Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Athanasius A Anagnostou, M.D.

Hematology & Oncology Physician in Worcester, MA · enumerated 2005.

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

National Provider Identifier

1174505648

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Registry record

Entity type Individual (Type 1)

Name Athanasius A Anagnostou

Credential M.D.

Sex Male

Practice address 55 Lake Ave N, Department of Hematology/Oncology, Worcester, MA, 01655

Phone (508) 334-5141

Enumeration date Nov 18, 2005

Last updated in NPPES Apr 1, 2009

Taxonomy & licenses

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 212900 (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
0164160	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

What is the NPI number for Athanasius Anagnostou?

The National Provider Identifier (NPI) for Athanasius Anagnostou is 1174505648, a Type 1 (individual) record in the CMS NPPES registry.

Where does Athanasius Anagnostou practice?

The practice location on file with NPPES is in Worcester, MA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

James Liebmann Medical Oncology Physician · Worcester, MA NPI 1477556587 Daniel Han Radiation Oncology Physician · Worcester, MA NPI 1831192301 Frances Lagana Podiatrist · Worcester, MA NPI 1750385514 Seth Arum Endocrinology, Diabetes & Metabolism Physician · Worcester, MA NPI 1679578793 Yong Zhao Blood Banking & Transfusion Medicine Physician · Worcester, MA NPI 1366448813 Donna Russell Certified Registered Nurse Anesthetist · Worcester, MA NPI 1689672347 Bruce Simon Surgical Critical Care Physician · Worcester, MA NPI 1164420634 Richard Haas Endocrinology, Diabetes & Metabolism Physician · Worcester, MA NPI 1023017373

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-04-01.