Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Joseph Louis Sirois III, M.D.

Orthopaedic Surgery Physician in Norwood, MA · enumerated 2005.

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

National Provider Identifier

1841283942

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Registry record

Entity type Individual (Type 1)

Name Joseph Louis Sirois III

Credential M.D.

Sex Male

Practice address 825 Washington St, Suite 260, Norwood, MA, 02062

Phone (781) 769-6720

Fax (781) 769-0691

Enumeration date Aug 24, 2005

Last updated in NPPES Oct 8, 2014

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 59259 (MA) Secondary

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 59259 (MA) 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
24242	Other	MA	AETNA
0904937	Other	MA	UNITEDHEALTH CARE
3031551	Medicaid	MA	-
059259	Other	MA	TUFTS HEALTH PLAN
17387	Other	MA	HARVARD PILGRIM HEALTH CARE
B20909801	Other	MA	CIGNA HEALTHCARE

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 the NPI number for Joseph Sirois?

The National Provider Identifier (NPI) for Joseph Sirois is 1841283942, a Type 1 (individual) record in the CMS NPPES registry.

Where does Joseph Sirois practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-10-08.