NPI registry status
Active
2026 NPPES data Hematology & Oncology Physician NPI 1144647355 MD
Verify on CMS → Mary Malecek, MD
Hematology & Oncology Physician in Saint Louis, Missouri.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 11,215 in Hematology & Oncology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
2K
Medicare Part D claims · 221 beneficiaries · Hematology & Oncology Physician avg: 847
MIPS score
82.1/100
▼ 1 pts below national avg 83.1 · Above neutral
Industry payments
$249.7
8 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Mary Malecek, MD reported a CMS MIPS final score of 82.1/100 - below the 83.1 national average - and filed 1,564 Medicare Part D claims in 2023.
- 82.1/100
- MIPS score · -1 vs avg
- 2K
- Part D claims, 2023
- Likely
- board-certified (heuristic)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Mary Malecek, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
82 39th percentile higher than 39% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Mary Malecek, MD sits
This provider among hematology & oncology physician peers
Across the 4,233 hematology & oncology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Mary Malecek, MD writes more Part D claims than 82% of them and scores higher on MIPS quality than 38% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one hematology & oncology physician peer from a representative sample of 60; the gold marker is Mary Malecek, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Mary Malecek, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Mary Malecek, MD?
Near national averagePrimary specialty
Hematology & Oncology Physician
Medicare Part D claims
1,564 85% vs specialty avg
MIPS final score
82.1/100 1 pts vs avg
Specialty distribution in Missouri
How Hematology & Oncology Physician compares to other specialties among Missouri providers
Medicare quality performance, MIPS
Mary Malecek, MD's 2023 MIPS final score plotted against the Hematology & Oncology Physician national average
- MIPS Final Score
- 82.1/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Hematology & Oncology Physician) - 82.1/100 vs national avg 83.1
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Mary Malecek, MD appears in the CMS NPPES registry as a Hematology & Oncology Physician provider holding MD credentials at 3015 N BALLAS RD, Saint Louis, MO, 63131, with a listed phone of (314) 996-5151. NPI 1144647355 was issued on 03/25/2014.
Medicare Part D records for calendar year 2023 show 1,564 prescription claims written by this provider, covering 221 Medicare beneficiaries and totaling roughly $5.0 million in drug spend, with an opioid prescribing rate of 7.2%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 82.1/100 for the 2023 performance year (Quality 82.1, Cost 74.2), compared with the national average of 83.1.
Hematology & Oncology Physician is a mid-sized specialty nationwide, with 11,215 enrolled providers across 54 states and an average of 847 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1144647355 |
|---|---|
| Specialty | Hematology & Oncology Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 03/25/2014 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
82.1095
Final Score
Avg: 83.1
82.147
Quality
74.2341
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Mary Malecek, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Missouri Baptist Physician Services LLC
Saint Louis, MO
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Mary Malecek, MD. Source: openpaymentsdata.cms.gov.
Total received
$250
Largest payer
Incyte Corporation
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
1,564
Total Claims
$5.0M
Total Drug Cost
221
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,080
- Total Day Supply
- 53,754
- Generic Drug Cost
- $532K
- Opioid Claims
- 113 (7.2% rate)
- Antibiotic Claims
- 52
Patient Demographics
- Average Patient Age
- 75.1 years
- Avg HCC Risk Score
- 1.97
- Gender Split
- 56% female / 44% male
- Age Distribution
- <65: 15, 65-74: 92, 75-84: 80, 85+: 34
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Mary Malecek, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Acyclovir
Acyclovir
147 claims
- Hydroxyurea
Hydroxyurea
96 claims
- Anastrozole
Anastrozole
90 claims
- Prednisone
Prednisone
88 claims
- Dexamethasone
Dexamethasone
67 claims
- Prochlorperazine M… 58
Prochlorperazine Maleate
58 claims
- Xarelto 55
Xarelto
55 claims
- Eliquis 51
Eliquis
51 claims
| Drug | Claims |
|---|---|
| Acyclovir | 147 |
| Hydroxyurea | 96 |
| Anastrozole | 90 |
| Prednisone | 88 |
| Dexamethasone | 67 |
| Prochlorperazine Maleate | 58 |
| Xarelto Rivaroxaban | 55 |
| Eliquis Apixaban | 51 |
| Revlimid Lenalidomide | 39 |
| Ondansetron Hcl | 37 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Hematology & Oncology Physician Overview
How Mary Malecek, MD fits within the Hematology & Oncology Physician landscape nationally.
11,215
Hematology & Oncology Physician Providers in US
54
States with Hematology & Oncology Physician
847
Avg Claims per Provider
Mary Malecek, MD's 1,564 claims are above the specialty average of 847.
Nearby Hematology & Oncology Physician Providers in Missouri
Other clinicians with the same primary specialty enrolled in Missouri, drawn from the same CMS NPPES roster as Malecek.
Dr. Jamshed Agha
MD
Saint Charles, MO
Dr. Bader Alahmari
MBBS
St Louis, MO
Dr. Yaqoob Ali
M.D.
Rolla, MO
Dr. Ace Allen
M.D.
Kansas City, MO
Dr. Marci Allen
DO
Kansas City, MO
Compare Hematology & Oncology Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Missouri medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Hematology & Oncology Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Mary Malecek, MD's specialty? ▼
Mary Malecek, MD specializes in Hematology & Oncology Physician and practices in Saint Louis, Missouri. Credentials: MD.
How much does Mary Malecek, MD prescribe under Medicare Part D? ▼
In 2023, Mary Malecek, MD wrote 1,564 Medicare Part D claims totaling $5.0M in drug costs for 221 beneficiaries.
What is Mary Malecek, MD's Medicare quality score? ▼
Mary Malecek, MD has a CMS MIPS Final Score of 82.1/100 (Quality: 82.1, Cost: 74.2). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Mary Malecek, MD located? ▼
Mary Malecek, MD is located at 3015 N BALLAS RD, Saint Louis, MO, 63131. Phone: (314) 996-5151.
What is Mary Malecek, MD's NPI number? ▼
Mary Malecek, MD's National Provider Identifier (NPI) is 1144647355, issued on 03/25/2014.
Does Mary Malecek, MD prescribe opioids? ▼
Yes, Mary Malecek, MD had 113 opioid claims in 2023 with an opioid prescribing rate of 7.2%.
How many Hematology & Oncology Physician providers are there in the US? ▼
There are 11,215 Hematology & Oncology Physician providers across 54 states in the US. The average Hematology & Oncology Physician provider writes 847 Medicare Part D claims per year.
What drugs does Mary Malecek, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Mary Malecek, MD's most frequently prescribed drugs include Acyclovir, Hydroxyurea, Anastrozole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mary Malecek, MD accept Medicare? ▼
Mary Malecek, MD appears in CMS Medicare data with 1,564 Part D claims and 221 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mary Malecek, MD's credentials? ▼
Mary Malecek, MD's NPI is 1144647355 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Compiled from official public sources by the PlainDoctor editorial team.