Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Michael A Marsh, MD

Individual provider Otolaryngology Physician · NPI 1174547988

Dr. Michael A Marsh, MD practises Otolaryngology in Scottsdale, Arizona. Qualified in 1984, 42 years ago. Practices with Honorhealth Ambulatory, a 625-clinician group and accepts Medicare assignment. Licensed in Arkansas and Arizona.

Years since qualifying
42
Licensed in
AR, AZ
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

20745 N Scottsdale Rd Ste 105
Scottsdale, AZ 85255-6595
Phone: (480) 534-4525
Fax: (480) 882-5051
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Otolaryngology Physician (primary) Taxonomy 207Y00000X · Licence 79754 (AZ)
Otolaryngology Physician Taxonomy 207Y00000X · Licence C8388 (AR)

Record details

NPI number1174547988
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 26, 2006
Last updated in NPPESMay 21, 2026
Certification dateMay 21, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyOTOLARYNGOLOGY
Medical schoolOTHER
Graduated 1984 (42 years in practice)
Group practice Honorhealth Ambulatory — 625 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients464
Services billed 5,022 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Baptist Health - Fort Smith Hospital · Fort Smith, AR
  • Mercy Hospital Fort Smith Hospital · Fort Smith, AR

Colleagues at Honorhealth Ambulatory

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 625 clinicians in the practice; 12 are shown here.

Other providers in Scottsdale