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

Obstetrics/Gynecology

Effie E. Siomos, MD

Works at hospitals in Berlin, WI · Appleton, WI · Wisconsin

Summary

Effie E. Siomos, MD (Obstetrics/Gynecology) is listed by Medicare at 2 hospitals in Berlin, WI and Appleton, WI. NPI 1376589572. 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 Effie E. Siomos, 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

Obstetrics/GynecologyPrimary specialty
YesAccepts Medicare assignment
20Years since medical school (graduated 2006)
University Of Wisconsin School Of MedicineMedical school
FemaleGender (as listed)
Womens Care of Wisconsin SCGroup practice

Quick answers

Which hospitals does Effie E. Siomos work at?
Medicare's official clinician data lists Effie E. Siomos at 2 hospitals: Thedacare Medical Center - Berlin Inc and Thedacare Regional Medical Center - Appleton Inc. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Effie E. Siomos see patients?
Medicare's clinician data lists 1 practice location in Berlin, WI. Call before your visit to confirm the address.
What is Effie E. Siomos's specialty?
Medicare lists Obstetrics/Gynecology as the primary specialty.
Does Effie E. Siomos accept Medicare assignment?
Yes. Medicare's clinician data says Effie E. Siomos 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 Effie E. Siomos?
(920) 729-7105, as listed in official Medicare / NPI Registry data.
What is Effie E. Siomos's NPI number?
1376589572. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Effie E. Siomos works

Medicare's Facility Affiliation Data lists Effie E. Siomos 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 Effie E. Siomos is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Effie E. Siomos as a member of this group (CMS data updated 2026-10-02).

  • Womens Care of Wisconsin SC23 clinicians in the group

Specialties

Find other Obstetrics/Gynecology doctors in Wisconsin →

Other OB-GYNs in Wisconsin

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

All OB-GYNs in Wisconsin →

Clinician information

CredentialMD
Medical schoolUniversity Of Wisconsin School Of Medicine
Graduation year2006
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1376589572
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