Antineoplastic Combined Chemotherapy ProtocolsBridged Bicyclo Compounds, HeterocyclicDecitabine
Dr. Timothy J. Ley, MD
NPI1447278874
- Part D claims, 2024
- 13
- Publications
- 103
- Clinical trials
- 3
- Hospital affiliations
- 1
- Industry payments
- $31
- Practice address
- One Barnes-Jewish Hospital Plaza, Saint Louis, MO 63110
- Practice phone
- Call (314) 747-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Ley's professional email, personal email and mobile number
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Dr. Timothy J. Ley is a medical oncologist in Saint Louis, Missouri
Dr. Ley practices at Barnes-Jewish Hospital in Saint Louis, Missouri, part of BJC Health.
Dr. Ley's NPI, 1447278874, was assigned on July 17, 2006. Dr. Ley holds Missouri license R6F87.
NPI and contact details
- NPI
- 1447278874NPI Registry (opens in a new tab)
- NPI enumeration date
- July 17, 2006
- NPI status
- Active
- Practice phone
- (314) 747-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Timothy J. Ley practices at 2 locations in Saint Louis, Missouri
Dr. Ley's primary practice is Barnes-Jewish Hospital, at One Barnes-Jewish Hospital Plaza, Saint Louis, MO 63110 in St. Louis City. The practice phone is (314) 747-3000. Dr. Ley also practices at Barnes-Jewish Hospital, 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110.
- Barnes-Jewish HospitalPrimaryOne Barnes-Jewish Hospital Plaza, Saint Louis, MO 63110 · St. Louis CityPhone(314) 747-3000
- Barnes-Jewish Hospital1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110 · Saint Louis CityPhone(314) 747-3000
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Timothy J. Ley is affiliated with 1 site of care and 1 medical group
Dr. Ley's primary practice is Barnes-Jewish Hospital in Saint Louis, Missouri, part of BJC Health. The medical group on file is WashU Medicine Psychiatry.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Timothy J. Ley's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ley practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Barnes-Jewish Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Timothy J. Ley is one of 120 medical oncologists in Missouri
Medical oncology is Dr. Ley's primary specialty in the NPI Registry, under taxonomy code 207RX0202X. Dr. Ley is licensed in Missouri.
Specialties and state licenses
- Medical oncology, MissouriPrimary
Medical oncologists near Dr. Ley
Counts of medical oncologists with a Dmand AI profile, by place and practice. Each opens the list.
120medical oncologists in Missouri86medical oncologists in Saint Louis74medical oncologists at Barnes-Jewish Hospital
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Timothy J. Ley's patients have a median age of 57
Across all payers, Dmand AI patient panel data puts Dr. Ley's median patient age at 57, with 100% women.
Dr. Ley's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 57
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Timothy J. Ley wrote 13 Medicare Part D claims in 2024
In 2024, Dr. Ley wrote 13 Medicare Part D claims. 100% of them were for generic drugs. They cover 1 drug, with $7,720 in total drug cost. In 2023, CMS named 13 claims across 1 drug.
Part D claims, 202413
Drugs named by CMS1
Total drug cost$7,720
Dr. Ley's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 132024: 13No change
Drugs named by CMS: 1 in 2024, 1 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Timothy J. Ley has 103 publications on record
Dmand AI links 103 papers to Dr. Ley, published from 2010 to 2024. 2021 was the busiest year, with 10. The most frequent topics are Leukemia, Myeloid, Acute, Myelodysplastic Syndromes and Oncogene Proteins, Fusion. Dr. Ley has published most often in Blood. Dr. Ley's most frequent co-authors are Daniel C. Link, MD, John F. Dipersio, MD and Peter Westervelt, MD.
