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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

LARRY HALE DAY MD
NPI 1285695288
Otolaryngology - Otolaryngic Allergy in Hattiesburg, MS

Active since March 29, 2006
107 MILLSAPS DRIVE, HATTIESBURG, MS 39402(601) 268-5131(601) 268-5138 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jul 13, 2026, Sep 11, 2025 (2 updates tracked since 2025).

About Larry Hale Day Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

LARRY HALE DAY MD (NPI 1285695288) is an individual otolaryngic allergy provider in Hattiesburg, Mississippi, licensed in Mississippi (04659) and active in the NPI registry since March 2006.

NPPES Registry Identity

NPI1285695288
Entity TypeIndividualMale
Primary Taxonomy207YX0602X
Provider Legal NameLARRY HALE DAYCredential: MD
Location Address107 MILLSAPS DRIVEHattiesburg, MS 39402
Mailing AddressPost Office Box 17829Hattiesburg, MS 39404-7829 · (601) 268-5131 · Fax (601) 268-5138
Phone(601) 268-5131
Fax(601) 268-5138
Sole ProprietorNo
Enumeration DateMarch 29, 2006
Last NPPES UpdateJuly 13, 20262 updates tracked since enumeration
✔ NPI 1285695288 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyOtolaryngology · Otolaryngic AllergyAllopathic & Osteopathic Physicians
Taxonomy Code207YX0602X
License✔ Licensed in MS · 04659
Definition

An otolaryngologist who specializes in the diagnosis and treatment of otolaryngic allergies and other allergic diseases.

Also ListedOtolaryngologyTaxonomy 207Y00000X · License 04659 (MS)
107 MILLSAPS DRIVE, Hattiesburg, MS 39402
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Other Identifiers 1

Medicaid00011998MS

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Larry Day's NPI number?

The NPI number for Larry Day is 1285695288. It was assigned to this individual provider in the NPPES registry on March 29, 2006.

Where is Larry Day located?

Larry Day practices at 107 Millsaps Drive, Hattiesburg, MS 39402. The listed phone number is (601) 268-5131.

What is Larry Day's specialty?

The primary specialty registered for this NPI is Otolaryngology, specializing in Otolaryngic Allergy, with taxonomy code 207YX0602X.

When was this NPI record last updated?

The NPPES record for Larry Day was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.