Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Teresa Weeks Sirois, FNP

Family Nurse Practitioner in Topsham, ME · enumerated 2006 · practices at Maine Center for Cancer Medicine & Blood Disorders, P.A..

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

National Provider Identifier

1396779757

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Teresa Weeks Sirois

Credential FNP

Sex Female

Practice address 105 Topsham Fair Mall Rd Unit 1, Topsham, ME, 04086

Phone (207) 303-3300

Fax (207) 250-2137

Enumeration date Jul 10, 2006

Last updated in NPPES Apr 21, 2026

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License CNP81326 (ME) Primary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License CNP81326 (ME) Secondary

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 044600 (ME) Secondary

FNP · Family Nurse Practitioner: A nurse practitioner certified in family practice across the lifespan. About the FNP credential

Other identifiers

Identifier	Type	State	Issuer
010453642	Other	ME	MEDNET
268010099	Medicaid	ME	-

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

Is NPI 1396779757 active?

Yes, as of the latest NPPES snapshot, NPI 1396779757 is active (record last updated 2026-04-21).

How do I verify Teresa Sirois's NPI record?

Cross-check NPI 1396779757 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Danielle Bowen Nurse Practitioner · Topsham, ME NPI 1063485035 Brian Haney Hematology & Oncology Physician · Topsham, ME NPI 1285830554 David Benton Hematology & Oncology Physician · Topsham, ME NPI 1336346501 Julia Moukharskaya Hematology & Oncology Physician · Topsham, ME NPI 1730341702 Nastasha Stitham Nurse Practitioner · Topsham, ME NPI 1982986972 Danielle Vanstrien Physician Assistant · Topsham, ME NPI 1679901540 Maine Center for Cancer Medicine & Blood Disorders, P.A. Durable Medical Equipment & Medical Supplies · Topsham, ME NPI 1578003547 Jennifer Dimond Clinical Social Worker · Topsham, ME NPI 1366049454

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-04-21.