Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

MS. Addie F Day, RN, ANP-C

Individual provider Registered Nurse · NPI 1104251602

MS. Addie F Day, RN, ANP-C is a Nurse Practitioner in Cambridge, Massachusetts. Qualified in 2013, 13 years ago. Practices with Mount Auburn Professional Services Inc, a 228-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts and New Hampshire.

Years since qualifying
13
Licensed in
MA, NH
In the registry since
2013
Specialties on file
5
What do these letters mean?
RN — Registered Nurse
A licensed nurse who completed a nursing degree and passed the NCLEX-RN examination.

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Practice location Address checks out

625 Mount Auburn St Ste 101A
Cambridge, MA 02138-4518
Phone: (617) 492-4545
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Adult Health Nurse Practitioner (primary) Taxonomy 363LA2200X · Licence RN2277693 (MA)
Registered Nurse Taxonomy 163W00000X · Licence RN2277693 (MA)
Primary Care Nurse Practitioner Taxonomy 363LP2300X · Licence RN2277693 (MA)
Registered Nurse Taxonomy 163W00000X · Licence 068485-21 (NH)
Nurse Practitioner Taxonomy 363L00000X · Licence RN2277693 (MA)

Record details

NPI number1104251602
Entity typeIndividual (Type 1)
GenderFemale
Credentials RN , ANP-C
Sole proprietorNo
NPI enumeratedSeptember 4, 2013
Last updated in NPPESMarch 7, 2025
Certification dateMarch 7, 2025

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2013 (13 years in practice)
Group practice Mount Auburn Professional Services Inc — 228 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 patients201
Services billed 410 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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.

  • Mount Auburn Hospital Hospital · Cambridge, MA
  • Beth Israel Deaconess Hospital - Needham Hospital · Needham, MA

Colleagues at Mount Auburn Professional Services Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 228 clinicians in the practice; 12 are shown here.

Other providers in Cambridge