Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Bruce R. Baron, M.D., PC

Q: What type of organization is Bruce R. Baron, M.D., PC?

Bruce R. Baron, M.D., PC is registered in NPPES as a Internal Medicine Physician (its primary provider taxonomy).

Internal Medicine Physician in Stamford, CT · enumerated 2010 · authorized official Bruce Baron, Physician-Internal Medicine.

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

National Provider Identifier

1033440367

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Registry record

Entity type Organization (Type 2)

Legal business name Bruce R. Baron, M.D., PC

Practice address 583 High Ridge Rd., Stamford, CT, 06905

Phone (203) 329-8651

Fax (203) 968-2635

Enumeration date Jan 27, 2010

Last updated in NPPES Mar 15, 2010

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 13768 (CT) Primary

Authorized official

Name Bruce Baron

Title Physician-Internal Medicine

Phone (203) 329-8651

Other identifiers

Identifier	Type	State	Issuer
1137686	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 type of organization is Bruce R. Baron, M.D., PC?

Bruce R. Baron, M.D., PC is registered in NPPES as a Internal Medicine Physician (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-03-15.