Mark Allen McGrail, M.D.
Addiction Medicine (Preventive Medicine) Physician · Knoxville, TN
Mark Allen McGrail, M.D. is an addiction medicine (preventive medicine) physician with a practice address in Knoxville, Tennessee, and NPI 1063488831, issued on Feb 23, 2006. Check the license (Tennessee MD30708, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Mark Allen McGrail
- Credential
- M.D.
- Primary taxonomy
- Addiction Medicine (Preventive Medicine) Physician 2083A0300X
- License numbers
- MD30708 TN
T8718 TX
0101276467 VA
Self-reported in NPPES; status is on the state search - Practice location
- 2018 Western Ave, Knoxville, TN 37921
- Phone
- (865) 544-0406
- Enumerated
- Feb 23, 2006
- Record last updated
- May 20, 2025
- Fax
- (865) 544-0480
- Medicaid ID
- 3827523 TN
- Medicare enrollment
- Enrolled (PECOS I20240828005320); accepts Medicare assignment
- Medical or professional school
- Uniformed Services Uhs Fe Hebert School Of Med, 1993
- Entity
- Type 1 · individual
8 nearest addiction medicine (preventive medicine) physician records → All 19 in Tennessee → Look up another NPI →
Also registered at 2018 Western Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Manal Abbas, PHLEBOTOMISTPhlebotomy Technician1801457866
- Melinda Adams, R.N.Registered Nurse1134667785
- Magon Adams Shirley, PSY.D.Student in an Organized Health Care Education/Training Program1518356021
- Pamela Adkins, CNANurse's Aide1780422253
- Deborah Allen, M.D.Internal Medicine Physician1942237474
- Mykenzi Allison, MAStudent in an Organized Health Care Education/Training Program1427948710
Verify Mark Allen McGrail in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license MD30708Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Cherokee Health SystemsKnoxville, TN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Allen McGrail among 19 addiction medicine (preventive medicine) physician records in Tennessee
Mark Allen McGrail, M.D. is one of 19 addiction medicine (preventive medicine) physician records with a practice address in Tennessee. 100% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 11% of them.
- NPI issued2006 · 11% of these records are older, 58% newer
- In a Medicare fileYes · 100% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated1993 · median 1998 among the 14 with a school on file
- Record last updated2025 · 16% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2083A0300X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Addiction Medicine (Preventive Medicine) Physician providers in Tennessee
There are 19 addiction medicine (preventive medicine) physician records in Tennessee.
All 19 in Tennessee → Every provider in Knoxville → Addiction Medicine (Preventive Medicine) Physician nationwide →
The 8 addiction medicine (preventive medicine) physician records with the nearest ZIP codes
- David Crabtree, M.D.Knoxville, TN 379321881080638
- Jared Matthews, M.D.Memphis, TN 381191922366459
- Peggy O'Cain, MDMemphis, TN 381191356392567
- Emily Hahn, M.D.Germantown, TN 381381811190796
- Ankur Bhargava, MD, MPH, MSCBMIJohnson City, TN 376041982066700
- Kamran Hayel-Moghadam, M.D.Johnson City, TN 376041437344595
- Maria Zambrano, DOJohnson City, TN 376041235690538
- Steven Weaver, MDJackson, TN 383051295704393
Common questions
What is Mark Allen McGrail, M.D.'s NPI number?
Mark Allen McGrail, M.D.'s National Provider Identifier (NPI) is 1063488831, issued on Feb 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Allen McGrail, M.D. located?
The NPPES record lists a practice address at 2018 Western Ave, Knoxville, TN, 37921. Phone: (865) 544-0406. Providers update this record themselves, so call before visiting.
How can I verify Mark Allen McGrail, M.D.'s license?
NPPES lists Tennessee license number MD30708, as entered by the provider. Search the Tennessee Board of Medical Examiners at https://www.tn.gov/health/licensure/me.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.