Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ms. Rachel Joan Tanowitz, R.D. M.S. C.D.N.

Registered Dietitian in Greenwich, CT · enumerated 2006.

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

National Provider Identifier

1134145162

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Registry record

Entity type Individual (Type 1)

Name Ms. Rachel Joan Tanowitz

Credential R.D. M.S. C.D.N.

Sex Female

Practice address Greenwich, CT, 06830

Phone (203) 532-1294

Enumeration date Jul 14, 2006

Last updated in NPPES Jul 8, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 000390 (CT) Primary

Other identifiers

Identifier	Type	State	Issuer
P817515	Other	CT	OXFORD INSURANCE
2604961	Other	CT	AETNA INSURANCE
270000390CT01	Other	CT	ANTHEM BLUECROSS/BLUESHIE

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 Rachel Tanowitz?

The National Provider Identifier (NPI) for Rachel Tanowitz is 1134145162, a Type 1 (individual) record in the CMS NPPES registry.

Where does Rachel Tanowitz practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.