Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Douglas Harley Slater, MD

Pediatrics Physician in Grayling, MI · enumerated 2006.

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

National Provider Identifier

1134152382

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Registry record

Entity type Individual (Type 1)

Name Douglas Harley Slater

Credential MD

Sex Male

Practice address 1250 E Michigan Ave, Grayling, MI, 49738

Phone (989) 348-0550

Fax (989) 348-6749

Enumeration date Jul 9, 2006

Last updated in NPPES Aug 23, 2007

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 4301406865 (MI) Secondary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 4301406865 (MI) Primary

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

Other identifiers

Identifier	Type	State	Issuer
2982265	Medicaid	MI	-
3389713	Medicaid	MI	-
4120160	Medicaid	MI	-

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

How do I verify Douglas Slater's NPI record?

Cross-check NPI 1134152382 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1134152382 active?

Yes, as of the latest NPPES snapshot, NPI 1134152382 is active (record last updated 2007-08-23).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-08-23.