Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Leslie James Allison, MD

Family Medicine Physician in Hammond, IN · enumerated 2006.

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

National Provider Identifier

1265405534

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Registry record

Entity type Individual (Type 1)

Name Dr. Leslie James Allison

Credential MD

Sex Male

Practice address Hammond, IN, 46324

Phone (219) 763-8112

Fax (219) 764-3251

Enumeration date Feb 8, 2006

Last updated in NPPES Mar 11, 2016

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License J7408 (TX) 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
111937204	Medicaid	TX	-
111937202	Other	TX	MEDICAID
01072872A	Other	IN	STATE LICENSE
164204301	Medicaid	TX	-
4119831	Other	TX	BLUE LINK #
00U53H	Other	-	BLUE CROSS BLUE SHIELD
21643	Other	TX	UTMB
5272075	Other	TX	AETNA
429053	Other	-	WELLCARE
121372	Other	TX	SUPERIOR HEALTH

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 Leslie Allison?

The National Provider Identifier (NPI) for Leslie Allison is 1265405534, a Type 1 (individual) record in the CMS NPPES registry.

Where does Leslie Allison practice?

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

Other providers at this practice address

Browse all →

Vanessa Foster Obstetrics & Gynecology Physician · Hammond, IN NPI 1033101753 Claudette Dandridge Specialist · Hammond, IN NPI 1821101957 Cesar Labitan Family Medicine Physician · Hammond, IN NPI 1629188743 Lawrence Adams General Practice Dentistry · Hammond, IN NPI 1154454346 Mary Ellis Advanced Practice Midwife · Hammond, IN NPI 1306173786 Keith Douts Dentist · Hammond, IN NPI 1700174299 Aditya Shah Family Medicine Physician · Hammond, IN NPI 1578958278

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-03-11.