Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Michael Gray, MD

Q: What is the NPI number for Michael Gray?

The National Provider Identifier (NPI) for Michael Gray is 1003045915, a Type 1 (individual) record in the CMS NPPES registry.

Hospitalist Physician in Newport Beach, CA · enumerated 2009.

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

National Provider Identifier

1003045915

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Registry record

Entity type Individual (Type 1)

Name Dr. Michael Gray

Credential MD

Sex Male

Practice address 1 Hoag Dr, Newport Beach, CA, 92663

Phone (949) 610-7245

Fax (657) 241-7720

Enumeration date Jul 13, 2009

Last updated in NPPES May 11, 2017

Taxonomy & licenses

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License A112324 (CA) Primary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License A112324 (CA) Secondary

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
P01503954	Other	CA	MEDICARE RAILROAD

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Michael Gray practice?

The practice location on file with NPPES is in Newport Beach, CA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Michael Gray?

The National Provider Identifier (NPI) for Michael Gray is 1003045915, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-05-11.