or less (96367)97 services
  4. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)84 services
  5. Infusion, normal saline solution, 250 cc (J7050)81 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol71%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)54%
  • Arthritis49%
  • Diabetes37%
  • Ischemic heart disease37%

Hospitals where Maria T. Grosse Perdekamp works

Medicare's Facility Affiliation Data lists Maria T. Grosse Perdekamp at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Maria T. Grosse Perdekamp is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.

Group practices

Medicare enrollment lists Maria T. Grosse Perdekamp as a member of these groups (CMS data updated October 2, 2026).

  • Carle Health Care Incorporated1,666 clinicians in the group
  • Carle West Physician Group Inc271 clinicians in the group
  • Hoopeston Community Memorial Hospital144 clinicians in the group

Specialties

Find other Hematology/Oncology doctors in Illinois →

Other hematologist-oncologists in Mattoon

Clinicians with the same Medicare primary specialty in Mattoon, IL — not a recommendation.

All hematologist-oncologists in Mattoon →

Other clinicians in Carle Health Care Incorporated

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Graduation year1995 (31 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1124077714
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians