Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dorairayu Thavaseelan, MD

Anesthesiology Physician in Methuen, MA · enumerated 2005.

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

National Provider Identifier

1962402453

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Registry record

Entity type Individual (Type 1)

Name Dorairayu Thavaseelan

Credential MD

Sex Male

Practice address Caritas Holy Family Hospital, 70 East St., Methuen, MA, 01844

Phone (978) 687-0151

Enumeration date Jul 26, 2005

Last updated in NPPES Jul 13, 2026

Taxonomy & licenses

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License 44851 (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
0150665	Medicaid	MA	-
044851	Other	-	Tuft
050032822	Other	-	RR Medicare
30005578	Medicaid	NH	-
B26251	Other	-	Mass BCBS

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

Where does Dorairayu Thavaseelan practice?

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

What is the NPI number for Dorairayu Thavaseelan?

The National Provider Identifier (NPI) for Dorairayu Thavaseelan is 1962402453, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Michael Spector Anesthesiology Physician · Methuen, MA NPI 1801896121 Dhiren Pathak Anesthesiology Physician · Methuen, MA NPI 1720088321

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