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Dr. William Travis Cain, MD

Allergy & Immunology Physician in Hermitage, TN · enumerated 2005.

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

National Provider Identifier

1821083973

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Registry record

Entity type Individual (Type 1)
Name Dr. William Travis Cain
Credential MD
Sex Male
Practice address 5045 Old Hickory Blvd, Suite 201, Hermitage, TN, 37076
Phone (615) 475-0148
Fax (615) 475-0151
Enumeration date Sep 14, 2005
Last updated in NPPES Mar 10, 2016

Taxonomy & licenses

174400000X Specialist Other Service Providers · License MD38400 (TN) Secondary
207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians · License 38400 (TN) 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.

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Frequently asked questions

Is NPI 1821083973 active?
Yes, as of the latest NPPES snapshot, NPI 1821083973 is active (record last updated 2016-03-10).
How do I verify William Cain's NPI record?
Cross-check NPI 1821083973 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-03-10.