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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

James S Marsh, MD

Orthopaedic Surgery Physician in North Haven, CT · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1033178207

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Registry record

Entity type Individual (Type 1)
Name James S Marsh
Credential MD
Sex Male
Practice address North Haven, CT, 06473
Phone (203) 453-1088
Fax (203) 458-2980
Enumeration date Mar 17, 2006
Last updated in NPPES Jul 9, 2007

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

Taxonomy & licenses

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 028508 (CT) Primary
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
001285089 Medicaid CT -

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.

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Frequently asked questions

Where does James Marsh practice?
The practice location on file with NPPES is in North Haven, CT. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for James Marsh?
The National Provider Identifier (NPI) for James Marsh is 1033178207, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.