Doctor profile · Federal record

Dr. Andrew Zack, AA

Anesthesiologist Assistant (CMS: Anesthesiology Assistant) · Saint Louis, MO

  • NPI 1427793355
  • Accepts Medicare
  • 4 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
615 S New Ballas RD
Saint Louis, MO 631418221
(636) 386-9224
fax (636) 386-7679
Mailing address
339 Consort Dr
Ballwin, MO 630114439

Credentials & registration

NPPES · NUCC
NPI registered
May 2022 — 4 yrs on file
Year of graduation
2022 — 4 yrs since
Specialty taxonomy
367H00000X — NUCC code
State license (1)
Missouri #PENDING

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1427793355. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
38
Distinct HCPCS
2
Medicare allowed
$2,507
HCPCS Description Services Patients Avg allowed
00811 Anesthesia for other procedure on large bowel using an endoscope 23 23 $67
00731 Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope 15 15 $65

In context: peer comparison

Among 33 peers in Saint Louis Anesthesiologist Assistant, average services per provider: 17. This provider delivers 2.2× the peer median.

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Andrew Zack's medical specialty?
Dr. Andrew Zack practices Anesthesiologist Assistant in Saint Louis, MO.
Where does Dr. Andrew Zack practice?
Dr. Andrew Zack practices at 615 S New Ballas RD, Saint Louis, MO 631418221. Office phone: 6363869224.
What is Dr. Andrew Zack's NPI?
Dr. Andrew Zack's National Provider Identifier (NPI) is 1427793355, issued by NPPES.
Does Dr. Andrew Zack accept Medicare assignment?
Yes. Dr. Andrew Zack accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Andrew Zack commonly perform?
Top Medicare-reported procedures in 2023: Anesthesia for other procedure on large bowel using an endoscope (HCPCS 00811); Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (HCPCS 00731). Source: CMS Medicare Physician & Other Practitioners file.