Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

David G Riehn, D.O.

Q: What is the NPI number for David Riehn?

The National Provider Identifier (NPI) for David Riehn is 1023118981, a Type 1 (individual) record in the CMS NPPES registry.

Anesthesiology Physician in Crystal River, FL · enumerated 2006.

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

National Provider Identifier

1023118981

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Registry record

Entity type Individual (Type 1)

Name David G Riehn

Credential D.O.

Sex Male

Practice address 6201 N Suncoast Blvd, Crystal River, FL, 34428

Phone (352) 795-4008

Enumeration date Sep 22, 2006

Last updated in NPPES Apr 1, 2016

Taxonomy & licenses

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License OS11146 (FL) Primary

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License 5101010556 (MI) Secondary

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

Other identifiers

Identifier	Type	State	Issuer
4471370-11	Medicaid	MI	-
003277000	Medicaid	FL	-
ER333Z	Other	FL	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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does David Riehn practice?

The practice location on file with NPPES is in Crystal River, FL. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for David Riehn?

The National Provider Identifier (NPI) for David Riehn is 1023118981, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-04-01.