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

Dr. Randall Mark Leja, D.O.

Pediatrics Physician in Grand Rapids, MI · enumerated 2012 · practices at Grand Rapids Medical Education Partners.

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

National Provider Identifier

1891058624

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Registry record

Entity type Individual (Type 1)
Name Dr. Randall Mark Leja
Credential D.O.
Sex Male
Practice address Grand Rapids, MI, 49503
Phone (616) 267-0073
Enumeration date Jun 18, 2012
Last updated in NPPES Jun 18, 2012

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

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 5101019817 (MI) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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.

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Frequently asked questions

What is the NPI number for Randall Leja?
The National Provider Identifier (NPI) for Randall Leja is 1891058624, a Type 1 (individual) record in the CMS NPPES registry.
Where does Randall Leja practice?
The practice location on file with NPPES is in Grand Rapids, MI. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-06-18.