Doctor profile · Federal record

Dr. Gillian Lettre, NP

Psychiatric/Mental Health Nurse Practitioner · Nurse Practitioner · Grafton, WI

  • NPI 1194471292
  • 4 yrs on file
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1225 12Th Ave
Grafton, WI 530241923
(833) 711-1930

Credentials & registration

NPPES · NUCC
NPI registered
February 2022 — 4 yrs on file
Profile last updated
December 18, 2024
Specialty taxonomy
363LP0808X — NUCC code
State license (1)
Wisconsin #11857

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1194471292. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
86
Distinct HCPCS
2
Medicare allowed
$11,572
HCPCS Description Services Patients Avg allowed
99215 Established patient office or other outpatient visit, 40-54 minutes 66 22 $132
90792 Psychiatric diagnostic evaluation with medical services 20 20 $143

In context: peer comparison

Among 2 peers in Grafton Psychiatric/Mental Health Nurse Practitioner, average services per provider: 62. This provider delivers 1.4× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
850
Patients
255
Total drug cost
$21,779
Drug Type Claims Patients Total cost
Sertraline Hcl Generic 87 15 $798
Duloxetine Hcl Generic 76 18 $1,987
Hydroxyzine Hcl Generic 69 25 $1,452
Alprazolam Generic 64 22 $386
Risperidone Generic 61 12 $762
Quetiapine Fumarate Generic 60 20 $1,105
Buspirone Hcl Generic 57 17 $1,256
Trazodone Hcl Generic 56 21 $1,237
Lamotrigine Generic 52 14 $584
Mirtazapine Generic 52 15 $1,581

Frequently asked questions

Auto-generated from federal data
What is Dr. Gillian Lettre's medical specialty?
Dr. Gillian Lettre practices Psychiatric/Mental Health Nurse Practitioner in Grafton, WI.
Where does Dr. Gillian Lettre practice?
Dr. Gillian Lettre practices at 1225 12Th Ave, Grafton, WI 530241923. Office phone: 8337111930.
What is Dr. Gillian Lettre's NPI?
Dr. Gillian Lettre's National Provider Identifier (NPI) is 1194471292, issued by NPPES.
What procedures does Dr. Gillian Lettre commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99215); Psychiatric diagnostic evaluation with medical services (HCPCS 90792). Source: CMS Medicare Physician & Other Practitioners file.