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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

GABRIELLA MULLIN
NPI 1205355989
Social Worker in Boston, MA

Active since September 14, 2017PECOS Enrolled
800 WASHINGTON ST, BOSTON, MA 02111(617) 636-5000 Get Directions Write a Review

NPPES record last updated: October 5, 2026. Verified against the NPPES registry weekly; last sync: October 11, 2026.

Record update history: Oct 5, 2026, Sep 14, 2017 (2 updates tracked since 2017).

About Gabriella Mullin NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GABRIELLA MULLIN (NPI 1205355989) is an individual social worker in Boston, Massachusetts and active in the NPI registry since September 2017. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1205355989
Entity TypeIndividualFemale
Primary Taxonomy104100000X
Provider Legal NameGABRIELLA MULLIN
Location Address800 WASHINGTON STBoston, MA 02111-1552
Mailing Address800 Washington StBoston, MA 02111-1552 · (617) 636-5000
Phone(617) 636-5000
Sole ProprietorNo
Enumeration DateSeptember 14, 2017
Last NPPES UpdateOctober 5, 20262 updates tracked since enumeration
NPPES CertifiedOctober 5, 2026
✔ NPI 1205355989 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial WorkerBehavioral Health & Social Service Providers
Taxonomy Code104100000X
Definition
A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public.
800 WASHINGTON ST, Boston, MA 02111
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Harvard Pilgrim Health Care, Providence Health Plan.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Gabriella Mullin is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

AARON DICKSTEIN M.D.
Internal Medicine (Gastroenterology)
800 WASHINGTON ST, BOX 233
BOSTON, MA 02111
Suffolk County (617) 636-5883
THOMAS E BIGELOW
Technician/Technologist (Optician)
800 WASHINGTON ST, BOX 450
BOSTON, MA 02111
Suffolk County (617) 636-5857
SARAH MERRIMAN PERSING M.D.
Plastic Surgery
800 WASHINGTON ST
BOSTON, MA 02111
Suffolk County (617) 636-5000
DR. SHARANYA MOHANTY M.D.
Internal Medicine
800 WASHINGTON ST
BOSTON, MA 02111
Suffolk County (617) 636-5000
AFRAH SADIQ SAIT MOHAMMED M.D.
Internal Medicine (Infectious Disease)
800 WASHINGTON ST
BOSTON, MA 02111
Suffolk County (718) 629-7204
ADNAN SALIM QAMAR MD
Student in an Organized Health Care Education/Training Program
800 WASHINGTON ST
BOSTON, MA 02111
Suffolk County (617) 636-5829
ALICIA SIGIA WU MD
Psychiatry & Neurology (Psychiatry)
800 WASHINGTON ST
BOSTON, MA 02111
Suffolk County (617) 636-1619
ZEANAARONEVAN ANDRES LUNA
Student in an Organized Health Care Education/Training Program
800 WASHINGTON ST
BOSTON, MA 02111
Suffolk County (617) 636-8100

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gabriella Mullin's NPI number?

The NPI number for Gabriella Mullin is 1205355989. It was assigned to this individual provider in the NPPES registry on September 14, 2017.

Where is Gabriella Mullin located?

Gabriella Mullin practices at 800 Washington St, Boston, MA 02111. The listed phone number is (617) 636-5000.

What is Gabriella Mullin's specialty?

The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.

Is Gabriella Mullin enrolled in Medicare?

Yes. Gabriella Mullin is registered in the Medicare PECOS enrollment system.

What insurance does Gabriella Mullin accept?

Health plans from Harvard Pilgrim Health Care and Providence Health Plan list Gabriella Mullin as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Gabriella Mullin was last updated on October 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.