Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Siena Catherine Nguyen, MSN, FNP-C, BSN, RN

Individual provider Family Nurse Practitioner · NPI 1447733498

Siena Catherine Nguyen, MSN, FNP-C, BSN, RN is a Nurse Practitioner in Boston, Massachusetts. Qualified in 2018, 8 years ago. Practices with Massachusetts General Physicians Organization Inc, a 3,484-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts.

Years since qualifying
8
Licensed in
MA
In the registry since
2018
What do these letters mean?
MSN — Master of Science in Nursing
A graduate nursing degree, usually held alongside an advanced practice licence.
FNP-C — Family Nurse Practitioner, Certified
A family nurse practitioner certified by the AANP.
BSN — Bachelor of Science in Nursing
A four-year nursing degree.
RN — Registered Nurse
A licensed nurse who completed a nursing degree and passed the NCLEX-RN examination.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

55 Fruit St
Boston, MA 02114-2621
Phone: (617) 726-2000
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 20 Bradston St, Boston, MA 02118-2705 — (617) 635-1000

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence F07181031 (MA)

Record details

NPI number1447733498
Entity typeIndividual (Type 1)
GenderFemale
Credentials MSN , FNP-C , BSN , RN
Sole proprietorNo
NPI enumeratedSeptember 14, 2018
Last updated in NPPESMay 24, 2023
Certification dateMay 24, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2018 (8 years in practice)
Group practice Massachusetts General Physicians Organization Inc — 3484 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients117
Services billed 200 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Also affiliated with 1 inpatient rehabilitation facility, which CMS identifies by certification number only.

Colleagues at Massachusetts General Physicians Organization Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 3484 clinicians in the practice; 12 are shown here.

Other providers in Boston