Individual Healthcare Provider
Mark Allen Mcgrail, M.D.
Provider's NPPES record last updated: May 20, 2025
Overview
- Entity Type
- Individual Healthcare Provider
- NPI
- 1063488831
- Primary Specialty
- Preventive Medicine — Addiction Medicine
- Practice Location
- Knoxville, Tennessee
- 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 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 18, 2026, 12:57 PM 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
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.
Searches OIG LEIE and SAM.gov by name and reviews every potential match.
Specialties & Taxonomies
- Primary
Preventive Medicine
Addiction Medicine
Allopathic & Osteopathic Physicians
A physician engaged in the subspecialty practice of Addiction Medicine who specializes in the prevention, evaluation, diagnosis, treatment, and recovery of persons with the disease of addiction.
Taxonomy code 2083A0300X Family Medicine
Allopathic & Osteopathic Physicians
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
Taxonomy code 207Q00000XFamily Medicine
Addiction Medicine
Allopathic & Osteopathic Physicians
A family medicine physician who specializes in the diagnosis and treatment of addictions.
Taxonomy code 207QA0401X
Provider-Reported License Information
- Preventive Medicine (Tennessee)
- MD30708
- Family Medicine (Texas)
- T8718
- Family Medicine (Virginia)
- 0101276467
- Family Medicine (Tennessee)
- MD30708
Practice Locations
Practice Location
2018 Western Ave
Knoxville, Tennessee 37921-5718
Phone: (865) 544-0406
Additional Practice Location
486 Archie Ct
Clarksville, Tennessee 37043-2027
Phone: (931) 801-5662
Record Information
- Enumeration Date
- February 23, 2006
- Provider's NPPES Record Last Updated
- May 20, 2025
- Certification Date
- May 20, 2025
- NPISignal NPPES Dataset
- August 2026
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