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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Michael A Marsh, M.D.

Otolaryngology Physician in Scottsdale, AZ · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1174547988

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Registry record

Entity type Individual (Type 1)
Name Dr. Michael A Marsh
Credential M.D.
Sex Male
Practice address 20745 N Scottsdale Rd Ste 105, Scottsdale, AZ, 85255
Phone (480) 534-4525
Fax (480) 882-5051
Enumeration date Jul 26, 2006
Last updated in NPPES May 21, 2026

Taxonomy & licenses

207Y00000X Otolaryngology Physician Allopathic & Osteopathic Physicians · License C8388 (AR) Secondary
207Y00000X Otolaryngology Physician Allopathic & Osteopathic Physicians · License 79754 (AZ) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
100032240A Medicaid OK -
122738001 Medicaid AR -

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How do I verify Michael Marsh's NPI record?
Cross-check NPI 1174547988 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1174547988 active?
Yes, as of the latest NPPES snapshot, NPI 1174547988 is active (record last updated 2026-05-21).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-05-21.