Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark Gunst, MD

Surgical Critical Care Physician in Chandler, AZ · enumerated 2006.

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

National Provider Identifier

1144209842

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Registry record

Entity type Individual (Type 1)

Name Mark Gunst

Credential MD

Sex Male

Practice address 485 S Dobson Rd, Suite 201, Chandler, AZ, 85224

Phone (480) 728-4700

Enumeration date Jan 11, 2006

Last updated in NPPES Feb 17, 2015

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License M5738 (TX) Secondary

2086S0102X Surgical Critical Care Physician Allopathic & Osteopathic Physicians · License M5738 (TX) Secondary

2086S0102X Surgical Critical Care Physician Allopathic & Osteopathic Physicians · License A93582 (CA) Secondary

2086S0102X Surgical Critical Care Physician Allopathic & Osteopathic Physicians · License 49959 (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
188326604	Other	TX	CSHCN ( MEDICAID)
188326603	Medicaid	TX	-

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

What specialty is Mark Gunst?

Mark Gunst is registered in NPPES with the primary taxonomy of Surgical Critical Care Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-02-17.