Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Martin E. Katz, MD

Medical Oncology Physician in Hamden, CT · enumerated 2006.

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

National Provider Identifier

1134160146

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Registry record

Entity type Individual (Type 1)

Name Martin E. Katz

Credential MD

Sex Male

Practice address 2080 Whitney Avenue, Suite 240, Medical Oncology & Hematology, PC, Hamden, CT, 06518

Phone (203) 407-8002

Fax (203) 407-8038

Enumeration date Jun 9, 2006

Last updated in NPPES Jan 29, 2013

Taxonomy & licenses

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 018670 (CT) Secondary

207RX0202X Medical Oncology Physician Allopathic & Osteopathic Physicians · License 018670 (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
001186909	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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Martin Katz?

Martin Katz is registered in NPPES with the primary taxonomy of Medical Oncology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-01-29.