Mallie Dennis, MD
NPI 1942880646 · Psychiatry Physician · Booneville, MS
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mallie Dennis, MD is a Psychiatry Physician provider in Booneville, MS (NPI 1942880646).
Provider details
- NPI number
- 1942880646
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 34904 (MS)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Trazodone Hcl | 39 |
| Sertraline Hcl | 29 |
| Fluoxetine Hcl | 27 |
| Bupropion Hclbrand: Bupropion Xl | 20 |
| Divalproex Sodiumbrand: Divalproex Sodium Er | 19 |
| Desvenlafaxine Succinatebrand: Desvenlafaxine Succinate Er | 18 |
| Gabapentin | 17 |
| Buspirone Hcl | 16 |
| Mirtazapine |
Practice location
Mailing address
Additional practice locations (1)
- 202 N 1st StBooneville, MS 38829-2718Phone: (662) 340-1138Fax: (662) 728-5185
Registry dates
- Enumerated
- 2021-04-08
- Last updated
- 2025-09-30
- Certified
- 2025-09-30
Frequently asked questions
- What is Mallie Dennis's NPI number?
- Mallie Dennis's National Provider Identifier (NPI) is 1942880646, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mallie Dennis's specialty?
- Mallie Dennis is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Mallie Dennis located?
- Mallie Dennis's practice location on file with NPPES is 100 Hospital St, Booneville, MS 38829-3354.
- What is Mallie Dennis's phone number?
- The practice phone number listed in the NPPES registry for Mallie Dennis is (662) 720-5000.
- Does Mallie Dennis accept Medicare?
- Mallie Dennis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mallie Dennis's NPI active?
- Yes — Mallie Dennis's NPI (1942880646) is active in the NPPES registry as of the last update on 2025-09-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.