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Michael Marks, M.D.

Orthopaedic Surgery Physician in Norwalk, CT · enumerated 2005.

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

National Provider Identifier

1720087430

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Registry record

Entity type Individual (Type 1)
Name Michael Marks
Credential M.D.
Sex Male
Practice address 24 Stevens St, Norwalk, CT, 06850
Phone (203) 852-2000
Enumeration date Jul 15, 2005
Last updated in NPPES Nov 17, 2016

Taxonomy & licenses

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 028933 (CT) Primary
207XS0114X Adult Reconstructive Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 028933 (CT) Secondary
207XS0117X Orthopaedic Surgery of the Spine Physician Allopathic & Osteopathic Physicians · License 028933 (CT) Secondary
207XX0005X Sports Medicine (Orthopaedic Surgery) Physician Allopathic & Osteopathic Physicians · License 028933 (CT) 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.

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Frequently asked questions

How do I verify Michael Marks's NPI record?
Cross-check NPI 1720087430 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1720087430 active?
Yes, as of the latest NPPES snapshot, NPI 1720087430 is active (record last updated 2016-11-17).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-11-17.