Mark Jason Grimes, MD
Internal Medicine Physician · Corinth, MS
Mark Jason Grimes, MD is an internal medicine physician with a practice address in Corinth, Mississippi, and NPI 1568140713, issued on Jul 7, 2023. Check the license (Mississippi T-5116, as entered in NPPES) on the Mississippi State Board of Medical Licensure; the Medicare figures below come from public CMS files.
- Name
- Mark Jason Grimes
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- T-5116 MS
Self-reported in NPPES; status is on the state search - Practice location
- 611 Alcorn Dr, Corinth, MS 38834
- Phone
- (662) 293-1000
- Enumerated
- Jul 7, 2023
- Record last updated
- Jul 7, 2023
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 972 in Mississippi → Look up another NPI →
Also registered at 611 Alcorn Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mark Jason Grimes in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMississippi State Board of Medical Licensure
Search for license T-5116Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average internal medicine physician in 2024
258 Medicare Part D claims for 78 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Pantoprazole Sodium15 claims
- Amlodipine Besylate13 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.
Industry payments in 2024: $29.55
2 payments; by number, the most common kind was food and beverage; the largest payer was Bayer Healthcare Pharmaceuticals Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Mark Jason Grimes among 972 internal medicine physician records in Mississippi
Mark Jason Grimes, MD is one of 972 internal medicine physician records with a practice address in Mississippi. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 83% of them.
- NPI issued2023 · 83% of these records are older, 12% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2023 · 52% 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 Mississippi practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
58 internal medicine physician records list a practice address in Corinth
They are 58 of the 555 NPPES records with a practice address in Corinth, and 972 internal medicine physician records in Mississippi.
All 972 in Mississippi → Every provider in Corinth → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Marissa Cruz, D.O.Corinth, MS 388341316108756
- Michael Hawley, D.O.Corinth, MS 388341174872824
- Leah McIntosh, DOCorinth, MS 388341235571001
- Robert McKinney, MDCorinth, MS 388341861485179
- Seger Morris, D.O.Corinth, MS 388341487918900
- Valerie Norton, D.O.Corinth, MS 388341770855173
- Timothy Noyes, M.D.Corinth, MS 388341649294042
- David Pizzimenti, DOCorinth, MS 388341265517056
Common questions
What is Mark Jason Grimes, MD's NPI number?
Mark Jason Grimes, MD's National Provider Identifier (NPI) is 1568140713, issued on Jul 7, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Mark Jason Grimes, MD located?
The NPPES record lists a practice address at 611 Alcorn Dr, Corinth, MS, 38834. Phone: (662) 293-1000. Providers update this record themselves, so call before visiting.
How can I verify Mark Jason Grimes, MD's license?
NPPES lists Mississippi license number T-5116, as entered by the provider. Search the Mississippi State Board of Medical Licensure at https://www.msbml.ms.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark Jason Grimes, MD prescribe under Medicare Part D?
In 2024, Mark Jason Grimes, MD had 258 Medicare Part D claims for 78 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.