Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Elizabeth Ann Marcus, MD
Surgery Physician in Chicago, IL · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1457464638
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Registry record
Entity type Individual (Type 1)
Name Dr. Elizabeth Ann Marcus
Credential MD
Sex Female
Practice address 1835 W Harrison St, Chicago, IL, 60612
Phone (312) 864-5376
Fax (312) 864-9608
Enumeration date Aug 15, 2006
Last updated in NPPES Apr 27, 2021
Taxonomy & licenses
2086X0206X Surgical Oncology Physician Allopathic & Osteopathic Physicians · License 036-093110 (IL) Secondary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What specialty is Elizabeth Marcus?
Elizabeth Marcus is registered in NPPES with the primary taxonomy of Surgery Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-04-27.