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

Grace Robertson

Psychiatric/Mental Health Nurse Practitioner in North Chelmsford, MA · enumerated 2021.

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

National Provider Identifier

1861155426

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Registry record

Entity type Individual (Type 1)

Name Grace Robertson

Sex Female

Practice address North Chelmsford, MA, 01863

Phone (603) 600-1033

Fax (978) 428-5811

Enumeration date Oct 20, 2021

Last updated in NPPES Mar 8, 2024

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

Taxonomy & licenses

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License RN2282655 (MA) Primary

Other identifiers

Type	State	Issuer
Other	MA	BLUE CROSS BLUE SHIELD
Other	MA	OPTUM
Other	MA	AETNA
Other	MA	HARVARD PILGRIM
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 Grace Robertson?

The National Provider Identifier (NPI) for Grace Robertson is 1861155426, a Type 1 (individual) record in the CMS NPPES registry.

Where does Grace Robertson practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-03-08.