Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Derek Grayson, M.D.

Neurology Physician in Warren, MI · enumerated 2016.

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

National Provider Identifier

1932652351

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Registry record

Entity type Individual (Type 1)

Name Dr. Derek Grayson

Credential M.D.

Sex Male

Practice address Warren, MI, 48093

Phone (586) 582-7033

Fax (586) 582-7034

Enumeration date Aug 2, 2016

Last updated in NPPES May 22, 2024

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 4301502795 (MI) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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 Derek Grayson practice?

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

What is the NPI number for Derek Grayson?

The National Provider Identifier (NPI) for Derek Grayson is 1932652351, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-05-22.