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Pediatric Medicine

Philip E. Siefken, MD

Works at hospitals in Maryville, IL · Vandalia, IL · Greenville, IL … · Illinois

Summary

Philip E. Siefken, MD (Pediatric Medicine) is listed by Medicare at 5 hospitals in Maryville, IL, Vandalia, IL and Greenville, IL and other places. NPI 1689629107. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Philip E. Siefken, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Pediatric MedicinePrimary specialty
YesAccepts Medicare assignment
36Years since medical school (graduated 1990)
University Of Illinois College Of Med (chi/peor/rock/chm-Urb)Medical school
MaleGender (as listed)
Sarah Bush Lincoln Health CenterGroup practice (+1 more)

Quick answers

Which hospitals does Philip E. Siefken work at?
Medicare's official clinician data lists Philip E. Siefken at 5 hospitals: Anderson Hospital, Fayette County Hospital, HSHS Holy Family Hospital Inc, Sarah Bush Lincoln Health Center and St Joseph's Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Philip E. Siefken see patients?
Medicare's clinician data lists 5 practice locations, including Greenville, IL and Vandalia, IL. Call before your visit to confirm the address.
What is Philip E. Siefken's specialty?
Medicare lists Pediatric Medicine as the primary specialty, and also Internal Medicine.
Does Philip E. Siefken accept Medicare assignment?
Yes. Medicare's clinician data says Philip E. Siefken accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Philip E. Siefken?
(618) 283-1617, as listed in official Medicare / NPI Registry data.
What is Philip E. Siefken's NPI number?
1689629107. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Philip E. Siefken works

Medicare's Facility Affiliation Data lists Philip E. Siefken at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Philip E. Siefken is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Philip E. Siefken as a member of these groups (CMS data updated 2026-10-02).

  • Sarah Bush Lincoln Health Center419 clinicians in the group
  • Greenville Family Medicine, LLC6 clinicians in the group

Specialties

Find other Pediatric Medicine doctors in Illinois →

Other pediatricians in Illinois

Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.

All pediatricians in Illinois →

Clinician information

CredentialMD
Medical schoolUniversity Of Illinois College Of Med (chi/peor/rock/chm-Urb)
Graduation year1990
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1689629107
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 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians