Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Stephen R Rubenstein, M.D.

Internal Medicine Physician in Watertown, CT · enumerated 2006.

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

National Provider Identifier

1407960990

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Registry record

Entity type Individual (Type 1)

Name Stephen R Rubenstein

Credential M.D.

Sex Male

Practice address 70 Heminway Park Rd, Watertown, CT, 06795

Phone (860) 945-3350

Fax (860) 945-3251

Enumeration date Aug 19, 2006

Last updated in NPPES Oct 28, 2021

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 15816 (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
0100927	Other	-	AETNA
76345	Other	CT	AMERICHOICE
127709	Other	CT	WELLCARE
110170614	Other	CT	RAILROAD MEDICARE
1143356	Other	CT	USA
756284	Other	CT	CONNECTICARE
010015816CT01	Other	CT	ANTHEM
0R3234	Other	CT	HEALTHNET
4112895	Other	CT	AETNA
P4203159	Other	CT	OXFORD
004230075	Medicaid	CT	-
P00964312	Other	CT	RR MEDICARE
3V5929	Other	CT	HEALTHNET/COMMERCIAL

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 Stephen Rubenstein?

The National Provider Identifier (NPI) for Stephen Rubenstein is 1407960990, a Type 1 (individual) record in the CMS NPPES registry.

Where does Stephen Rubenstein practice?

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

Other providers at this practice address

Browse all →

Deanna Michaud Medical Physician Assistant · Watertown, CT NPI 1407826522 Sallie Carrington Internal Medicine Physician · Watertown, CT NPI 1639275936 Elisha Danzig Internal Medicine Physician · Watertown, CT NPI 1396360509 Shaina St Pierre Family Nurse Practitioner · Watertown, CT NPI 1619791084

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-10-28.