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Ian M. Rubins, MD, PC

Specialist in Greenwich, CT · enumerated 2007 · authorized official Roberta Donis, Billing Administrator.

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

National Provider Identifier

1689854192

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Registry record

Entity type Organization (Type 2)
Legal business name Ian M. Rubins, MD, PC
Practice address 4 Dearfield Dr, Suite 106, Greenwich, CT, 06831
Phone (203) 618-0687
Fax (203) 869-0019
Enumeration date Nov 13, 2007
Last updated in NPPES Nov 13, 2007

Taxonomy & classification

174400000X Specialist Other Service Providers · License 033766 (CT) Primary

Authorized official

Name Roberta Donis
Title Billing Administrator
Phone (203) 618-0687

Other identifiers

Identifier Type State Issuer
05676572 Other CT AETNA
1336207968 Other CT INDIVIDUAL PROVIDER NPI
P967462 Other CT OXFORD
010033766CT03 Other CT ANTHEM BCBS
CU1896 Other CT ACS HEALTHNET

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

What is the NPI number for Ian M. Rubins, MD, PC?
The NPI for Ian M. Rubins, MD, PC is 1689854192, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Ian M. Rubins, MD, PC?
NPPES lists Roberta Donis (Billing Administrator) as the authorized official for this organization.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-11-13.