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Family Practice

Mary K. Foos, MD

Works at hospitals in Shawnee Mission, KS · Overland Park, KS · Kansas City, KS · Kansas

Summary

Dr. Mary K. Foos, MD is a family doctor at 9301 W 74th St, Merriam, KS 66204. Phone: (913) 632-9100. Accepts Medicare assignment. In 2024, Mary K. Foos had 341 Original Medicare patients and 2,458 services. NPI 1295827822. 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.

From official Medicare data

This page shows what Medicare's official clinician data says about Mary K. Foos, 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 Mary K. Foos accept Medicare assignment?
Yes. Medicare's clinician data says Mary K. Foos 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 Mary K. Foos see?
In 2024, CMS data shows 341 Original Medicare patients and 2,458 services for Mary K. Foos. This counts Original Medicare only and measures volume, not quality.
What is Mary K. Foos's NPI number?
1295827822. 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 Mary K. Foos, 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 patients341
Services billed to Medicare2,458
Different services or procedures40
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. Injection, denosumab, 1 mg (J0897)900 services
  2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)458 services
  3. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)238 services
  4. Annual alcohol misuse screening, 5 to 15 minutes (G0442)237 services
  5. Annual depression screening, 5 to 15 minutes (G0444)234 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 pressure61%
  • Arthritis38%
  • Depression23%
  • Anxiety22%
  • Osteoporosis21%

Hospitals where Mary K. Foos works

Medicare's Facility Affiliation Data lists Mary K. Foos 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 Mary K. Foos is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Mary K. Foos as a member of this group (CMS data updated October 2, 2026).

  • Shawnee Mission Medical Center Inc286 clinicians in the group

Specialties

Find other Family Practice doctors in Kansas →

Other family doctors in Merriam

Clinicians with the same Medicare primary specialty in Merriam, KS — not a recommendation.

All family doctors in Merriam →

Other clinicians in Shawnee Mission Medical Center Inc

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

Clinician information

CredentialMD
Medical schoolUniversity Of Kansas School Of Med (kc/wich/sal)
Graduation year1991 (35 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1295827822
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