Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gregory Philip Henderson, M.D.

MOHS-Micrographic Surgery Physician in Newport Beach, CA · enumerated 2009.

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

National Provider Identifier

1619109519

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Registry record

Entity type Individual (Type 1)

Name Gregory Philip Henderson

Credential M.D.

Sex Male

Practice address 1441 Avocado Ave Ste 409, Newport Beach, CA, 92660

Phone (949) 640-4501

Enumeration date Aug 11, 2009

Last updated in NPPES Jun 18, 2020

Taxonomy & licenses

207ND0101X MOHS-Micrographic Surgery Physician Allopathic & Osteopathic Physicians · License A125261 (CA) Primary

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License A125261 (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
ENROLLED	Medicaid	MN	-
P00940083	Other	MN	RAILROAD MEDICARE
ENROLLED	Medicaid	IA	-

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 Gregory Henderson 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 Gregory Henderson?

The National Provider Identifier (NPI) for Gregory Henderson is 1619109519, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Jeanne M. Spudick, D.O., A Medical Corporation Infectious Disease Physician · Newport Beach, CA NPI 1164596755 David C. Herzlinger,M.D.,A Professional Corp Specialist · Newport Beach, CA NPI 1710186085 Fatimeh Abdallah Physician Assistant · Newport Beach, CA NPI 1487002218 Shibani Shah Nurse Practitioner · Newport Beach, CA NPI 1326719063

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-06-18.