NPI Portal NPI Lookup & Verification

Stuart Marcus, M.D.

Stuart Marcus is a Surgical Oncology Physician provider (Surgery) practicing in Bridgeport, CT, registered in the NPPES registry with NPI 1780678227 since 2005. The credential MD stands for Doctor of Medicine.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI 1780678227
Entity type Individual (Type 1)
Name Stuart Marcus
Credential M.D.
Sex Male
Practice address Bridgeport, CT, 06606
Phone 2035766101
Fax 2035816587
Enumeration date 2005-09-09
Last updated in NPPES 2015-07-31

Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

Taxonomy code Specialty Primary License State
208600000X Surgery Physician Secondary 175417 NY
2086X0206X Surgical Oncology Physician Primary 044473 CT

MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
01620075 Medicaid NY
Copy-ready billing details
Provider: Stuart Marcus, M.D.
NPI: 1780678227
Taxonomy: 2086X0206X (Surgical Oncology Physician)
Address: Bridgeport, CT, 06606

Other providers at this practice address

NPI Name Type Specialty Location
1093700619 Tatiana Zinchuk Individual Pediatrics Physician Bridgeport, CT
1861473498 Neil Specht Individual Diagnostic Radiology Physician Bridgeport, CT
1063493682 Shashi Chaddha Individual Diagnostic Radiology Physician Bridgeport, CT
1639150261 Guy Torstenson Individual Diagnostic Radiology Physician Bridgeport, CT
1528041845 Wolf Vogel Individual Anesthesiology Physician Bridgeport, CT
1437132750 Charles Thompson Individual Anesthesiology Physician Bridgeport, CT
1699758938 Lansheng Wang Individual Anesthesiology Physician Bridgeport, CT
1952384281 Robert Suriani Individual Anesthesiology Physician Bridgeport, CT

Verify this record

Cross-check NPI 1780678227 against the authoritative CMS record: view Stuart Marcus on the official NPPES registry .

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. Read the full guide or validate an NPI number.

Frequently asked questions

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.
What specialty is Stuart Marcus?
Stuart Marcus is registered in NPPES with the primary taxonomy of Surgical Oncology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2015-07-31.