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Obstetrics/Gynecology

Cassandra L. Beienburg, MD

Sees patients in Phoenix, AZ · Gilbert, AZ · Arizona

Summary

Dr. Cassandra L. Beienburg, MD is an OB-GYN at 16611 S 40th St, Suite 180, Phoenix, AZ 85048. Phone: (480) 785-2100. Accepts Medicare assignment. In 2024, Cassandra L. Beienburg had 29 Original Medicare patients and 48 services. NPI 1801323274. Source: CMS National Downloadable File, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: OB-GYN (Medicare lists Obstetrics/Gynecology)
  • Address: 16611 S 40th St, Suite 180, Phoenix, AZ 85048 · Directions (1 more location)
  • Phone: (480) 785‑2100
  • Medicare: Accepts Medicare assignment
  • Group practice: Southwest Contemporary Women's Care PC
  • 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 Cassandra L. Beienburg, 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 Cassandra L. Beienburg accept Medicare assignment?
Yes. Medicare's clinician data says Cassandra L. Beienburg 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 Cassandra L. Beienburg see?
In 2024, CMS data shows 29 Original Medicare patients and 48 services for Cassandra L. Beienburg. This counts Original Medicare only and measures volume, not quality.
What is Cassandra L. Beienburg's NPI number?
1801323274. 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 Cassandra L. Beienburg, 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 Medicare48
Different services or procedures14
Participating Medicare providerYes
Average age of these patients74

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)14 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 cholesterol75%
  • High blood pressure62%
  • Arthritis45%

Practice locations

Addresses where Cassandra L. Beienburg is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Cassandra L. Beienburg as a member of this group (CMS data updated October 2, 2026).

  • Southwest Contemporary Women's Care PC22 clinicians in the group

Specialties

Find other Obstetrics/Gynecology doctors in Arizona →

Other OB-GYNs in Phoenix

Clinicians with the same Medicare primary specialty in Phoenix, AZ — not a recommendation.

All OB-GYNs in Phoenix →

Other clinicians in Southwest Contemporary Women's Care PC

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)1801323274
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. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  2. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  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