Doctor profile · Federal record

Dr. Brenna Zack, ACNP

Nurse Practitioner · Gerontology Nurse Practitioner · Saint Louis, MO

  • NPI 1699307231
  • Accepts Medicare
  • MIPS 79.3 / 100 · 2023
  • 7 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1 Barnes Jewish Hospital Plz, Div Im Hospitalist
Saint Louis, MO 631101003
(314) 362-1700
fax (314) 362-9878
Mailing address
Po Box 7412011
Chicago, IL 606742011

Credentials & registration

NPPES · NUCC
NPI registered
February 2020 — 6 yrs on file
Profile last updated
April 17, 2025
Year of graduation
2019 — 7 yrs since
Specialty taxonomy
363L00000X — NUCC code
State license (1)
Missouri #2020005013
Medicaid
MO #420081763

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1699307231. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
193
Distinct HCPCS
3
Medicare allowed
$15,960
HCPCS Description Services Patients Avg allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 95 44 $67
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 64 37 $99
99239 Hospital discharge day management, more than 30 minutes 34 34 $96

In context: peer comparison

Among 112 peers in Saint Louis Nurse Practitioner, average services per provider: 76. This provider delivers 2.5× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
11
Patients
0
Total drug cost
$92
Drug Type Claims Patients Total cost
Pantoprazole Sodium Generic 11 0 $92

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Brenna Zack's medical specialty?
Dr. Brenna Zack practices Nurse Practitioner in Saint Louis, MO.
Where does Dr. Brenna Zack practice?
Dr. Brenna Zack practices at 1 Barnes Jewish Hospital Plz, Saint Louis, MO 631101003. Office phone: 3143621700.
What is Dr. Brenna Zack's NPI?
Dr. Brenna Zack's National Provider Identifier (NPI) is 1699307231, issued by NPPES.
Does Dr. Brenna Zack accept Medicare assignment?
Yes. Dr. Brenna Zack accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Brenna Zack commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Hospital discharge day management (HCPCS 99239). Source: CMS Medicare Physician & Other Practitioners file.