Mallie Marie Dennis, MD
Psychiatry Physician · Booneville, MS
Mallie Marie Dennis, MD is a psychiatry physician with a practice address in Booneville, Mississippi, and NPI 1942880646, issued on Apr 8, 2021. Check the license (Mississippi 34904, as entered in NPPES) on the Mississippi State Board of Medical Licensure; the Medicare figures below come from public CMS files.
- Name
- Mallie Marie Dennis
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 34904 MS
Self-reported in NPPES; status is on the state search - Practice location
- 100 Hospital St, Booneville, MS 38829
- Phone
- (662) 720-5000
- Enumerated
- Apr 8, 2021
- Record last updated
- Sep 30, 2025
- Medicare enrollment
- Enrolled (PECOS I20250919003605); accepts Medicare assignment
- Medical or professional school
- University Of Tennessee, Hsc, College Of Medicine, 2021
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 272 in Mississippi → Look up another NPI →
Also registered at 100 Hospital St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Felton Combest, MDEmergency Medicine Physician1356399513
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Verify Mallie Marie Dennis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMississippi State Board of Medical Licensure
Search for license 34904Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
60% fewer Medicare Part D claims than the average psychiatry physician in 2024
400 Medicare Part D claims for 50 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Trazodone Hcl39 claims
- Sertraline Hcl29 claims
- Fluoxetine Hcl27 claims
- Bupropion Xl20 claims
- Divalproex Sodium Er19 claims
- Desvenlafaxine Succinate Er18 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.
Bills Medicare through one group practice
- Baptist Memorial Medical Group, Inc.Booneville, MS
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mallie Marie Dennis among 272 psychiatry physician records in Mississippi
Mallie Marie Dennis, MD is one of 272 psychiatry physician records with a practice address in Mississippi. 64% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 77% of them.
- NPI issued2021 · 77% of these records are older, 19% newer
- In a Medicare fileYes · 64% of these records are
- In the CMS Doctors and Clinicians fileYes · 41% of these records are
- Graduated2021 · median 2004 among the 111 with a school on file
- Record last updated2025 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Mississippi practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatry Physician providers in Mississippi
There are 272 psychiatry physician records in Mississippi.
All 272 in Mississippi → Every provider in Booneville → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Jan Osborne, M.D.Corinth, MS 388341992789309
- June Powell, MDCorinth, MS 388341235194960
- Aracelis Lu Brea, M.D.Tupelo, MS 388041164723318
- Dilyana Milev, M.D.Tupelo, MS 388041962693291
- Frankie Stanley, M.D.Tupelo, MS 388041053625012
- Joanne Turner, MDTupelo, MS 388041346340858
- Alena Tyre-Littlejohn, MDTupelo, MS 388041578654851
- Marianne Barnes, MDTupelo, MS 388011962440230
Common questions
What is Mallie Marie Dennis, MD's NPI number?
Mallie Marie Dennis, MD's National Provider Identifier (NPI) is 1942880646, issued on Apr 8, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Mallie Marie Dennis, MD located?
The NPPES record lists a practice address at 100 Hospital St, Booneville, MS, 38829. Phone: (662) 720-5000. Providers update this record themselves, so call before visiting.
How can I verify Mallie Marie Dennis, MD's license?
NPPES lists Mississippi license number 34904, 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 Mallie Marie Dennis, MD prescribe under Medicare Part D?
In 2024, Mallie Marie Dennis, MD had 400 Medicare Part D claims for 50 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.