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

Obstetrics/Gynecology

Jeffrey S. Pfeiffer, MD

Works at hospitals in Winfield, IL · Illinois

Summary

Dr. Jeffrey S. Pfeiffer, MD is an OB-GYN at 550 Southland Dr, Decatur, IL 62521. Phone: (217) 615-1144. Accepts Medicare assignment. In 2024, Jeffrey S. Pfeiffer had 167 Original Medicare patients and 485 services. NPI 1134103070. 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 Jeffrey S. Pfeiffer, 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 Jeffrey S. Pfeiffer accept Medicare assignment?
Yes. Medicare's clinician data says Jeffrey S. Pfeiffer 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 Jeffrey S. Pfeiffer see?
In 2024, CMS data shows 167 Original Medicare patients and 485 services for Jeffrey S. Pfeiffer. This counts Original Medicare only and measures volume, not quality.
What is Jeffrey S. Pfeiffer's NPI number?
1134103070. 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 Jeffrey S. Pfeiffer, 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 patients167
Services billed to Medicare485
Different services or procedures20
Participating Medicare providerYes
Average age of these patients69

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)211 services
  2. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)86 services
  3. New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)32 services
  4. Cervical or vaginal cancer screening; pelvic and clinical breast examination (G0101)27 services
  5. Ultrasound scan of uterus, ovaries, tubes, cervix and pelvic area through vagina (76830)23 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 pressure62%
  • High cholesterol62%
  • Arthritis44%
  • Anxiety26%
  • Depression22%
  • Diabetes20%

Hospitals where Jeffrey S. Pfeiffer works

Medicare's Facility Affiliation Data lists Jeffrey S. Pfeiffer 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 Jeffrey S. Pfeiffer is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Jeffrey S. Pfeiffer as a member of this group (CMS data updated October 2, 2026).

  • Vero Clinics Inc4 clinicians in the group

Specialties

Find other Obstetrics/Gynecology doctors in Illinois →

Other OB-GYNs in Decatur

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

All OB-GYNs in Decatur →

Other clinicians in Vero Clinics Inc

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

Clinician information

CredentialMD
Graduation year1997 (29 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1134103070
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