Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Dr. Lee Ratner, MD

Individual provider Medical Oncology Physician · NPI 1952332462

Dr. Lee Ratner, MD practises Medical Oncology in Saint Louis, Missouri. Graduated from Yale University School of Medicine in 1979, 47 years ago. Practices with Washington University, a 2,986-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
47
Trained at
Yale University School of Medicine
Licensed in
MO
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

4921 Parkview Pl Div Im Medical Oncology Ste 7A 7B 7C
Saint Louis, MO 63110-1032
Phone: (800) 647-2098
Fax: (314) 362-3192
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Medical Oncology Physician (primary) Taxonomy 207RX0202X · Licence R3B13 (MO)

Record details

NPI number1952332462
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 5, 2006
Last updated in NPPESApril 17, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyMEDICAL ONCOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolYALE UNIVERSITY SCHOOL OF MEDICINE
Graduated 1979 (47 years in practice)
Group practice Washington University — 2986 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients40
Services billed 143 a service is one billed item, such as a visit, a test or a procedure
Average patient age70

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Washington University

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2986 clinicians in the practice; 12 are shown here.

Other providers in Saint Louis