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Dermatology

Anna M. Sonstegard, MD

Works at hospitals in Sioux Falls, SD · South Dakota

Summary

Dr. Anna M. Sonstegard, MD is a dermatologist at 1310 W 22nd St, Sioux Falls, SD 57105. Accepts Medicare assignment. In 2024, Anna M. Sonstegard had 161 Original Medicare patients and 551 services. NPI 1902337298. 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: Dermatologist (Medicare lists Dermatology)
  • Address: 1310 W 22nd St, Sioux Falls, SD 57105 · Directions (1 more location)
  • Medicare: Accepts Medicare assignment
  • Hospital: Sanford Usd Medical Center
  • Group practice: Sanford Medical Center
  • Medical school: graduated 2017 (9 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Anna M. Sonstegard, 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 Anna M. Sonstegard accept Medicare assignment?
Yes. Medicare's clinician data says Anna M. Sonstegard 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 Anna M. Sonstegard see?
In 2024, CMS data shows 161 Original Medicare patients and 551 services for Anna M. Sonstegard. This counts Original Medicare only and measures volume, not quality.
What is Anna M. Sonstegard's NPI number?
1902337298. 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 Anna M. Sonstegard, 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 patients161
Services billed to Medicare551
Different services or procedures45
Participating Medicare providerYes
Average age of these patients71

Most frequent services

  1. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)124 services
  2. Destruction of precancer skin growth, 2-14 growths (17003)98 services
  3. Biopsy of related skin growth, first growth (11102)51 services
  4. Destruction of precancer skin growth, 1 growth (17000)46 services
  5. Destruction of skin growth, 1-14 growths (17110)43 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%
  • Arthritis40%
  • Diabetes30%
  • Anxiety27%
  • Ischemic heart disease26%

Hospitals where Anna M. Sonstegard works

Medicare's Facility Affiliation Data lists Anna M. Sonstegard 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 Anna M. Sonstegard is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Anna M. Sonstegard as a member of this group (CMS data updated October 2, 2026).

  • Sanford Medical Center857 clinicians in the group

Specialties

Find other Dermatology doctors in South Dakota →

Other dermatologists in Sioux Falls

Clinicians with the same Medicare primary specialty in Sioux Falls, SD — not a recommendation.

All dermatologists in Sioux Falls →

Other clinicians in Sanford Medical Center

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

Clinician information

CredentialMD
Graduation year2017 (9 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1902337298
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