Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Marcus P Cooper, M.D.

Internal Medicine Physician in Worcester, MA · enumerated 2006.

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

National Provider Identifier

1588622989

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Registry record

Entity type Individual (Type 1)

Name Marcus P Cooper

Credential M.D.

Sex Male

Practice address 55 Lake Avenue North, Worcester, MA, 01655

Phone (508) 856-3452

Enumeration date May 3, 2006

Last updated in NPPES Dec 2, 2010

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 226139 (MA) 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
2126788	Medicaid	MA	-

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 → Validate an NPI →

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 Marcus Cooper?

Marcus Cooper is registered in NPPES with the primary taxonomy of Internal Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Mercedes Menendez Psychiatry Physician · Worcester, MA NPI 1891779054 Banu Sundar Neurology Physician · Worceter, MA NPI 1518932524 Michelle Conroy Allergy & Immunology Physician · Worcester, MA NPI 1922026343 Neil Kluger Hematology & Oncology Physician · Worcester, MA NPI 1023114022 Emily Young Nurse Practitioner · Worcester, MA NPI 1457459224 Michelina Fraioli Clinical Social Worker · Worcester, MA NPI 1538260351 Fahad Ali Emergency Medicine Physician · Worcester, MA NPI 1982790713 Sarah Pope Diagnostic Radiology Physician · Worcester, MA NPI 1154401289

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-12-02.