Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Greg Mark Booth, MD PHD

Q: What is the NPI number for Greg Booth?

The National Provider Identifier (NPI) for Greg Booth is 1063674174, a Type 1 (individual) record in the CMS NPPES registry.

Internal Medicine Physician in Hampstead, MD · enumerated 2008.

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

National Provider Identifier

1063674174

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Registry record

Entity type Individual (Type 1)

Name Dr. Greg Mark Booth

Credential MD PHD

Sex Male

Practice address 4231 N Woods Trl, Hampstead, MD, 21074

Phone (410) 374-9391

Fax (410) 871-7967

Enumeration date Jun 30, 2008

Last updated in NPPES Aug 26, 2025

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License D0077059 (MD) Primary

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

What is the NPI number for Greg Booth?

The National Provider Identifier (NPI) for Greg Booth is 1063674174, a Type 1 (individual) record in the CMS NPPES registry.

Where does Greg Booth practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-08-26.