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Orthopedic Surgery

Samuel M. Harmsen, MD

Works at hospitals in Phoenix, AZ · Arizona

Summary

Dr. Samuel M. Harmsen, MD is an orthopedic surgeon at 9377 E Bell Rd, Suite 231, Scottsdale, AZ 85260. Phone: (602) 277-6211. Accepts Medicare assignment. In 2024, Samuel M. Harmsen had 373 Original Medicare patients and 2,445 services. NPI 1528297306. 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 Samuel M. Harmsen, 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 Samuel M. Harmsen accept Medicare assignment?
Yes. Medicare's clinician data says Samuel M. Harmsen 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 Samuel M. Harmsen see?
In 2024, CMS data shows 373 Original Medicare patients and 2,445 services for Samuel M. Harmsen. This counts Original Medicare only and measures volume, not quality.
What is Samuel M. Harmsen's NPI number?
1528297306. 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 Samuel M. Harmsen, 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 patients373
Services billed to Medicare2,445
Different services or procedures39
Participating Medicare providerYes
Average age of these patients74

Most frequent services

  1. Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)1,076 services
  2. X-ray of shoulder, minimum of 2 views (73030)376 services
  3. Aspiration and/or injection of fluid from large joint (20610)248 services
  4. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)189 services
  5. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)161 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%
  • Arthritis75%
  • High blood pressure72%
  • Ischemic heart disease29%
  • Diabetes23%
  • Chronic kidney disease21%

Hospitals where Samuel M. Harmsen works

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

Group practices

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

  • Toca at Banner Health LLC26 clinicians in the group

Specialties

Find other Orthopedic Surgery doctors in Arizona →

Other orthopedic surgeons in Scottsdale

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

All orthopedic surgeons in Scottsdale →

Other clinicians in Toca at Banner Health LLC

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

Clinician information

CredentialMD
Medical schoolGeorge Washington University School Of Medicine
Graduation year2009 (17 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1528297306
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