Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William Marcus Eckerd, M.D.

Psychiatry Physician in Norwalk, CT · enumerated 2006.

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

National Provider Identifier

1780740365

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Registry record

Entity type Individual (Type 1)

Name Dr. William Marcus Eckerd

Credential M.D.

Sex Male

Practice address 24 Stevens St, Norwalk, CT, 06850

Phone (203) 852-2293

Fax (203) 855-3985

Enumeration date Dec 28, 2006

Last updated in NPPES Mar 7, 2023

Taxonomy & licenses

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 022823 (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
13214	Other	CT	CONTROLLED SUBSTANCE

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

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 William Eckerd?

William Eckerd is registered in NPPES with the primary taxonomy of Psychiatry Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

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James Babashak Anesthesiology Physician · Norwalk, CT NPI 1932102803 Tammy Mahroos Certified Registered Nurse Anesthetist · Norwalk, CT NPI 1235132093 Garrett Nguyen Anesthesiology Physician · Norwalk, CT NPI 1740283621 Carolyn Mastroni Certified Registered Nurse Anesthetist · Norwalk, CT NPI 1316940166 Linda Versea Adult Health Nurse Practitioner · Norwalk, CT NPI 1861495681 Janet Segen Certified Registered Nurse Anesthetist · Norwalk, CT NPI 1083617831 Eve Zacharakos Certified Registered Nurse Anesthetist · Norwalk, CT NPI 1144223991 Lucia Vigna Anesthesiology Physician · Norwalk, CT NPI 1104829076

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-07.