1. Home
  2. Directory
  3. Massachusetts
  4. Boston
  5. Nurse Practitioner
  6. NPI Profile

SIOBHAN ELIZABETH KELLY
NPI 1679349211
Nurse Practitioner in Boston, MA

Active since November 27, 2023PECOS Enrolled
55 FRUIT STREET, BOSTON, MA 02241(617) 726-2000 Get Directions Write a Review

NPPES record last updated: February 25, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Siobhan Elizabeth Kelly NPPES

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

SIOBHAN ELIZABETH KELLY (NPI 1679349211) is an individual nurse practitioner in Boston, Massachusetts, licensed in Massachusetts (RN2340465) and active in the NPI registry since November 2023. She is enrolled in Medicare PECOS and is a graduate of Other (2025).

NPPES Registry Identity

NPI1679349211
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameSIOBHAN ELIZABETH KELLY
Location Address55 FRUIT STREETBoston, MA 02241-9095
Mailing Address128 Bunker Hill StCharlestown, MA 02129-3128
Phone(617) 726-2000
Sole ProprietorYes
Medical School CMSOtherGraduated 2025
Enumeration DateNovember 27, 2023
Last NPPES UpdateFebruary 25, 2026
NPPES CertifiedFebruary 25, 2026
✔ NPI 1679349211 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License✔ Licensed in MA · RN2340465
Definition
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
Also ListedRegistered Nurse · AdministratorTaxonomy 163WA2000X · License RN2340465 (MA)
Also ListedRegistered Nurse · General PracticeTaxonomy 163WG0000X · License RN2340465 (MA)
55 FRUIT STREET, Boston, MA 02241
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Taro Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Siobhan Elizabeth Kelly is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID5991280380
PECOS Enrollment IDI20260402004071
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.

Medicare Billing Reassignments

2

Medicare enrollment records show Siobhan Kelly reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Massachusetts General Physicians Organization Inc
Same address
Dermatology
55 FRUIT ST, BUL 2
Boston, MA 02114
  • Reassigned Medicare billing, Massachusetts enrollment
  • 6,360 clinicians in this Medicare group
NPI 1801874573 (617) 724-0287
The General Hospital Corporation
Same address
General Acute Care Hospital
55 FRUIT ST, BULFINCH 360
Boston, MA 02114
  • Reassigned Medicare billing, Massachusetts enrollment
  • 6,234 clinicians in this Medicare group
NPI 1023049236 (617) 726-2000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02241 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$97.64 typical visit price
range $63.72 – $189.86
Typical copayment $24.41 (range $15.93 – $47.46)
Most-billed visit code 99203
Established Patient
$111.18 typical visit price
range $21.07 – $155.29
Typical copayment $27.79 (range $5.26 – $38.82)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 11

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

MICHAEL HAINES NP
Nurse Practitioner
55 FRUIT STREET
BOSTON, MA 02241
Suffolk County (617) 726-2000
MRS. PATRICIA DULAC
Nurse Practitioner
55 FRUIT STREET
BOSTON, MA 02241
Suffolk County (617) 726-2000
ETHAN MORRIS PA
Physician Assistant (Medical)
55 FRUIT STREET
BOSTON, MA 02241
Suffolk County (617) 726-2000
ALICHIA LOUISE PATON ACNP
Nurse Practitioner
55 FRUIT STREET
BOSTON, MA 02241
Suffolk County (212) 724-6113
JESSICA MIAE BANG-SCHAEFER PA-C
Physician Assistant
55 FRUIT STREET
BOSTON, MA 02241
Suffolk County (617) 724-3874
HEIDI HERCHEN ACNPC-AG
Nurse Practitioner (Acute Care)
55 FRUIT STREET
BOSTON, MA 02241
Suffolk County (617) 726-2000
ALLIE WALPERT CNP
Nurse Practitioner
55 FRUIT STREET
BOSTON, MA 02241
Suffolk County (617) 726-1696
MARIANNE GREENE
Physician Assistant
55 FRUIT STREET
BOSTON, MA 02241
Suffolk County (617) 732-5500

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 Siobhan Kelly's NPI number?

The NPI number for Siobhan Kelly is 1679349211. It was assigned to this individual provider in the NPPES registry on November 27, 2023.

Where is Siobhan Kelly located?

Siobhan Kelly practices at 55 Fruit Street, Boston, MA 02241. The listed phone number is (617) 726-2000.

What is Siobhan Kelly's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Siobhan Kelly enrolled in Medicare?

Yes. Siobhan Kelly is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Siobhan Kelly's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Siobhan Kelly reassigns Medicare benefits to 2 organizations: Massachusetts General Physicians Organization Inc (Boston, MA) and The General Hospital Corporation (Boston, MA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Siobhan Kelly's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Siobhan Kelly accept?

Health plans from Taro Health list Siobhan Kelly 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 Siobhan Kelly was last updated on February 25, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months 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.