Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mackenzie Rainier Cook, MD

Trauma Surgery Physician in Longview, WA · enumerated 2010.

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

National Provider Identifier

1497070486

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Mackenzie Rainier Cook

Credential MD

Sex Male

Practice address 1615 Delaware St, Longview, WA, 98632

Phone (360) 501-3500

Fax (360) 501-3555

Enumeration date Apr 1, 2010

Last updated in NPPES Aug 26, 2026

Taxonomy & licenses

2086S0127X Trauma Surgery Physician Allopathic & Osteopathic Physicians · License MD184572 (OR) Secondary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License MD184572 (OR) Secondary

2086S0102X Surgical Critical Care Physician Allopathic & Osteopathic Physicians · License MD184572 (OR) Secondary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 60642364 (WA) Secondary

2086S0127X Trauma Surgery Physician Allopathic & Osteopathic Physicians · License 60642364 (WA) Primary

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

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Mackenzie Cook?

The National Provider Identifier (NPI) for Mackenzie Cook is 1497070486, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mackenzie Cook practice?

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

Other providers at this practice address

Browse all →

Lan Pham Internal Medicine Physician · Longview, WA NPI 1548264252 Tsz-Ming Chow Neurology Physician · Longview, WA NPI 1689679714 Lisa Evans Family Medicine Physician · Longview, WA NPI 1891790580 Lawrence Neville Neurology Physician · Longview, WA NPI 1134124639 R. Hughey Internal Medicine Physician · Longview, WA NPI 1316943590 Linda Johnston Adult Health Nurse Practitioner · Longview, WA NPI 1376549337 Leena Carriere Anesthesiology Physician · Longview, WA NPI 1982600805 Michael Bartlett Family Medicine Physician · Longview, WA NPI 1356348502

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-08-26.