Mark Mcgrail, M.D.
NPI 1063488831 · Addiction Medicine (Preventive Medicine) Physician · Knoxville, TN
Enrolled with Medicare as Practitioner - Addiction Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Mcgrail, M.D. is a Addiction Medicine (Preventive Medicine) Physician provider in Knoxville, TN (NPI 1063488831).
Provider details
- NPI number
- 1063488831
- Entity type
- Individual
- Primary specialty
- Addiction Medicine (Preventive Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- T8718 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (1)
- 486 Archie CtClarksville, TN 37043-2027Phone: (931) 801-5662
Registry dates
- Enumerated
- 2006-02-23
- Last updated
- 2025-05-20
- Certified
- 2025-05-20
Frequently asked questions
- What is Mark Mcgrail's NPI number?
- Mark Mcgrail's National Provider Identifier (NPI) is 1063488831, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Mcgrail's specialty?
- Mark Mcgrail is listed in the NPPES registry with a primary specialty of Addiction Medicine (Preventive Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Mcgrail located?
- Mark Mcgrail's practice location on file with NPPES is 2018 Western Ave, Knoxville, TN 37921-5718.
- What is Mark Mcgrail's phone number?
- The practice phone number listed in the NPPES registry for Mark Mcgrail is (865) 544-0406.
- Does Mark Mcgrail accept Medicare?
- Mark Mcgrail is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Mcgrail's NPI active?
- Yes — Mark Mcgrail's NPI (1063488831) is active in the NPPES registry as of the last update on 2025-05-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.