Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Si-Hoi Lam, MD, LLC

Q: What type of organization is Si-Hoi Lam, MD, LLC?

Si-Hoi Lam, MD, LLC is registered in NPPES as a Internal Medicine Physician (its primary provider taxonomy).

Internal Medicine Physician in Branford, CT · enumerated 2007 · authorized official Si-Hoi Lam, Doctor.

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

National Provider Identifier

1255530325

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Registry record

Entity type Organization (Type 2)

Legal business name Si-Hoi Lam, MD, LLC

Practice address 173 Montowese St, Branford, CT, 06405

Phone (203) 483-6285

Fax (203) 483-6217

Enumeration date Jul 17, 2007

Last updated in NPPES Jul 30, 2013

Taxonomy & classification

173000000X Legal Medicine Other Service Providers Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Si-Hoi Lam

Title Doctor

Phone (203) 483-6285

Other identifiers

Identifier	Type	State	Issuer
001248004	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 Si-Hoi Lam, MD, LLC?

Si-Hoi Lam, MD, LLC 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-07-30.