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

Dr. Barbara Lee Day, PSYD, MSW

Clinical Psychologist in Lowell, MA · enumerated 2006.

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

National Provider Identifier

1750478541

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Registry record

Entity type Individual (Type 1)

Name Dr. Barbara Lee Day

Credential PSYD, MSW

Sex Female

Practice address Lowell, MA, 01852

Phone (617) 905-4331

Fax (978) 667-1936

Enumeration date Oct 5, 2006

Last updated in NPPES Jan 19, 2015

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

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 114149 (MA) Secondary

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 9930 (MA) Primary

PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice. About the PSYD credential

Other identifiers

Identifier	Type	State	Issuer
DAY-1234	Other	CT	COMPCARE
P3210140	Other	CT	OXFORD HEALTH PLAN
004254851	Medicaid	CT	-
S300171134	Other	MA	MEDICARE
W07547	Other	MA	BLUE CROSS BLUE SHIELD MA
140005263CT01	Other	CT	ANTHEM BLUE CROSS/BLUE CA
327531	Other	CT	MANAGED HEALTH NETWORK
327531	Other	CT	TRICARE
543829000	Other	CT	MAGELLAN
244178UBS	Other	MA	UNITED BEHAVIORAL HEALTH
244178UBS	Other	CT	UNITED BEHAVIORAL HEALTH
484395	Other	CT	VALUE OPTIONS
327531	Other	MA	MHN/HEALTHNET

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.

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Frequently asked questions

Is NPI 1750478541 active?

Yes, as of the latest NPPES snapshot, NPI 1750478541 is active (record last updated 2015-01-19).

How do I verify Barbara Day's NPI record?

Cross-check NPI 1750478541 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

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Christine Russian Optometrist · Lowell, MA NPI 1720080666 Wayne Fowler Optometrist · Lowell, MA NPI 1184626822 Miguel Verdaguer Psychiatry Physician · Lowell, MA NPI 1710186051 Dora Buote Mental Health Counselor · Lowell, MA NPI 1285923318

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-01-19.