Mario Marquist Ray, M.D.
Hospitalist Physician · Memphis, TN
Mario Marquist Ray, M.D. is a hospitalist physician with a practice address in Memphis, Tennessee, and NPI 1326128364, issued on Oct 16, 2006. Check the license (Tennessee 39663, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Mario Marquist Ray
- Credential
- M.D.
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- 39663 TN
Self-reported in NPPES; status is on the state search - Practice location
- 877 Jefferson Ave, Memphis, TN 38103
- Phone
- (901) 545-8774
- Enumerated
- Oct 16, 2006
- Record last updated
- Aug 14, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20070725000601); accepts Medicare assignment
- Medical or professional school
- University Of Tennessee, Hsc, College Of Medicine, 2003
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 426 in Tennessee → Look up another NPI →
Also registered at 877 Jefferson Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Hina Akbar, M.D.Hospitalist Physician1871909671
Verify Mario Marquist Ray in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license 39663Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
23% fewer Medicare Part D claims than the average hospitalist physician in 2024
403 Medicare Part D claims for 95 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 52 claims were for opioids.
Most prescribed
- Oxycodone Hcl45 claims
- Gabapentin33 claims
- Methocarbamol28 claims
- Amlodipine Besylate18 claims
- Tamsulosin Hcl14 claims
- Atorvastatin Calcium12 claims
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.
The practice group's MIPS final score for 2023 (Medicare payment program): 75.1 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).
Bills Medicare through one group practice
- UT Regional One Physicians IncMemphis, TN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mario Marquist Ray among 426 hospitalist physician records in Tennessee
Mario Marquist Ray, M.D. is one of 426 hospitalist physician records with a practice address in Tennessee. 89% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 74% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 84% of these records are
- Graduated2003 · median 2012 among the 356 with a school on file
- Record last updated2017 · 39% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in Tennessee
There are 426 hospitalist physician records in Tennessee.
All 426 in Tennessee → Every provider in Memphis → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Hina Akbar, M.D.Memphis, TN 381031871909671
- Kristen Bettin, M.D.Memphis, TN 381031194043661
- Desiree Burroughs-Ray, MDMemphis, TN 381031689060907
- Emilee Dobish, M.D.Memphis, TN 381031477845451
- Natalie Dunlap, D.O.Memphis, TN 381031144649344
- Elisha McCoy, M.D.Memphis, TN 381031104099258
- Prashant Mishra, MDMemphis, TN 381031730743832
- Ruchi Patel, D.O.Memphis, TN 381031770961211
Common questions
What is Mario Marquist Ray, M.D.'s NPI number?
Mario Marquist Ray, M.D.'s National Provider Identifier (NPI) is 1326128364, issued on Oct 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mario Marquist Ray, M.D. located?
The NPPES record lists a practice address at 877 Jefferson Ave, Memphis, TN, 38103. Phone: (901) 545-8774. Providers update this record themselves, so call before visiting.
How can I verify Mario Marquist Ray, M.D.'s license?
NPPES lists Tennessee license number 39663, 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 Mario Marquist Ray, M.D. prescribe under Medicare Part D?
In 2024, Mario Marquist Ray, M.D. had 403 Medicare Part D claims for 95 beneficiaries; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
What is Mario Marquist Ray, M.D.'s MIPS final score?
The 2023 MIPS final score is 75.1 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.