Doctor profile · Federal record

Dr. Demetrius Williams, PMHNP

Psychiatric/Mental Health Nurse Practitioner · Mandeville, LA

  • NPI 1578296489
  • 4 yrs on file
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1150 W Causeway Approach
Mandeville, LA 704713038
(866) 530-6111
Mailing address
Po Box 18679
Hattiesburg, MS 394048679

Credentials & registration

NPPES · NUCC
NPI registered
July 2022 — 4 yrs on file
Profile last updated
May 22, 2023
Specialty taxonomy
363LP0808X — NUCC code
State license (1)
Mississippi #905371

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1578296489. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$286
Transactions
15
Manufacturers
3
Payer (manufacturer) Industry Txns Amount
Abbvie INC. 10 $199.39
Iti, INC. (D/B/A Intra-Cellular Therapies, INC.) 2 $47.67
Corium, LLC 3 $38.60

By nature of payment

Food and Beverage
$286

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
488
Patients
94
Total drug cost
$9,004
Drug Type Claims Patients Total cost
Quetiapine Fumarate Generic 59 20 $1,347
Benztropine Mesylate Generic 47 16 $406
Trazodone Hcl Generic 43 17 $564
Hydroxyzine Pamoate Generic 40 15 $1,021
Sertraline Hcl Generic 40 13 $344
Mirtazapine Generic 34 13 $470
Lamotrigine Generic 30 0 $298
Buspirone Hcl Generic 29 0 $353
Olanzapine Generic 29 0 $1,156
Risperidone Generic 28 0 $332

Frequently asked questions

Auto-generated from federal data
What is Dr. Demetrius Williams's medical specialty?
Dr. Demetrius Williams practices Psychiatric/Mental Health Nurse Practitioner in Mandeville, LA.
Where does Dr. Demetrius Williams practice?
Dr. Demetrius Williams practices at 1150 W Causeway Approach, Mandeville, LA 704713038. Office phone: 8665306111.
What is Dr. Demetrius Williams's NPI?
Dr. Demetrius Williams's National Provider Identifier (NPI) is 1578296489, issued by NPPES.