Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Earl Robert Hartwig, MD

Pediatrics Physician in Detroit, MI · enumerated 2006.

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

National Provider Identifier

1588601074

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Registry record

Entity type Individual (Type 1)

Name Earl Robert Hartwig

Credential MD

Sex Male

Practice address Childrens Hospital Mi Emergency Med, 3901 Beaubien Er Dept - Main Building, Detroit, MI, 48201

Phone (313) 745-5260

Enumeration date Jun 1, 2006

Last updated in NPPES Nov 1, 2007

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 4301407502 (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

What specialty is Earl Hartwig?

Earl Hartwig is registered in NPPES with the primary taxonomy of Pediatrics Physician. 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 2007-11-01.