Doctor profile · Federal record

Dr. Mary Malecek, MD

Hematology & Oncology Physician (CMS: Hematology/Oncology) · Saint Louis, MO

  • NPI 1144647355
  • Accepts Medicare
  • MIPS 79.4 / 100 · 2023
  • 12 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
3015 N Ballas RD
Saint Louis, MO 631312329
(314) 996-5151
Mailing address
660 S Euclid Ave
Saint Louis, MO 631101010

Credentials & registration

NPPES · NUCC
NPI registered
March 2014 — 12 yrs on file
Profile last updated
October 29, 2021
Year of graduation
2014 — 12 yrs since
Specialty taxonomy
207RH0003X — NUCC code
State license (1)
Missouri #2017010068

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1144647355. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
1,113
Distinct HCPCS
9
Medicare allowed
$107,904
HCPCS Description Services Patients Avg allowed
99214 Established patient office or other outpatient visit, 30-39 minutes 584 270 $95
99215 Established patient office or other outpatient visit, 40-54 minutes 153 52 $137
99231 Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 102 46 $49
99213 Established patient office or other outpatient visit, 20-29 minutes 93 84 $64
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 53 31 $78
99204 New patient office or other outpatient visit, 45-59 minutes 49 49 $131
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 47 43 $129
99221 Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 20 19 $82
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 12 12 $172

In context: peer comparison

Among 12 peers in this city , average services per provider: 216. This provider delivers 5.2× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$250
Transactions
8
Manufacturers
7
Payer (manufacturer) Industry Txns Amount
Incyte Corporation 1 $99.00
Bayer Healthcare Pharmaceuticals Inc. 2 $39.31
Novartis Pharmaceuticals Corporation 1 $26.04
SOBI, INC 1 $23.03
AstraZeneca Pharmaceuticals LP 1 $21.10
GlaxoSmithKline, LLC. 1 $20.72
Celgene Corporation 1 $20.50

By nature of payment

Food and Beverage
$151
Education
$99

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
896
Patients
229
Total drug cost
$2,624,224
Drug Type Claims Patients Total cost
Acyclovir Generic 147 42 $4,018
Hydroxyurea Generic 96 23 $4,414
Anastrozole Generic 90 21 $2,792
Prednisone Generic 88 28 $359
Dexamethasone Generic 67 20 $1,009
Prochlorperazine Maleate Generic 58 43 $2,773
Xarelto (Rivaroxaban) Brand 55 0 $39,217
Eliquis (Apixaban) Brand 51 13 $47,841
Revlimid (Lenalidomide) Brand 39 11 $798,785
Ondansetron Hcl Generic 37 28 $274

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Mary Malecek's medical specialty?
Dr. Mary Malecek practices Hematology & Oncology Physician in Saint Louis, MO.
Where does Dr. Mary Malecek practice?
Dr. Mary Malecek practices at 3015 N Ballas RD, Saint Louis, MO 631312329. Office phone: 3149965151.
What is Dr. Mary Malecek's NPI?
Dr. Mary Malecek's National Provider Identifier (NPI) is 1144647355, issued by NPPES.
Does Dr. Mary Malecek accept Medicare assignment?
Yes. Dr. Mary Malecek accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mary Malecek commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99215); Subsequent hospital care with straightforward or low level of medical decision making (HCPCS 99231). Source: CMS Medicare Physician & Other Practitioners file.