Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Douglas H Grier, MD

Urology Physician in Bristol, TN · enumerated 2006.

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

National Provider Identifier

1922035922

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Registry record

Entity type Individual (Type 1)

Name Dr. Douglas H Grier

Credential MD

Sex Male

Practice address 1 Medical Park Blvd, Bristol, TN, 37620

Phone (423) 844-1121

Enumeration date Jun 26, 2006

Last updated in NPPES Sep 11, 2024

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License MD00028793 (WA) Secondary

208800000X Urology Physician Allopathic & Osteopathic Physicians · License 35C.001452 (OH) Secondary

208800000X Urology Physician Allopathic & Osteopathic Physicians · License 01090667A (IN) 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
340006244	Other	WA	RAILROAD MEDICARE

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 Grier's NPI record?

Cross-check NPI 1922035922 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1922035922 active?

Yes, as of the latest NPPES snapshot, NPI 1922035922 is active (record last updated 2024-09-11).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-09-11.