Papers103
Years published2010 to 2024
Dr. Ley's papers by year, 2015 to 2024
Topics Dr. Ley writes about most
- Leukemia, Myeloid, Acute
- Myelodysplastic Syndromes
- Oncogene Proteins, Fusion
- DNA (Cytosine-5-)-Methyltransferases
- DNA Methylation
- DNA Methyltransferase 3A
- Gene Expression Profiling
- Hematopoietic Stem Cells
Dr. Ley's most frequent co-authors
- Daniel C. Link, MD42 shared papers
- John F. Dipersio, MD37 shared papers
- Peter Westervelt, MD15 shared papers
Recent publications by Dr. Ley
Proc Natl Acad Sci U S A
Binding SitesCell Self RenewalChromatin
DNADNA (Cytosine-5-)-MethyltransferasesDNA Methylation
Mol Cell Proteomics
EndopeptidasesLeukemia, Myeloid, AcutePeptides
Core Binding Factor Alpha 2 SubunitCore Binding Factor beta SubunitLeukemia, Myeloid, Acute
See who Dr. Ley researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Ley works with, so you can find a warm path to the right medical oncologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Timothy J. Ley has worked on 3 clinical trials
Dmand AI links Dr. Ley to 3 clinical trials, 3 of them phase 2 studies. 1 is still active or recruiting. Conditions studied include Leukemia, Myeloid, Acute, Myelodysplastic Syndromes and Purpura, Thrombotic Thrombocytopenic. Washington University School of Medicine sponsors the most, 3.
Conditions in Dr. Ley's trials
- Leukemia, Myeloid, Acute
- Myelodysplastic Syndromes
- Purpura, Thrombotic Thrombocytopenic
- Leukemia, Myeloid
- Thrombophilia
Investigators on the most trials with Dr. Ley
- Ana Gabriela Antun, MD1 shared trial
- Gowthami M. Arepally, MD1 shared trial
- Kenneth A. Bauer, MD1 shared trial
Recent clinical trials with Dr. Ley
Improving Risk Assessment of AML With a Precision Genomic Strategy to Assess Mutation Clearance (opens in a new tab)
Active, not recruitingPhase 2
Leukemia, Myeloid, AcuteLeukemia, MyeloidCytarabineClinSeq
Adjuvant Low Dose Rituximab for Acquired TTP With Severe ADAMTS13 Deficiency (opens in a new tab)
CompletedPhase 2
Purpura, Thrombotic ThrombocytopenicThrombophiliaRituximab
Myelodysplastic SyndromesLeukemia, Myeloid, AcuteDecitabine
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Timothy J. Ley received $31 in industry payments in 2019
CMS Open Payments shows 1 general payment to Dr. Ley from 1 drug or device company in 2019. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $31.
Companies that paid Dr. Ley the most, 2019 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Timothy J. Ley's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Timothy J. Ley
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Timothy J. Ley's NPI number?
Dr. Timothy J. Ley's NPI number is 1447278874. It was assigned on July 17, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Timothy J. Ley?
Dr. Timothy J. Ley is a medical oncologist in Saint Louis, Missouri. The primary specialty in the NPI Registry is Medical Oncology Physician (taxonomy code 207RX0202X).
Where does Dr. Timothy J. Ley practice?
Dr. Ley practices at One Barnes-Jewish Hospital Plaza, Saint Louis, MO 63110. Dr. Ley also practices at 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110. Dr. Ley's primary practice is Barnes-Jewish Hospital in Saint Louis, Missouri, part of BJC Health.
What is Dr. Timothy J. Ley's office phone number?
The practice phone on file for Dr. Ley is (314) 747-3000.
What is Dr. Timothy J. Ley's medical license number?
Dr. Ley holds Missouri license R6F87.
Which hospitals is Dr. Timothy J. Ley affiliated with?
Dr. Ley practices at Barnes-Jewish Hospital in Saint Louis, Missouri.
What medical group is Dr. Timothy J. Ley part of?
Dr. Ley is linked to WashU Medicine Psychiatry.
What drugs does Dr. Timothy J. Ley prescribe most?
In 2024 Medicare Part D data, Dr. Ley's most prescribed drugs by claims were Deferasirox.
Has Dr. Timothy J. Ley received payments from drug or device companies?
CMS Open Payments shows $31 in general payments to Dr. Ley from 1 company from 2019 to 2019. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Timothy J. Ley been practicing?
Dr. Ley's NPI was assigned in 2006.
Does Dr. Timothy J. Ley do research?
Dmand AI links 103 publications to Dr. Ley, published from 2010 to 2024. Dr. Ley has worked on 3 clinical trials.
Who does Dr. Timothy J. Ley publish with?
Dr. Ley's most frequent co-authors are Daniel C. Link, MD (42 shared papers), John F. Dipersio, MD (37 shared papers) and Peter Westervelt, MD (15 shared papers).
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