Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Daniel Seamus Peiffer, MD, PHD

Individual provider Medical Oncology Physician · NPI 1912588328

Daniel Seamus Peiffer, MD, PHD is a Medical Oncology Physician in Chicago, Illinois. Licensed in Illinois. Registered with an NPI since 2021.

Licensed in
IL
In the registry since
2021
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

5841 S Maryland Ave Ste MC7082
Chicago, IL 60637-1465
Phone: (773) 702-6840
Fax: (773) 834-3950
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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 036178820 (IL)

Record details

NPI number1912588328
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , PHD
Sole proprietorNo
NPI enumeratedApril 16, 2021
Last updated in NPPESJuly 22, 2026
Certification dateJuly 22, 2026

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