Doctor profile · Federal record

Dr. GEORGE ANSSTAS, MD

Medical Oncology Physician (CMS: MEDICAL ONCOLOGY) · Internal Medicine Physician · SAINT LOUIS, MO

  • NPI 1790988053
  • Accepts Medicare
  • MIPS 79.3 / 100 · 2023
  • 25 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
4921 PARKVIEW PL, DIV IM MEDICAL ONCOLOGY, STE 7A, 7B, 7C
SAINT LOUIS, MO 631101032
(800) 647-2098
fax (314) 362-3192
Mailing address
PO BOX 7412011
CHICAGO, IL 606742011

Credentials & registration

NPPES · NUCC
NPI registered
June 2007 — 19 yrs on file
Profile last updated
April 15, 2025
Year of graduation
2001 — 25 yrs since
Specialty taxonomy
207RX0202X — NUCC code
State license (1)
Missouri #2007026336
Medicaid
MO #207520909

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1790988053. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
24,412
Distinct HCPCS
10
Medicare allowed
$787,705
HCPCS Description Services Patients Avg allowed
J9299 Injection, nivolumab, 1 mg 8,240 12 $30
J9271 Injection, pembrolizumab, 1 mg 8,200 15 $54
J1453 Injection, fosaprepitant, 1 mg 4,050 16 $0
J1100 Injection, dexamethasone sodium phosphate, 1 mg 850 38 $0
J1626 Injection, granisetron hydrochloride, 100 mcg 450 20 $0
J0640 Injection, leucovorin calcium, per 50 mg 407 11 $4
J2469 Injection, palonosetron hcl, 25 mcg 370 21 $1
J9190 Injection, fluorouracil, 500 mg 350 15 $2
99214 Established patient office or other outpatient visit, 30-39 minutes 338 133 $126
36415 Insertion of needle into vein for collection of blood sample 265 91 $8

In context: peer comparison

Among 44 peers in this city , average services per provider: 919. This provider delivers 27× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$11,581
Transactions
11
Manufacturers
5
Payer (manufacturer) Industry Txns Amount
F. Hoffmann-La Roche AG 6 $11,205.61
E.R. Squibb & Sons, L.L.C. 2 $188.77
Immunocore Limited 1 $100.04
Tempus AI, Inc 1 $82.41
ARRAY BIOPHARMA INC 1 $3.80

By nature of payment

Travel and Lodging
$10,938
Food and Beverage
$643

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
462
Patients
85
Total drug cost
$25,843
Drug Type Claims Patients Total cost
Prednisone Generic 100 23 $524
Levothyroxine Sodium Generic 80 19 $887
Prochlorperazine Maleate Generic 58 43 $1,629
Hydrocortisone Generic 41 0 $731
Eliquis (Apixaban) Brand 31 0 $19,716
Hydroxyzine Hcl Generic 21 0 $409
Gabapentin Generic 20 0 $124
Levetiracetam Generic 16 0 $482
Morphine Sulfate Er (Morphine Sulfate) Brand 15 0 $207
Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen) Brand 15 0 $122

Hospital affiliations

CMS Hospital Compare