Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Robert B Witham, RPH

Pharmacist in Grand Rapids, MI · enumerated 2007.

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

National Provider Identifier

1013049584

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Registry record

Entity type Individual (Type 1)

Name Mr. Robert B Witham

Credential RPH

Sex Male

Practice address 5859 28th St Se, Grand Rapids, MI, 49546

Phone (616) 949-9892

Fax (616) 949-5709

Enumeration date Mar 11, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 5302021924 (MI) Primary

RPH · Registered Pharmacist: A licensed pharmacist registered with a state board of pharmacy. About the RPH 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

What specialty is Robert Witham?

Robert Witham is registered in NPPES with the primary taxonomy of Pharmacist. 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 2007-07-08.