Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Connecticut Oncology&Hematology, LLP

Clinical Medical Laboratory in Torrington, CT · enumerated 2006 · authorized official Ivan Lowenthal, General Partner.

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

National Provider Identifier

1992737449

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Registry record

Entity type Organization (Type 2)

Legal business name Connecticut Oncology&Hematology, LLP

Practice address 200 Kennedy Dr, Torrington, CT, 06790

Phone (860) 482-5384

Fax (860) 496-4951

Enumeration date Jul 7, 2006

Last updated in NPPES Jun 21, 2018

Taxonomy & classification

364SX0200X Oncology Clinical Nurse Specialist Physician Assistants & Advanced Practice Nursing Providers Secondary

207RX0202X Medical Oncology Physician Allopathic & Osteopathic Physicians Secondary

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians Secondary

207U00000X Nuclear Medicine Physician Allopathic & Osteopathic Physicians Secondary

363LG0600X Gerontology Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 003622 (CT) Secondary

291U00000X Clinical Medical Laboratory Laboratories Primary

Authorized official

Name Ivan Lowenthal

Title General Partner

Phone (860) 482-5384

Other identifiers

Identifier	Type	State	Issuer
004049763	Medicaid	CT	-
008002184	Medicaid	CT	-
CD0030	Other	-	PALMETTO GBA-RR RETIREMENT

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 current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2018-06-21. Verify at npiregistry.cms.hhs.gov.

Where is Connecticut Oncology&Hematology, LLP located?

The practice location on file with NPPES is in Torrington, CT.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-06-21.