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Obstetrics/Gynecology

Amanda N. Waltos Hieger, MD

Works at hospitals in Saint Louis, MO · Missouri

Summary

Dr. Amanda N. Waltos Hieger, MD is an OB-GYN at 10777 Sunset Office Dr, Suite 200, Saint Louis, MO 63127. Phone: (314) 842-4802. Accepts Medicare assignment. In 2024, Amanda N. Waltos Hieger had 29 Original Medicare patients and 51 services. NPI 1508350091. 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.

  • Specialty: OB-GYN (Medicare lists Obstetrics/Gynecology)
  • Address: 10777 Sunset Office Dr, Suite 200, Saint Louis, MO 63127 · Directions
  • Phone: (314) 842‑4802
  • Medicare: Accepts Medicare assignment
  • Hospitals: Mercy Hospital South, Mercy Hospital St Louis
  • Group practice: Mercy Clinic East Communities
  • Medical school: Saint Louis University School Of Medicine · graduated 2018 (8 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Amanda N. Waltos Hieger, 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 Amanda N. Waltos Hieger accept Medicare assignment?
Yes. Medicare's clinician data says Amanda N. Waltos Hieger 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 Amanda N. Waltos Hieger see?
In 2024, CMS data shows 29 Original Medicare patients and 51 services for Amanda N. Waltos Hieger. This counts Original Medicare only and measures volume, not quality.
What is Amanda N. Waltos Hieger's NPI number?
1508350091. 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 Amanda N. Waltos Hieger, 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 patients29
Services billed to Medicare51
Different services or procedures11
Participating Medicare providerYes
Average age of these patients67

Most frequent services

  1. Cervical or vaginal cancer screening; pelvic and clinical breast examination (G0101)20 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 cholesterol72%
  • High blood pressure66%

Hospitals where Amanda N. Waltos Hieger works

Medicare's Facility Affiliation Data lists Amanda N. Waltos Hieger 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 Amanda N. Waltos Hieger is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Amanda N. Waltos Hieger as a member of this group (CMS data updated October 2, 2026).

  • Mercy Clinic East Communities571 clinicians in the group

Specialties

Find other Obstetrics/Gynecology doctors in Missouri →

Other OB-GYNs in Saint Louis

Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.

All OB-GYNs in Saint Louis →

Other clinicians in Mercy Clinic East Communities

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

Clinician information

CredentialMD
Medical schoolSaint Louis University School Of Medicine
Graduation year2018 (8 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1508350091
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