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Anesthesiology

Marianne Mikatstevens, MD

Works at hospitals in Princeton, IL · Peru, IL · Illinois

Summary

Dr. Marianne Mikatstevens, MD is an anesthesiologist at 1100 E Norris Dr, Ottawa, IL 61350. Phone: (815) 433-3100. Accepts Medicare assignment. In 2024, Marianne Mikatstevens had 525 Original Medicare patients and 568 services. NPI 1598735904. 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 Marianne Mikatstevens, 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 Marianne Mikatstevens accept Medicare assignment?
Yes. Medicare's clinician data says Marianne Mikatstevens 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 Marianne Mikatstevens see?
In 2024, CMS data shows 525 Original Medicare patients and 568 services for Marianne Mikatstevens. This counts Original Medicare only and measures volume, not quality.
What is Marianne Mikatstevens's NPI number?
1598735904. 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 Marianne Mikatstevens, 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 patients525
Services billed to Medicare568
Different services or procedures50
Participating Medicare providerYes
Average age of these patients74

Most frequent services

  1. Anesthesia for lens surgery (00142)110 services
  2. Anesthesia for procedure on small and large bowel using an endoscope (00813)94 services
  3. Anesthesia for other procedure on large bowel using an endoscope (00811)53 services
  4. Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)41 services
  5. Anesthesia for other procedure on urinary system through urethra (00910)37 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 cholesterol75%
  • Arthritis47%
  • Diabetes32%
  • Chronic kidney disease29%
  • Ischemic heart disease22%

Hospitals where Marianne Mikatstevens works

Medicare's Facility Affiliation Data lists Marianne Mikatstevens 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.

  • OSF Saint Clare Medical CenterPrinceton, IL · Critical Access Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 141337
  • OSF Saint Elizabeth MDL CenterPeru, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140110

Practice locations

Addresses where Marianne Mikatstevens is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Marianne Mikatstevens as a member of this group (CMS data updated October 2, 2026).

  • OSF Multi-Specialty Group2,114 clinicians in the group

Specialties

Find other Anesthesiology doctors in Illinois →

Other anesthesiologists in Ottawa

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

All anesthesiologists in Ottawa →

Other clinicians in OSF Multi-Specialty Group

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

Clinician information

CredentialMD
Graduation year1980 (46 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1598735904
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