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

Mary Theresa Brennan, CPNP

Individual provider Registered Nurse · NPI 1336984368

Mary Theresa Brennan, CPNP is a Nurse Practitioner in Boston, Massachusetts. Qualified in 2024, 2 years ago. Practices with Children's Hospital Pediatric Associates, Inc, a 336-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
2
Licensed in
MA
In the registry since
2024
Specialties on file
2
What do these letters mean?
CPNP — Certified Pediatric Nurse Practitioner
A nurse practitioner certified in paediatrics.

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Practice location Address checks out

300 Longwood Ave
Boston, MA 02115-5724
Phone: (617) 355-6000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 51 Blossom St, Boston, MA 02114-2601 — (617) 722-6000

Specialties & licences

Pediatric Nurse Practitioner (primary) Taxonomy 363LP0200X · Licence RN2334511 (MA)
Registered Nurse Taxonomy 163W00000X · Licence RN2334511 (MA)

Record details

NPI number1336984368
Entity typeIndividual (Type 1)
GenderFemale
Credentials CPNP
Sole proprietorNo
NPI enumeratedJuly 1, 2024
Last updated in NPPESMarch 26, 2025
Certification dateMarch 26, 2025

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2024 (2 years in practice)
Group practice Children'S Hospital Pediatric Associates, Inc — 336 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $99 1 payment · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Colleagues at Children's Hospital Pediatric Associates, Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 336 clinicians in the practice; 12 are shown here.

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