Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Douglas L Clark, MD

Radiation Oncology Physician in Grand Island, NE · enumerated 2006.

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

National Provider Identifier

1801982939

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Douglas L Clark

Credential MD

Sex Male

Practice address 2116 W Faidley Ave, Grand Island, NE, 68803

Phone (308) 398-5996

Fax (308) 398-5333

Enumeration date Oct 5, 2006

Last updated in NPPES Sep 3, 2014

Taxonomy & licenses

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License 26077 (OK) Secondary

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License 12230 (ND) Secondary

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License 35899 (WA) Secondary

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License 27361 (NE) 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
200134920A	Medicaid	OK	-

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 Douglas Clark practice?

The practice location on file with NPPES is in Grand Island, NE. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Douglas Clark?

The National Provider Identifier (NPI) for Douglas Clark is 1801982939, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-09-03.