Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Theresa J Arpin, MD

Pulmonary Disease Physician in Hopedale, MA · enumerated 2007.

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

National Provider Identifier

1770700288

Verified

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Registry record

Entity type Individual (Type 1)

Name Theresa J Arpin

Credential MD

Sex Female

Practice address Hopedale, MA, 01747

Phone (508) 482-5401

Fax (508) 482-5402

Enumeration date Apr 19, 2007

Last updated in NPPES Jun 11, 2026

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License 235000 (MA) Primary

207RC0200X Critical Care Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 235000 (MA) Secondary

207RS0012X Sleep Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 235000 (MA) Secondary

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
110079737A	Medicaid	MA	-

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 Theresa Arpin?

The National Provider Identifier (NPI) for Theresa Arpin is 1770700288, a Type 1 (individual) record in the CMS NPPES registry.

Where does Theresa Arpin practice?

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

Other providers at this practice address

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Mary Lange Family Nurse Practitioner · Hopedale, MA NPI 1649299561

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-11.