Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Nathan David Cass, MD

Otology & Neurotology Physician in Lexington, KY · enumerated 2014 · practices at University of Kentucky.

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

National Provider Identifier

1518385566

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Registry record

Entity type Individual (Type 1)

Name Nathan David Cass

Credential MD

Sex Male

Practice address 740 S Limestone St, Lexington, KY, 40536

Phone (859) 257-5405

Fax (859) 323-5483

Enumeration date Apr 6, 2014

Last updated in NPPES Jun 20, 2022

Taxonomy & licenses

207Y00000X Otolaryngology Physician Allopathic & Osteopathic Physicians · License 4301119066 (MI) Secondary

207YX0901X Otology & Neurotology Physician Allopathic & Osteopathic Physicians · License 56685 (KY) 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 specialty is Nathan Cass?

Nathan Cass is registered in NPPES with the primary taxonomy of Otology & Neurotology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

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Ralph Amato Clinical Genetics (M.D.) Physician · Lexington, KY NPI 1972537405 William Adkisson Surgical Physician Assistant · Lexington, KY NPI 1659305746 Louis Bezold Pediatric Cardiology Physician · Lexington, KY NPI 1235155433 Joanne Brown Family Nurse Practitioner · Lexington, KY NPI 1821183500 Alba Morales Pozzo Pediatric Endocrinology Physician · Lexington, KY NPI 1346330909 Kathryn Thrailkill Pediatric Endocrinology Physician · Lexington, KY NPI 1255421814 Lynda Ison Psychologist · Lexington, KY NPI 1861568156 Andrea Gorringe Medical Physician Assistant · Lexington, KY NPI 1194893297

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-06-20.