NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William Haymond Cook, M.D.

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in Montgomery, AL · enumerated 2006.

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

National Provider Identifier

1598799850

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Registry record

Entity type Individual (Type 1)
Name William Haymond Cook
Credential M.D.
Sex Male
Practice address 2055 E South Blvd Ste 603, Montgomery, AL, 36116
Phone (334) 747-8800
Enumeration date Jul 10, 2006
Last updated in NPPES Aug 8, 2023

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 35081563C (OH) Secondary
208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 37727 (KY) Secondary
208G00000X Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Allopathic & Osteopathic Physicians · License 35081563C (OH) Secondary
208G00000X Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Allopathic & Osteopathic Physicians · License 37727 (KY) Secondary
208G00000X Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Allopathic & Osteopathic Physicians · License 26039 (AL) 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
000000239939 Other - ANTHEM
2363517 Medicaid OH -
1800451 Other - UNITED HEALTHCARE
81563 Other - CHOICE CARE/HUMANA

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 William Cook's NPI record?
Cross-check NPI 1598799850 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1598799850 active?
Yes, as of the latest NPPES snapshot, NPI 1598799850 is active (record last updated 2023-08-08).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-08-08.