Mary Marschner, M.D.
Internal Medicine Physician · Nashville, TN
Mary Marschner, M.D. is an internal medicine physician with a practice address in Nashville, Tennessee, and NPI 1801279476, issued on Jul 1, 2015. Check the license (Tennessee 68912, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Mary Marschner
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 68912 TN
042103606 MA
Self-reported in NPPES; status is on the state search - Practice location
- 3601 The Vanderbilt Clinic, Nashville, TN 37232
- Phone
- (615) 322-3000
- Enumerated
- Jul 1, 2015
- Record last updated
- Oct 26, 2023
- Medicare enrollment
- Enrolled (PECOS I20231013000311); accepts Medicare assignment
- Medical or professional school
- University Of South Alabama College Of Medicine, 2015
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,596 in Tennessee → Look up another NPI →
Also registered at 3601 The Vanderbilt Clinic
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mary Marschner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license 68912Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average internal medicine physician in 2024
95 Medicare Part D claims for 38 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
One hospital affiliation
- Vanderbilt University Medical CenterNashville, TN · Acute Care Hospitals5 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Mary Marschner among 2,596 internal medicine physician records in Tennessee
Mary Marschner, M.D. is one of 2,596 internal medicine physician records with a practice address in Tennessee. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 80% of them.
- NPI issued2015 · 80% of these records are older, 18% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2015 · median 2003 among the 1,705 with a school on file
- Record last updated2023 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
613 internal medicine physician records list a practice address in Nashville
They are 613 of the 24,357 NPPES records with a practice address in Nashville, and 2,596 internal medicine physician records in Tennessee.
All 2,596 in Tennessee → Every provider in Nashville → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Billy Copeland, M.D.Nashville, TN 372321669473716
- Nancy Davis, MDNashville, TN 372321932153244
- Jennifer DebrulerNashville, TN 372321588656524
- Tiffany Hines, MDNashville, TN 372321164468906
- Melissa Hixson, MDNashville, TN 372321407843089
- Martha Leonard, MDNashville, TN 372321699717819
- Michael Matheny, MD, MS, MPHNashville, TN 372321275579427
- Harvey Murff, M.D.Nashville, TN 372321063445641
Common questions
What is Mary Marschner, M.D.'s NPI number?
Mary Marschner, M.D.'s National Provider Identifier (NPI) is 1801279476, issued on Jul 1, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Mary Marschner, M.D. located?
The NPPES record lists a practice address at 3601 The Vanderbilt Clinic, Nashville, TN, 37232. Phone: (615) 322-3000. Providers update this record themselves, so call before visiting.
How can I verify Mary Marschner, M.D.'s license?
NPPES lists Tennessee license number 68912, 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.
How much does Mary Marschner, M.D. prescribe under Medicare Part D?
In 2024, Mary Marschner, M.D. had 95 Medicare Part D claims for 38 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.