Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum Organization subpart

Mill Hill Medical Consultants Inc

Hospitalist Physician in Greenwich, CT · enumerated 2006 · authorized official Bruce Mcdonald, President.

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

National Provider Identifier

1881607232

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Registry record

Entity type Organization (Type 2)

Legal business name Mill Hill Medical Consultants Inc

Parent organization Greenwich Im Hospitalist Services

Practice address 5 Perryridge Rd, Greenwich, CT, 06830

Phone (203) 863-3685

Fax (203) 863-4738

Enumeration date Aug 15, 2006

Last updated in NPPES May 19, 2010

Taxonomy & classification

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Bruce Mcdonald

Title President

Phone (203) 384-3717

Other identifiers

Identifier	Type	State	Issuer
C03312	Other	CT	MEDICARE GROUP NUMBER

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 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.

What type of organization is Mill Hill Medical Consultants Inc?

Mill Hill Medical Consultants Inc is registered in NPPES as a Hospitalist Physician (its primary provider taxonomy).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-05-19.