Gary Merlin Mason, M.D.
Obstetrics & Gynecology Physician · Maryville, TN
Gary Merlin Mason, M.D. is an obstetrics & gynecology physician with a practice address in Maryville, Tennessee, and NPI 1033172481, issued on Apr 7, 2006. Check the license (Tennessee MD28318, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Gary Merlin Mason
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- MD28318 TN
Self-reported in NPPES; status is on the state search - Practice location
- 1503 E Lamar Alexander Pkwy, Maryville, TN 37804
- Phone
- (865) 980-5290
- Enumerated
- Apr 7, 2006
- Record last updated
- Apr 19, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (865) 980-5295
- Medicaid ID
- 1504791 TN
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 815 in Tennessee → Look up another NPI →
Also registered at 1503 E Lamar Alexander Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Stevan HartmanFamily Medicine Physician1720604689
- Jaclyn Hone, MDFamily Medicine Physician1982644506
- Walter Novikoff, DOFamily Medicine Physician1801974225
- Kevin Turner, M.D.Family Medicine Physician1508822495
Verify Gary Merlin Mason in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license MD28318Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 79.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Gary Merlin Mason among 815 obstetrics & gynecology physician records in Tennessee
Gary Merlin Mason, M.D. is one of 815 obstetrics & gynecology physician records with a practice address in Tennessee. 77% 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 18% of them.
- NPI issued2006 · 18% of these records are older, 47% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 64% of these records are
- Record last updated2019 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
17 obstetrics & gynecology physician records list a practice address in Maryville
They are 17 of the 1,317 NPPES records with a practice address in Maryville, and 815 obstetrics & gynecology physician records in Tennessee.
All 815 in Tennessee → Every provider in Maryville → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Kimberly Ballard, MDMaryville, TN 378041851360812
- Kimberly Collins, MDMaryville, TN 378041528037348
- Dale Elmore, M.D.Maryville, TN 378041649232513
- Samuel Evans, M.D.Maryville, TN 378041063581932
- Tasheema Fair, M.DMaryville, TN 378041164613816
- Nancy Garza, MDMaryville, TN 378041104921469
- Annalysa Johnson, D.O.Maryville, TN 378041306101282
- Elizabeth Lebrun, MDMaryville, TN 378041326057381
Common questions
What is Gary Merlin Mason, M.D.'s NPI number?
Gary Merlin Mason, M.D.'s National Provider Identifier (NPI) is 1033172481, issued on Apr 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gary Merlin Mason, M.D. located?
The NPPES record lists a practice address at 1503 E Lamar Alexander Pkwy, Maryville, TN, 37804. Phone: (865) 980-5290. Providers update this record themselves, so call before visiting.
How can I verify Gary Merlin Mason, M.D.'s license?
NPPES lists Tennessee license number MD28318, 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.
What is Gary Merlin Mason, M.D.'s MIPS final score?
The 2023 MIPS final score is 79.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.