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NPISignal

Individual Healthcare Provider

John C. Allen, M.D.

NPI Record: ActiveInternal Medicine — Hematology & Oncology
NPI1417275652
Oxford, Mississippi

Provider's NPPES record last updated: June 4, 2021

Overview

Entity Type
Individual Healthcare Provider
NPI
1417275652
Primary Specialty
Internal Medicine — Hematology & Oncology
Practice Location
Oxford, Mississippi
Sole Proprietor
No

Federal Screening

NPISignal checked this NPI against federal exclusion sources. Results below are based on the NPI number itself — an identifier match, not a name match.

List of Excluded Individuals/Entities (LEIE)

HHS Office of Inspector General

No potential match identified

No potential match was identified in NPISignal's indexed List of Excluded Individuals/Entities (LEIE) records as of 2026-09-10.

Source data
September 10, 2026
Records indexed
84,001
Screened
Sep 20, 2026, 2:32 AM UTC

This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.

SAM.gov Exclusions

U.S. General Services Administration

Not checked

SAM.gov Exclusions was not checked.

SAM.gov screening is not configured on this deployment. No SAM check has been performed.

Screened
Not checked

This is an NPI-based check only. NPISignal does not publish name-based exclusion matches on a provider profile. A shared or similar name is a lead that requires human review, not an identification, and this page is not the place to make one. Run a name-based screening below to see potential matches with the reasons for each.

This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.

Run a name-based screening

Searches OIG LEIE and SAM.gov by name and reviews every potential match.

Specialties & Taxonomies

  • Internal Medicine

    Hematology & Oncology

    Allopathic & Osteopathic Physicians

    Primary

    An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

    Taxonomy code 207RH0003X
  • Emergency Medicine

    Emergency Medical Services

    Allopathic & Osteopathic Physicians

    An emergency medicine physician who specializes in non-hospital based emergency medical services (e.g., disaster site, accident scene, transport vehicle, etc.) to provide pre-hospital assessment, treatment, and transport patients.

    Taxonomy code 207PE0004X
  • Internal Medicine

    Allopathic & Osteopathic Physicians

    A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

    Taxonomy code 207R00000X

Provider-Reported License Information

Internal Medicine (Mississippi)
24648
Emergency Medicine (Tennessee)
51509
Internal Medicine (Tennessee)
51509
Internal Medicine (Virginia)
0101254562
License numbers are reported by the provider to NPPES and are not independently verified by NPISignal against any state licensing board. Confirm current license status directly with the issuing state board.

Practice Locations

Practice Location

504 Azalea Dr Ste A

Oxford, Mississippi 38655-5397

Phone: (662) 236-7738

Additional Practice Location

301 S 28th Ave

Hattiesburg, Mississippi 39401-7233

Phone: (601) 261-1700

Fax: (601) 288-8290

Additional Practice Location

1300 Sunset Dr Ste Q

Grenada, Mississippi 38901-4084

Phone: (662) 294-9101

Fax: (662) 294-9104

Record Information

Enumeration Date
May 12, 2010
Provider's NPPES Record Last Updated
June 4, 2021
Certification Date
June 4, 2021
NPISignal NPPES Dataset
August 2026

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